[openssl-commits] Passed: openssl/openssl#21189 (j - 5b4cb38)

Travis CI builds at travis-ci.org
Mon Oct 22 21:56:55 UTC 2018

Build Update for openssl/openssl

Build: #21189
Status: Passed

Duration: 38 mins and 52 secs
Commit: 5b4cb38 (j)
Author: Dr. Matthias St. Pierre
Message: RAND_add(): fix heap corruption in error path

This bug was introduced by #7382 which enhanced RAND_add() to
accept large buffer sizes. As a consequence, RAND_add() now fails
for buffer sizes less than 32 bytes (i.e. less than 256 bits).
In addition, rand_drbg_get_entropy() forgets to reset the attached
drbg->pool in the case of an error, which leads to the heap corruption.

The problem occurred with RAND_load_file(), which reads the file in
chunks of 1024 bytes each. If the size of the final chunk is less than
32 bytes, then RAND_add() fails, whence RAND_load_file() fails
silently for buffer sizes n = k * 1024 + r with r = 1,...,31.

This commit fixes the heap corruption only. The other issues will
be addressed in a separate pull request.

Thanks to Gisle Vanem for reporting this issue.

Fixes #7449

Reviewed-by: Paul Dale <paul.dale at oracle.com>
(Merged from https://github.com/openssl/openssl/pull/7455)

View the changeset: https://github.com/openssl/openssl/compare/j

View the full build log and details: https://travis-ci.org/openssl/openssl/builds/444792741?utm_medium=notification&utm_source=email


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