yuzu-emu/mbedtls
1
0
Fork 0
mirror of https://github.com/yuzu-emu/mbedtls.git synced 2024-11-25 22:15:37 +01:00
Code Issues Packages Projects Releases Wiki Activity
8f05aeb2e3
mbedtls/ChangeLog.d/fix_ccm_add_length_check.txt

6 lines
164 B
Plaintext
Raw Normal View History

Fix additional data length field check for CCM The CCM specification (NIST SP 800-38C) mandates that the formatting of the additional data length l(a) changes when it is greater _or equal_ to 2^16 - 2^8 (>= 0xFF00). Since such lengths are not supported in mbed TLS, the operation should fail in such cases. This commit fixes an off-by-one error which allowed encryption/decryption to be executed when l(a) was equal to 0xFF00, resulting in an incorrect/non-standard length format being used. Fixes #3719. Signed-off-by: Fredrik Strupe <fredrik.strupe@silabs.com>
2020-10-08 11:52:50 +02:00
Bugfix
* Fix an off-by-one error in the additional data length check for
CCM, which allowed encryption with a non-standard length field.
Fixes #3719.
Reference in New Issue Copy Permalink