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| author | Nick Mathewson <nickm@torproject.org> | 2017-02-07 10:58:02 -0500 |
|---|---|---|
| committer | Nick Mathewson <nickm@torproject.org> | 2017-02-14 16:10:27 -0500 |
| commit | 194e31057fbf07d6bdf4b62d26e1a9db334e5f1c (patch) | |
| tree | 5dfedea08b7fb6b4bc0a0e2cae42e3f0afb1f77f /changes | |
| parent | 635c5a8a92c8066412645b291817eadcc82d8f8f (diff) | |
| download | tor-194e31057fbf07d6bdf4b62d26e1a9db334e5f1c.tar.gz tor-194e31057fbf07d6bdf4b62d26e1a9db334e5f1c.zip | |
Avoid integer underflow in tor_version_compare.
Fix for TROVE-2017-001 and bug 21278.
(Note: Instead of handling signed ints "correctly", we keep the old
behavior, except for the part where we would crash with -ftrapv.)
Diffstat (limited to 'changes')
| -rw-r--r-- | changes/trove-2017-001.2 | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/changes/trove-2017-001.2 b/changes/trove-2017-001.2 new file mode 100644 index 0000000000..3ef073cf9f --- /dev/null +++ b/changes/trove-2017-001.2 @@ -0,0 +1,8 @@ + o Major bugfixes (parsing): + - Fix an integer underflow bug when comparing malformed Tor versions. + This bug is harmless, except when Tor has been built with + --enable-expensive-hardening, which would turn it into a crash; + or on Tor 0.2.9.1-alpha through Tor 0.2.9.8, which were built with + -ftrapv by default. + Part of TROVE-2017-001. Fixes bug 21278; bugfix on + 0.0.8pre1. Found by OSS-Fuzz. |