Описание
Security update for compat-openssl098
This update for compat-openssl098 fixes the following issues:
- CVE-2019-1559: Fix 0-byte record padding oracle via SSL_shutdown (bsc#1127080)
- Reject invalid EC point coordinates (bsc#1131291)
- Fixed 'The 9 Lives of Bleichenbacher's CAT: Cache ATtacks on TLS Implementations' (bsc#1117951)
This update was imported from the SUSE:SLE-12:Update update project.
Список пакетов
openSUSE Leap 42.3
Ссылки
- E-Mail link for openSUSE-SU-2019:1637-1
- SUSE Security Ratings
Описание
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).
Затронутые продукты
Ссылки
- CVE-2019-1559
- SUSE Bug 1127080
- SUSE Bug 1130039
- SUSE Bug 1141798