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SUSE-SU-2019:14091-1

Опубликовано: 18 июн. 2019
Источник: suse-cvrf

Описание

Security update for openssl1

This update for openssl1 fixes the following security 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)

Список пакетов

SUSE Linux Enterprise Server 11-SECURITY
libopenssl1-devel-1.0.1g-0.58.18.1
libopenssl1_0_0-1.0.1g-0.58.18.1
openssl1-1.0.1g-0.58.18.1
openssl1-doc-1.0.1g-0.58.18.1

Ссылки

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
SUSE Linux Enterprise Server 11-SECURITY:libopenssl1-devel-1.0.1g-0.58.18.1
SUSE Linux Enterprise Server 11-SECURITY:libopenssl1_0_0-1.0.1g-0.58.18.1
SUSE Linux Enterprise Server 11-SECURITY:openssl1-1.0.1g-0.58.18.1
SUSE Linux Enterprise Server 11-SECURITY:openssl1-doc-1.0.1g-0.58.18.1
Ссылки