MySQL 5.6.43, MySQL 5.7.25, OpenSSL - (bulletinapr2019)ID: oval:org.secpod.oval:def:2104586 | Date: (C)2019-12-30 (M)2023-12-20 |
Class: PATCH | Family: unix |
If an application encounters a fatal protocol error and then calls SSL_shutdown() twice (once to send a close_notify, and once to receive one) then OpenSSL can respond differently to the calling application if a 0 byte record is received with invalid padding compared to if a 0 byte record is received with an invalid MAC. If the application then behaves differently based on that in a way that is detectable to the remote peer, then this amounts to a padding oracle that could be used to decrypt data. In order for this to be exploitable "non-stitched" ciphersuites must be in use. Stitched ciphersuites are optimised implementations of certain commonly used ciphersuites. Also the application must call SSL_shutdown() twice even if a protocol error has occurred (applications should not do this but some do anyway). Fixed in OpenSSL 1.0.2r (Affected 1.0.2-1.0.2q).
Product: |
library/security/openssl |
library/security/openssl/openssl-fips-140 |
database/mysql-57 |
database/mysql-57/tests |
database/mysql-57/library |
database/mysql-57/embedded |
database/mysql-57/client |
database/mysql-56 |
database/mysql-56/tests |
database/mysql-56/library |
database/mysql-56/client |