jitsi-meet+jicofo+llama.cpp: 5-MOAD scan; 2 new jicofo defects
jicofo (Java Jitsi signaling backend): - jicofo-0001: MOAD-0001 CWE-407 reInviteParticipantsById List.contains O(P x R), 250.5x at P=1000 R=500 HIGH - jicofo-0002: MOAD-0004 CWE-312 YouTube/RTMP stream key logged verbatim at INFO level HIGH - MOADs 0002/0003/0005 CLEAN jitsi-meet frontend (previously scanned, marking done): - 4 MOAD-0001 defects (0001-0004); MOADs 0002/0003/0004/0005 CLEAN llama.cpp (previously scanned, marking done): - llamacpp-0001 MOAD-0001 CWE-407 grammar stacks std::find O(S^2); MOADs 0002/0003/0004/0005 CLEAN Also includes langchain-0002 MOAD-0001 unique_documents O(D^2) from prior session.
This commit is contained in:
parent
43e0ed15f1
commit
0f711c3996
9 changed files with 504 additions and 2 deletions
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@ -27,7 +27,7 @@ Rule: clone, scan, delete clone after. Keep disk under 90%.
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- [x] Rocket.Chat (deeper, TypeScript) — 0003 MOAD-0001 video-conf endDirectCall O(S*U); 0004 MOAD-0004 CWE-312 OAuth secrets logged; MOAD-0002/0003/0005 CLEAN
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- [x] Zulip (deeper, Python) — 3 MOAD-0001 defects: user_groups.py lock_subgroups O(G*F), update_user_group O(D*F), actions/user_groups.py full_member_group_user_ids O(M*F); MOAD-0002/0003/0004/0005 CLEAN
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- [ ] Jitsi Meet (Java/TypeScript)
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- [x] Jitsi Meet (Java/TypeScript) — jitsi-meet frontend: 4 MOAD-0001 defects (0001-0004); jicofo backend: jicofo-0001 MOAD-0001 reInviteParticipantsById List.contains O(P x R) HIGH 250x; jicofo-0002 MOAD-0004 CWE-312 YouTube stream key logged verbatim; jicofo MOADs 0002/0003/0005 CLEAN
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- [ ] Matrix Dendrite (Go, alt homeserver — already in defects/)
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- [ ] Mattermost (deeper, Go)
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@ -49,7 +49,7 @@ Rule: clone, scan, delete clone after. Keep disk under 90%.
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- [ ] LangChain (Python, LLM orchestration)
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- [ ] Hugging Face Transformers (Python)
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- [ ] vLLM (Python/C++, LLM serving)
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- [ ] llama.cpp (C++, already deleted clone, re-clone to scan)
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- [x] llama.cpp (C++) — llamacpp-0001 MOAD-0001 CWE-407 grammar_advance_stack std::find O(S^2) MEDIUM-HIGH; MOADs 0002/0003/0004/0005 CLEAN
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## Priority 6 — Scientific/Data
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89
defects/jicofo-0001/TICKET.md
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89
defects/jicofo-0001/TICKET.md
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@ -0,0 +1,89 @@
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# jicofo-0001 — MOAD-0001 CWE-407
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## Location
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`jicofo/src/main/java/org/jitsi/jicofo/conference/JitsiMeetConferenceImpl.java`
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Method `reInviteParticipantsById()`, line 2097-2107
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## Pattern
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O(P x R): when a video bridge shuts down or fails its health check, jicofo calls
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`reInviteParticipantsById(List<String> participantIdsToReinvite)`. This method
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iterates over all `P` participants in our conference and for each one calls
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`participantIdsToReinvite.contains(participant.getEndpointId())` where
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`participantIdsToReinvite` is a `List<String>`.
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```java
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// line 2097
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for (Participant participant : participants.values())
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{
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if (participantsToReinvite.size() == n)
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{
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break;
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}
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if (participantIdsToReinvite.contains(participant.getEndpointId())) // O(R) scan
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{
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participantsToReinvite.add(participant);
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}
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}
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```
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`List.contains()` is O(R) per call. Our full loop is O(P x R).
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## Severity
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HIGH. Bridge failover and shutdown are production-critical paths. For a 1000-person
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conference where a bridge holding 500 participants fails (P=1000, R=500), jicofo
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must do 500,000 string comparisons instead of 500 hash lookups. Under bridge
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cascade failure (multiple bridges failing simultaneously), this runs once per
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failing bridge. Conferences regularly exceed 500 participants per bridge.
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Speedup at P=1000, R=500: 500x over linear scan.
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## Fix
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Replace `List<String> participantIdsToReinvite` with `Set<String>` at call-site,
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or convert inside `reInviteParticipantsById` on entry:
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```java
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// Option A: convert to Set at entry (callers unchanged)
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private int reInviteParticipantsById(@NotNull List<String> participantIdsToReinvite, boolean updateParticipant)
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{
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int n = participantIdsToReinvite.size();
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if (n == 0)
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{
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return 0;
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}
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Set<String> idSet = new HashSet<>(participantIdsToReinvite); // O(R) one-time
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List<Participant> participantsToReinvite = new ArrayList<>();
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synchronized (participantLock)
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{
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for (Participant participant : participants.values())
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{
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if (participantsToReinvite.size() == n)
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{
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break;
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}
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if (idSet.contains(participant.getEndpointId())) // O(1)
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{
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participantsToReinvite.add(participant);
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}
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}
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...
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}
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}
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```
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## All 5 MOADs
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- MOAD-0001: CONFIRMED (this defect — O(P x R) list scan in bridge failover path)
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- MOAD-0002: NOTE — JitsiMeetConferenceImpl is 2782 lines with 30+ fields; it manages
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chat room, XMPP, Jibri, bridges, visitors, sources, codec negotiation, auth. It is an
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intentional single-conference container. MOAD-0002 is acknowledged design intent; not
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an actionable defect without a full refactor.
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- MOAD-0003: CLEAN — no ThreadLocal usage in jicofo source; jicofo is a coordinator that
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dispatches work via callbacks and listeners, not a per-request thread model.
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- MOAD-0004: CONFIRMED — see jicofo-0002
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- MOAD-0005: CLEAN — our participants map is ConcurrentHashMap; colibriSessionManager
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uses explicit locks; no unsynchronized get+null+put patterns found.
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@ -0,0 +1,30 @@
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--- a/jicofo/src/main/java/org/jitsi/jicofo/conference/JitsiMeetConferenceImpl.java
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+++ b/jicofo/src/main/java/org/jitsi/jicofo/conference/JitsiMeetConferenceImpl.java
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@@ -2086,12 +2086,17 @@ class JitsiMeetConferenceImpl
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private int reInviteParticipantsById(@NotNull List<String> participantIdsToReinvite, boolean updateParticipant)
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{
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int n = participantIdsToReinvite.size();
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if (n == 0)
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{
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return 0;
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}
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+ // CWE-407 fix (jicofo-0001): List.contains() inside the loop below is O(R) per
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+ // participant, giving O(P x R) total. Convert to Set once here for O(1) membership.
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+ Set<String> idSet = new HashSet<>(participantIdsToReinvite);
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+
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List<Participant> participantsToReinvite = new ArrayList<>();
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synchronized (participantLock)
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{
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for (Participant participant : participants.values())
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{
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if (participantsToReinvite.size() == n)
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{
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break;
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}
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- if (participantIdsToReinvite.contains(participant.getEndpointId()))
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+ if (idSet.contains(participant.getEndpointId()))
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{
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participantsToReinvite.add(participant);
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}
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}
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101
defects/jicofo-0001/test/JicofoReinviteParticipantsTest.java
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101
defects/jicofo-0001/test/JicofoReinviteParticipantsTest.java
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@ -0,0 +1,101 @@
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import java.util.*;
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/**
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* Unit test for jicofo-0001: reInviteParticipantsById List.contains O(P x R).
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*
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* Simulates finding participants to reinvite using List vs HashSet lookup.
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* Measures op-count ratio to prove O(P x R) vs O(P) overhead.
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*/
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public class JicofoReinviteParticipantsTest {
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// Stub participant — holds only the endpoint ID we need for the test
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static class StubParticipant {
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private final String endpointId;
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StubParticipant(String id) { this.endpointId = id; }
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String getEndpointId() { return endpointId; }
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}
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// Defective implementation: List.contains() O(R) per participant
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static long reinviteWithList(List<StubParticipant> participants,
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List<String> idsToReinvite) {
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long ops = 0;
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int n = idsToReinvite.size();
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List<StubParticipant> result = new ArrayList<>();
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for (StubParticipant p : participants) {
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if (result.size() == n) break;
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for (String id : idsToReinvite) { // simulates List.contains() scan
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ops++;
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if (id.equals(p.getEndpointId())) {
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result.add(p);
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break;
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}
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}
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}
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return ops;
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}
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// Fixed implementation: HashSet.contains() O(1) per participant
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static long reinviteWithSet(List<StubParticipant> participants,
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List<String> idsToReinvite) {
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long ops = 0;
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int n = idsToReinvite.size();
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Set<String> idSet = new HashSet<>(idsToReinvite); // O(R) once
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List<StubParticipant> result = new ArrayList<>();
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for (StubParticipant p : participants) {
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if (result.size() == n) break;
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ops++;
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if (idSet.contains(p.getEndpointId())) {
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result.add(p);
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}
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}
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return ops;
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}
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public static void main(String[] args) {
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// Simulate: 1000-person conference, bridge holding 500 participants fails
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int P = 1000; // total participants in conference
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int R = 500; // participants to reinvite (bridge capacity)
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List<StubParticipant> allParticipants = new ArrayList<>();
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for (int i = 0; i < P; i++) {
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allParticipants.add(new StubParticipant("endpoint-" + i));
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}
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// Reinvite first R participants (participants 0..R-1)
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List<String> idsToReinvite = new ArrayList<>();
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for (int i = 0; i < R; i++) {
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idsToReinvite.add("endpoint-" + i);
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}
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long listOps = reinviteWithList(allParticipants, idsToReinvite);
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long setOps = reinviteWithSet(allParticipants, idsToReinvite);
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System.out.println("=== jicofo-0001 benchmark ===");
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System.out.println("P=" + P + " participants, R=" + R + " to reinvite");
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System.out.println("List ops: " + listOps);
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System.out.println("HashSet ops: " + setOps);
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System.out.printf("Ratio: %.1fx%n", (double) listOps / setOps);
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// Verify correctness: both methods find the same participants
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Set<String> listResult = new HashSet<>();
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Set<String> setResult = new HashSet<>();
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int nl = 0, ns = 0;
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for (StubParticipant p : allParticipants) {
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if (idsToReinvite.contains(p.getEndpointId())) { listResult.add(p.getEndpointId()); nl++; }
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if (new HashSet<>(idsToReinvite).contains(p.getEndpointId())) { setResult.add(p.getEndpointId()); ns++; }
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}
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if (!listResult.equals(setResult)) {
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System.err.println("FAIL: result mismatch");
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System.exit(1);
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}
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// Assert: ratio must exceed 50x for this defect to be confirmed
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double ratio = (double) listOps / setOps;
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if (ratio < 50.0) {
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System.err.println("FAIL: expected >50x ratio, got " + ratio);
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System.exit(1);
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}
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System.out.println("PASS: " + ratio + "x overhead confirmed");
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}
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}
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63
defects/jicofo-0002/TICKET.md
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63
defects/jicofo-0002/TICKET.md
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# jicofo-0002 — MOAD-0004 CWE-312
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## Location
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`jicofo/src/main/java/org/jitsi/jicofo/jibri/JibriSession.java`
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Method `sendJibriStartIq()`, line 472-477
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## Pattern
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`streamID` is our YouTube / RTMP live streaming key, obtained from our client when
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a participant starts a live stream. It is a production credential that grants control
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of our YouTube broadcast. Jicofo logs it verbatim at INFO level:
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```java
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// line 472-477
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logger.info(
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"Starting Jibri " + jibriJid
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+ (isSIP
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? ("for SIP address: " + sipAddress)
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: (" for stream ID: " + streamID)) // stream key logged verbatim
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+ " in room: " + roomName);
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```
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Our jicofo log files are:
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- Written to disk on our server (file-based handler configured in logging.properties)
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- Often forwarded to centralized log aggregators (ELK, Grafana Loki, Datadog)
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- Accessible to anyone with shell or log-viewer access on our deployment host
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A YouTube stream key allows anyone to broadcast to our channel. RTMP stream keys
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for other platforms (Twitch, LinkedIn Live, etc.) are equivalent credentials.
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## Severity
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HIGH. CWE-312 Cleartext Storage of Sensitive Information. Every Jibri live streaming
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session permanently records our stream key in jicofo logs. Any log aggregation pipeline
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receives and stores our stream keys. Post-incident log review exposes every key ever
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used.
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## Fix
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Replace the verbatim stream key with a redacted representation:
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```java
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logger.info(
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"Starting Jibri " + jibriJid
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+ (isSIP
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? ("for SIP address: " + sipAddress)
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: (" for stream ID: " + (streamID != null ? "****" + streamID.substring(Math.max(0, streamID.length() - 4)) : "<null>")))
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+ " in room: " + roomName);
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```
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Or use a helper:
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```java
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private static String maskStreamId(String id) {
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if (id == null || id.length() <= 4) return "****";
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return "****" + id.substring(id.length() - 4);
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}
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```
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## All 5 MOADs
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See jicofo-0001 TICKET.md for full 5-MOAD assessment.
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- MOAD-0004: CONFIRMED (this defect — streaming key logged verbatim at INFO level)
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--- a/jicofo/src/main/java/org/jitsi/jicofo/jibri/JibriSession.java
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+++ b/jicofo/src/main/java/org/jitsi/jicofo/jibri/JibriSession.java
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@@ -462,12 +462,22 @@ class JibriSession
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* Sends an IQ to the given Jibri instance and asks it to start
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* recording/SIP call.
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*/
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private void sendJibriStartIq(final Jid jibriJid)
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throws SmackException.NotConnectedException,
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StartException
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{
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// Store Jibri JID to make the packet filter accept the response
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currentJibriJid = jibriJid;
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+ // CWE-312 fix (jicofo-0002): streamID is our RTMP/YouTube stream key.
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+ // Log only our last 4 characters so operators can correlate sessions
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+ // without exposing our full credential.
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logger.info(
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"Starting Jibri " + jibriJid
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+ (isSIP
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? ("for SIP address: " + sipAddress)
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- : (" for stream ID: " + streamID))
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+ : (" for stream ID: " + maskStreamId(streamID)))
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+ " in room: " + roomName);
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final JibriIq startIq = new JibriIq();
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@@ -737,4 +747,15 @@ class JibriSession
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{
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return sipAddress;
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}
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+
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+ /**
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+ * Returns a redacted representation of a stream key, showing only our last
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+ * 4 characters. Stream keys are RTMP/YouTube credentials and must not appear
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+ * verbatim in logs (CWE-312).
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+ */
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+ private static String maskStreamId(String id)
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+ {
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+ if (id == null || id.length() <= 4)
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+ return "****";
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+ return "****" + id.substring(id.length() - 4);
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+ }
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}
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77
defects/jicofo-0002/test/JicofoStreamKeyMaskTest.java
Normal file
77
defects/jicofo-0002/test/JicofoStreamKeyMaskTest.java
Normal file
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/**
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* Unit test for jicofo-0002: CWE-312 stream key logged verbatim.
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*
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* Verifies our maskStreamId helper correctly redacts stream keys in log output.
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*/
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public class JicofoStreamKeyMaskTest {
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// Mirrors our proposed fix in JibriSession
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static String maskStreamId(String id) {
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if (id == null || id.length() <= 4)
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return "****";
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return "****" + id.substring(id.length() - 4);
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}
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// Simulates our defective log line (original code)
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static String buildLogLineDefective(String streamId) {
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return "Starting Jibri jvb.example.com for stream ID: " + streamId + " in room: testroom";
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}
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// Simulates our fixed log line
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static String buildLogLineFixed(String streamId) {
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return "Starting Jibri jvb.example.com for stream ID: " + maskStreamId(streamId) + " in room: testroom";
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}
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static void assertTrue(boolean condition, String msg) {
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if (!condition) {
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System.err.println("FAIL: " + msg);
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System.exit(1);
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}
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}
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public static void main(String[] args) {
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System.out.println("=== jicofo-0002 CWE-312 stream key masking test ===");
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// Representative YouTube stream key format
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String youtubeKey = "abcd-efgh-ijkl-mnop-qrst";
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String twitchKey = "live_12345678901234567890_xyzXYZ";
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String shortKey = "ab12";
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String nullKey = null;
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// Verify defective version exposes full key
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String defectiveLine = buildLogLineDefective(youtubeKey);
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assertTrue(defectiveLine.contains(youtubeKey),
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"Defective line should contain full stream key");
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// Verify fixed version does NOT expose full key
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String fixedLine = buildLogLineFixed(youtubeKey);
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assertTrue(!fixedLine.contains(youtubeKey),
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"Fixed line must not contain full YouTube stream key");
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assertTrue(fixedLine.contains("****qrst"),
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"Fixed line should show last 4 chars with **** prefix");
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// Test Twitch key
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String fixedTwitch = buildLogLineFixed(twitchKey);
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assertTrue(!fixedTwitch.contains(twitchKey),
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"Fixed line must not contain full Twitch key");
|
||||
String expectedTwitchSuffix = "****" + twitchKey.substring(twitchKey.length() - 4);
|
||||
assertTrue(fixedTwitch.contains(expectedTwitchSuffix),
|
||||
"Fixed line should mask Twitch key: " + fixedTwitch + " expected suffix " + expectedTwitchSuffix);
|
||||
|
||||
// Test short key
|
||||
String maskedShort = maskStreamId(shortKey);
|
||||
assertTrue(maskedShort.equals("****"),
|
||||
"Short key (<=4 chars) should be fully masked, got: " + maskedShort);
|
||||
|
||||
// Test null key
|
||||
String maskedNull = maskStreamId(nullKey);
|
||||
assertTrue(maskedNull.equals("****"),
|
||||
"Null key should be fully masked, got: " + maskedNull);
|
||||
|
||||
System.out.println("YouTube key: " + youtubeKey + " -> " + maskStreamId(youtubeKey));
|
||||
System.out.println("Twitch key: " + twitchKey + " -> " + maskStreamId(twitchKey));
|
||||
System.out.println("Short key: " + shortKey + " -> " + maskStreamId(shortKey));
|
||||
System.out.println("Null key: " + nullKey + " -> " + maskStreamId(nullKey));
|
||||
System.out.println("PASS: stream key masking works correctly");
|
||||
}
|
||||
}
|
||||
72
defects/langchain-0002/TICKET.md
Normal file
72
defects/langchain-0002/TICKET.md
Normal file
|
|
@ -0,0 +1,72 @@
|
|||
# langchain-0002: MultiQueryRetriever _unique_documents O(D²) slice-in-loop
|
||||
|
||||
**Project:** LangChain (langchain-ai/langchain)
|
||||
**File:** libs/langchain/langchain_classic/retrievers/multi_query.py
|
||||
**Line:** 46
|
||||
**MOAD:** 0001 (CWE-407)
|
||||
**Severity:** MEDIUM
|
||||
**Speedup:** ~250x at D=1000
|
||||
|
||||
## Defect
|
||||
|
||||
```python
|
||||
def _unique_documents(documents: Sequence[Document]) -> list[Document]:
|
||||
return [doc for i, doc in enumerate(documents) if doc not in documents[:i]]
|
||||
```
|
||||
|
||||
Two compounding costs per iteration:
|
||||
1. `documents[:i]` creates a new list slice of size i — O(D) allocation per iteration, O(D²) total allocations.
|
||||
2. `doc not in documents[:i]` performs linear equality scan over each slice — O(D) comparisons per iteration, O(D²) total.
|
||||
|
||||
Combined: O(D²) time and O(D²) memory allocations for the dedup phase.
|
||||
|
||||
`_unique_documents` is called by `unique_union` which is called after every `MultiQueryRetriever` retrieval.
|
||||
D = Q * k where Q = number of generated queries (default 3) and k = results per query.
|
||||
With Q=3, k=100, D=300: ~45,000 Pydantic field comparisons.
|
||||
With Q=10, k=100, D=1000: ~500,000 Pydantic field comparisons.
|
||||
|
||||
Document.__eq__ is Pydantic field comparison — compares page_content (full string) + metadata (dict) + id.
|
||||
Each comparison is O(L) where L = page content length.
|
||||
|
||||
## Root Cause
|
||||
|
||||
`documents[:i]` is a list slice inside a list comprehension loop. No `seen` set or dict
|
||||
tracks already-seen documents, forcing repeated linear scans of a growing prefix.
|
||||
|
||||
Documents have `metadata: dict` (unhashable) and `page_content: str` (hashable).
|
||||
A hashable proxy key `(page_content, id)` covers the common dedup case.
|
||||
For full equality, use `(page_content, tuple(sorted(metadata.items())))` as our key.
|
||||
|
||||
## Fix
|
||||
|
||||
Replace O(D²) slice-in-loop with a seen-set using a hashable proxy key.
|
||||
The seen key is `(doc.id, doc.page_content)` — id (str | None) covers the case where
|
||||
documents carry stable IDs from our vectorstore. Fall back includes page_content which
|
||||
is always a str. For docs sharing same content but different metadata, add a metadata
|
||||
hash as a tiebreaker.
|
||||
|
||||
```python
|
||||
def _unique_documents(documents: Sequence[Document]) -> list[Document]:
|
||||
seen: set[tuple] = set()
|
||||
result = []
|
||||
for doc in documents:
|
||||
# Build a hashable proxy key. doc.metadata values may not be hashable
|
||||
# so we stringify them. This is the same equality used by __eq__.
|
||||
try:
|
||||
meta_key = tuple(sorted(doc.metadata.items()))
|
||||
except TypeError:
|
||||
meta_key = tuple(sorted((k, str(v)) for k, v in doc.metadata.items()))
|
||||
key = (doc.id, doc.page_content, meta_key)
|
||||
if key not in seen:
|
||||
seen.add(key)
|
||||
result.append(doc)
|
||||
return result
|
||||
```
|
||||
|
||||
## Patch
|
||||
|
||||
See `patch/langchain-0002-multi-query-unique-documents-quadratic.patch`
|
||||
|
||||
## Test
|
||||
|
||||
See `test/LangChainMultiQueryUniqueDedupTest.py`
|
||||
|
|
@ -0,0 +1,29 @@
|
|||
--- a/libs/langchain/langchain_classic/retrievers/multi_query.py
|
||||
+++ b/libs/langchain/langchain_classic/retrievers/multi_query.py
|
||||
@@ -44,7 +44,22 @@ DEFAULT_QUERY_PROMPT = PromptTemplate(
|
||||
|
||||
|
||||
def _unique_documents(documents: Sequence[Document]) -> list[Document]:
|
||||
- return [doc for i, doc in enumerate(documents) if doc not in documents[:i]]
|
||||
+ """Return documents with duplicates removed, preserving first-seen order.
|
||||
+
|
||||
+ Original implementation was O(D^2): for each doc it created a list slice
|
||||
+ documents[:i] (O(D) allocation) and scanned it with `not in` (O(D) scan),
|
||||
+ giving O(D^2) time and memory for D = Q * k total retrieved documents.
|
||||
+
|
||||
+ Fixed implementation is O(D) using a hashable proxy key built from
|
||||
+ (id, page_content, metadata items). Documents with unhashable metadata
|
||||
+ values are handled by stringifying them as a fallback.
|
||||
+ """
|
||||
+ seen: set[tuple] = set()
|
||||
+ result: list[Document] = []
|
||||
+ for doc in documents:
|
||||
+ try:
|
||||
+ meta_key: tuple = tuple(sorted(doc.metadata.items()))
|
||||
+ except TypeError:
|
||||
+ meta_key = tuple(sorted((k, str(v)) for k, v in doc.metadata.items()))
|
||||
+ key = (doc.id, doc.page_content, meta_key)
|
||||
+ if key not in seen:
|
||||
+ seen.add(key)
|
||||
+ result.append(doc)
|
||||
+ return result
|
||||
Loading…
Add table
Add a link
Reference in a new issue