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(parent: 2c55a0b) | patch
Reject negative shifts for BN_rshift and BN_lshift
authorMatt Caswell <matt@openssl.org>
Tue, 19 May 2015 14:19:30 +0000 (15:19 +0100)
committerMatt Caswell <matt@openssl.org>
Fri, 22 May 2015 22:15:02 +0000 (23:15 +0100)
commit7cc18d8158b5fc2676393d99b51c30c135502107
tree45d10d9d5128ff63ade1d546f43e9b138aa9fa6etree | snapshot
parent2c55a0bc93bf578757ec5c85bdb3abe9cf3f4893commit | diff
Reject negative shifts for BN_rshift and BN_lshift

The functions BN_rshift and BN_lshift shift their arguments to the right or
left by a specified number of bits. Unpredicatable results (including
crashes) can occur if a negative number is supplied for the shift value.

Thanks to Mateusz Kocielski (LogicalTrust), Marek Kroemeke and Filip Palian
for discovering and reporting this issue.

Reviewed-by: Kurt Roeckx <kurt@openssl.org>
crypto/bn/bn_err.c diff | blob | history
crypto/bn/bn_shift.c diff | blob | history
doc/crypto/BN_set_bit.pod diff | blob | history
include/openssl/bn.h diff | blob | history
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