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| author | Nick Mathewson <nickm@torproject.org> | 2021-06-10 08:34:25 -0400 |
|---|---|---|
| committer | Nick Mathewson <nickm@torproject.org> | 2021-06-10 08:34:25 -0400 |
| commit | 7fdfc2ea5470c572a113321e19cdb5144b10cdd8 (patch) | |
| tree | 0a7512f1e32595e37713712193686d4a903e4e3f | |
| parent | 520d5c108f84e8afedc16ab057cbfe5abfab6df2 (diff) | |
| parent | c0aa9e0a1b1633d3b221199d516294e14a5db9c6 (diff) | |
| download | tor-7fdfc2ea5470c572a113321e19cdb5144b10cdd8.tar.gz tor-7fdfc2ea5470c572a113321e19cdb5144b10cdd8.zip | |
Merge branch 'bug40390_035_squashed' into maint-0.3.5
| -rw-r--r-- | changes/ticket40390 | 8 | ||||
| -rw-r--r-- | src/lib/crypt_ops/crypto_rand.c | 2 |
2 files changed, 9 insertions, 1 deletions
diff --git a/changes/ticket40390 b/changes/ticket40390 new file mode 100644 index 0000000000..b56fa4d9da --- /dev/null +++ b/changes/ticket40390 @@ -0,0 +1,8 @@ + o Major bugfixes (security, defense-in-depth): + - Detect a wider variety of failure conditions from the OpenSSL RNG + code. Previously, we would detect errors from a missing RNG + implementation, but not failures from the RNG code itself. + Fortunately, it appears those failures do not happen in practice + when Tor is using OpenSSL's default RNG implementation. + Fixes bug 40390; bugfix on 0.2.8.1-alpha. This issue is also tracked as + TROVE-2021-004. Reported by Jann Horn at Google's Project Zero. diff --git a/src/lib/crypt_ops/crypto_rand.c b/src/lib/crypt_ops/crypto_rand.c index 915fe0870d..206929d6b3 100644 --- a/src/lib/crypt_ops/crypto_rand.c +++ b/src/lib/crypt_ops/crypto_rand.c @@ -525,7 +525,7 @@ crypto_rand_unmocked(char *to, size_t n) /* We consider a PRNG failure non-survivable. Let's assert so that we get a * stack trace about where it happened. */ - tor_assert(r >= 0); + tor_assert(r == 1); #endif } |