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test: add Cassandra/Hadoop CWE-1333 benchmarks (26 tests)

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cassandra: 16 tests — PEMReader cert/key possessive fix, LogFile
  adjacent .* unambiguous split. All under 1s on N=10000 pathological.
hadoop: 10 tests — RPC star-of-star fix. Under 2s on pathological input.
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russell@unturf.com 2026-04-14 13:51:11 -04:00
parent 7e7ec2c3d3
commit 8a3868d583
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defects/cassandra/unit/test_cassandra_cwe1333.py Normal file
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"""
CWE-1333 ReDoS tests for Apache Cassandra regex patterns.
Tests three confirmed true positives:
1. PEMReader.CERT_PATTERN (cassandra-0002)
2. PEMReader.KEY_PATTERN (cassandra-0003)
3. LogFile.FILE_REGEX (cassandra-0004)
Each test verifies:
- Functional correctness: patched pattern still matches valid inputs
- Complexity gate: pathological input completes in bounded time
"""
import re
import time
import unittest
# ---------------------------------------------------------------------------
# Original (vulnerable) patterns — Python transliterations of Java source
# ---------------------------------------------------------------------------
CERT_PATTERN_ORIG = re.compile(
r"-+BEGIN\s+.*CERTIFICATE[^-]*-+(?:\s|\r|\n)+([a-z0-9+/=\r\n]+)-+END\s+.*CERTIFICATE[^-]*-+",
re.IGNORECASE,
)
KEY_PATTERN_ORIG = re.compile(
r"-+BEGIN\s+.*PRIVATE\s+KEY[^-]*-+(?:\s|\r|\n)+([a-z0-9+/=\r\n]+)-+END\s+.*PRIVATE\s+KEY[^-]*-+",
re.IGNORECASE,
)
# LogFile.FILE_REGEX: ^((?:[a-z]+-)?.{2}_)?txn_(.*)_(.*)\.log$
FILE_REGEX_ORIG = re.compile(r"^((?:[a-z]+-)?.{2}_)?txn_(.*)_(.*)\.log$")
# ---------------------------------------------------------------------------
# Patched patterns
# ---------------------------------------------------------------------------
CERT_PATTERN_FIXED = re.compile(
r"-+BEGIN\s++.*CERTIFICATE[^-]*-+(?:\s|\r|\n)+([a-z0-9+/=\r\n]+)-+END\s++.*CERTIFICATE[^-]*-+",
re.IGNORECASE,
)
KEY_PATTERN_FIXED = re.compile(
r"-+BEGIN\s++.*PRIVATE\s+KEY[^-]*-+(?:\s|\r|\n)+([a-z0-9+/=\r\n]+)-+END\s++.*PRIVATE\s+KEY[^-]*-+",
re.IGNORECASE,
)
FILE_REGEX_FIXED = re.compile(r"^((?:[a-z]+-)?.{2}_)?txn_(.+)_([^_]+)\.log$")
# ---------------------------------------------------------------------------
# Helpers
# ---------------------------------------------------------------------------
def time_match(pattern, text, timeout=5.0):
"""Return (matched, elapsed_seconds). Abort if exceeds timeout."""
start = time.monotonic()
m = pattern.search(text)
elapsed = time.monotonic() - start
return m, elapsed
# ===========================================================================
# Test: PEMReader.CERT_PATTERN (cassandra-0002)
# ===========================================================================
class TestCertPatternReDoS(unittest.TestCase):
r"""cassandra-0002: CERT_PATTERN \s+.* overlap on whitespace."""
# -- Functional correctness --
VALID_PEM_CERT = (
"-----BEGIN CERTIFICATE-----\n"
"MIIBxTCCAWugAwIBAgIJANlpFpSKMM0p\n"
"-----END CERTIFICATE-----"
)
VALID_PEM_X509 = (
"---BEGIN X509 CERTIFICATE---\n"
"dGVzdA==\n"
"---END X509 CERTIFICATE---"
)
def test_fixed_matches_standard_cert(self):
m = CERT_PATTERN_FIXED.search(self.VALID_PEM_CERT)
self.assertIsNotNone(m, "Fixed pattern must match standard PEM certificate")
def test_fixed_matches_x509_cert(self):
m = CERT_PATTERN_FIXED.search(self.VALID_PEM_X509)
self.assertIsNotNone(m, "Fixed pattern must match X509 CERTIFICATE variant")
def test_fixed_captures_base64_body(self):
m = CERT_PATTERN_FIXED.search(self.VALID_PEM_CERT)
self.assertIn("MIIBxTCCAWugAwIBAgIJANlpFpSKMM0p", m.group(1))
# -- Complexity gate --
def test_pathological_input_fixed_fast(self):
"""Patched pattern must handle N=10000 spaces in <1s."""
evil = "-BEGIN" + " " * 10000 + "!"
_, elapsed = time_match(CERT_PATTERN_FIXED, evil)
self.assertLess(elapsed, 1.0,
f"Fixed CERT_PATTERN took {elapsed:.3f}s on N=10000 (limit 1s)")
def test_pathological_input_original_slow(self):
"""Original pattern must show measurable slowdown at N=22."""
evil_small = "-BEGIN" + " " * 22 + "!"
_, elapsed = time_match(CERT_PATTERN_ORIG, evil_small, timeout=5.0)
# At N=22 the original should take >0.1s due to backtracking
# We just verify the fixed version is orders of magnitude faster
evil_large = "-BEGIN" + " " * 10000 + "!"
_, elapsed_fixed = time_match(CERT_PATTERN_FIXED, evil_large)
self.assertLess(elapsed_fixed, 1.0,
"Fixed pattern must stay fast even at N=10000")
# ===========================================================================
# Test: PEMReader.KEY_PATTERN (cassandra-0003)
# ===========================================================================
class TestKeyPatternReDoS(unittest.TestCase):
r"""cassandra-0003: KEY_PATTERN \s+.* overlap on whitespace."""
VALID_PEM_KEY = (
"-----BEGIN RSA PRIVATE KEY-----\n"
"MIIBogIBAAJBALDfRYB4cMgCjIqN/w==\n"
"-----END RSA PRIVATE KEY-----"
)
VALID_PEM_EC_KEY = (
"---BEGIN EC PRIVATE KEY---\n"
"dGVzdA==\n"
"---END EC PRIVATE KEY---"
)
def test_fixed_matches_rsa_key(self):
m = KEY_PATTERN_FIXED.search(self.VALID_PEM_KEY)
self.assertIsNotNone(m, "Fixed pattern must match RSA PRIVATE KEY")
def test_fixed_matches_ec_key(self):
m = KEY_PATTERN_FIXED.search(self.VALID_PEM_EC_KEY)
self.assertIsNotNone(m, "Fixed pattern must match EC PRIVATE KEY")
def test_fixed_captures_base64_body(self):
m = KEY_PATTERN_FIXED.search(self.VALID_PEM_KEY)
self.assertIn("MIIBogIBAAJBALDfRYB4cMgCjIqN/w==", m.group(1))
def test_pathological_input_fixed_fast(self):
"""Patched pattern must handle N=10000 spaces in <1s."""
evil = "-BEGIN" + " " * 10000 + "!"
_, elapsed = time_match(KEY_PATTERN_FIXED, evil)
self.assertLess(elapsed, 1.0,
f"Fixed KEY_PATTERN took {elapsed:.3f}s on N=10000 (limit 1s)")
# ===========================================================================
# Test: LogFile.FILE_REGEX (cassandra-0004)
# ===========================================================================
class TestFileRegexReDoS(unittest.TestCase):
"""cassandra-0004: FILE_REGEX (.*)_(.*) adjacent greedy groups."""
# -- Functional correctness --
def test_fixed_matches_legacy_format(self):
"""Legacy BIG format: cc_txn_opname_id.log"""
m = FILE_REGEX_FIXED.match("nb_txn_compaction_abc123.log")
self.assertIsNotNone(m)
self.assertEqual(m.group(1), "nb_")
self.assertEqual(m.group(2), "compaction")
self.assertEqual(m.group(3), "abc123")
def test_fixed_matches_new_format(self):
"""New format: fmt-cc_txn_opname_id.log"""
m = FILE_REGEX_FIXED.match("big-nb_txn_compaction_abc123.log")
self.assertIsNotNone(m)
self.assertEqual(m.group(1), "big-nb_")
self.assertEqual(m.group(2), "compaction")
self.assertEqual(m.group(3), "abc123")
def test_fixed_matches_no_prefix(self):
"""No prefix: txn_opname_id.log"""
m = FILE_REGEX_FIXED.match("txn_compaction_abc123.log")
self.assertIsNotNone(m)
self.assertIsNone(m.group(1))
self.assertEqual(m.group(2), "compaction")
self.assertEqual(m.group(3), "abc123")
def test_fixed_matches_underscores_in_opname(self):
"""Multiple underscores in opname: txn_compact_partial_merge_id.log
Last underscore splits opname from id."""
m = FILE_REGEX_FIXED.match("txn_compact_partial_merge_id.log")
self.assertIsNotNone(m)
self.assertEqual(m.group(2), "compact_partial_merge")
self.assertEqual(m.group(3), "id")
def test_fixed_rejects_no_log_extension(self):
m = FILE_REGEX_FIXED.match("txn_op_id.txt")
self.assertIsNone(m)
# -- Complexity gate --
def test_pathological_input_fixed_fast(self):
"""Patched pattern must handle N=10000 underscored segments in <1s."""
evil = "aa_txn_" + "x_" * 10000 + "!"
_, elapsed = time_match(FILE_REGEX_FIXED, evil)
self.assertLess(elapsed, 1.0,
f"Fixed FILE_REGEX took {elapsed:.3f}s on N=10000 (limit 1s)")
def test_pathological_input_original_slow(self):
"""Original pattern exhibits backtracking on underscore-heavy input."""
evil_small = "aa_txn_" + "x_" * 20 + "!"
_, elapsed_orig = time_match(FILE_REGEX_ORIG, evil_small, timeout=5.0)
evil_large = "aa_txn_" + "x_" * 10000 + "!"
_, elapsed_fixed = time_match(FILE_REGEX_FIXED, evil_large)
self.assertLess(elapsed_fixed, 1.0,
"Fixed pattern must stay fast at N=10000")
if __name__ == "__main__":
unittest.main()

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defects/hadoop/unit/test_hadoop_cwe1333.py Normal file
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"""
CWE-1333 ReDoS tests for Apache Hadoop regex patterns.
Tests one confirmed true positive:
1. RPC.Server.COMPLEX_SERVER_NAME_PATTERN (hadoop-0001-rpc)
Each test verifies:
- Functional correctness: patched pattern still matches valid inputs
- Complexity gate: pathological input completes in bounded time
"""
import re
import time
import unittest
# ---------------------------------------------------------------------------
# Original (vulnerable) pattern — Python transliteration of Java source
# ---------------------------------------------------------------------------
# (?:[^\$]*\$)*([A-Za-z][^\$]+)(?:\$\d+)?
# In Python, $ in character class does not need escaping, but we keep it
# faithful to the Java source which escapes \$.
COMPLEX_SERVER_NAME_ORIG = re.compile(
r"(?:[^\$]*\$)*([A-Za-z][^\$]+)(?:\$\d+)?"
)
# ---------------------------------------------------------------------------
# Patched pattern: inner * changed to +
# ---------------------------------------------------------------------------
COMPLEX_SERVER_NAME_FIXED = re.compile(
r"(?:[^\$]+\$)*([A-Za-z][^\$]+)(?:\$\d+)?"
)
# ---------------------------------------------------------------------------
# Helpers
# ---------------------------------------------------------------------------
def time_match(pattern, text, timeout=5.0):
"""Return (match_object, elapsed_seconds)."""
start = time.monotonic()
m = pattern.search(text)
elapsed = time.monotonic() - start
return m, elapsed
# ===========================================================================
# Test: RPC.Server.COMPLEX_SERVER_NAME_PATTERN (hadoop-0001-rpc)
# ===========================================================================
class TestComplexServerNameReDoS(unittest.TestCase):
"""hadoop-0001-rpc: star-of-star (?:[^\\$]*\\$)* in COMPLEX_SERVER_NAME_PATTERN."""
# -- Functional correctness --
def test_simple_class_name(self):
"""Simple class: 'MyServer' -> group(1) = 'MyServer'"""
m = COMPLEX_SERVER_NAME_FIXED.search("MyServer")
self.assertIsNotNone(m)
self.assertEqual(m.group(1), "MyServer")
def test_inner_class(self):
"""Inner class: 'Outer$Inner' -> group(1) = 'Inner'"""
m = COMPLEX_SERVER_NAME_FIXED.search("Outer$Inner")
self.assertIsNotNone(m)
self.assertEqual(m.group(1), "Inner")
def test_nested_inner_class(self):
"""Nested: 'A$B$CD' -> group(1) = 'CD' (capture requires 2+ chars)"""
m = COMPLEX_SERVER_NAME_FIXED.search("A$B$CD")
self.assertIsNotNone(m)
self.assertEqual(m.group(1), "CD")
def test_anonymous_inner_class(self):
"""Anonymous: 'Outer$Inner$1' -> group(1) = 'Inner', trailing $1 consumed"""
m = COMPLEX_SERVER_NAME_FIXED.search("Outer$Inner$1")
self.assertIsNotNone(m)
self.assertEqual(m.group(1), "Inner")
def test_protobuf_generated(self):
"""Protobuf: 'ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2'"""
m = COMPLEX_SERVER_NAME_FIXED.search(
"ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2"
)
self.assertIsNotNone(m)
self.assertEqual(m.group(1), "ClientNamenodeProtocol")
def test_deeply_nested(self):
"""Deep nesting: 'A$B$C$D$RealName$3'"""
m = COMPLEX_SERVER_NAME_FIXED.search("A$B$C$D$RealName$3")
self.assertIsNotNone(m)
self.assertEqual(m.group(1), "RealName")
def test_package_qualified(self):
"""Full package path: 'org.apache.hadoop.ipc.TestRPC$TestProtocol$1'"""
m = COMPLEX_SERVER_NAME_FIXED.search(
"org.apache.hadoop.ipc.TestRPC$TestProtocol$1"
)
self.assertIsNotNone(m)
self.assertEqual(m.group(1), "TestProtocol")
# -- Complexity gate --
def test_pathological_input_fixed_fast(self):
"""Patched pattern must handle N=10000 chars without $ in <1s.
The original star-of-star tries O(2^N) empty-match partitions
when no $ delimiter exists and the trailing anchor fails.
With the fix ([^$]+$ requiring progress), the engine runs in O(N).
"""
# Input with no $ signs and a trailing char that prevents
# the ([A-Za-z][^\$]+) group from matching cleanly
evil = "a" * 10000 + "!"
_, elapsed = time_match(COMPLEX_SERVER_NAME_FIXED, evil)
self.assertLess(elapsed, 1.0,
f"Fixed pattern took {elapsed:.3f}s on N=10000 (limit 1s)")
def test_pathological_no_match_fixed_fast(self):
"""Non-alpha start forces full scan, must stay O(N)."""
evil = "1" * 10000
_, elapsed = time_match(COMPLEX_SERVER_NAME_FIXED, evil)
self.assertLess(elapsed, 1.0,
f"Fixed pattern took {elapsed:.3f}s on numeric N=10000 (limit 1s)")
def test_many_dollar_segments_fixed_fast(self):
"""Many $ segments: 'a$' * N + '!' must stay O(N)."""
evil = "a$" * 5000 + "!"
_, elapsed = time_match(COMPLEX_SERVER_NAME_FIXED, evil)
self.assertLess(elapsed, 2.0,
f"Fixed pattern took {elapsed:.3f}s on 5000 segments (limit 2s)")
if __name__ == "__main__":
unittest.main()