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openSUSE-SU-2019:1175-1

Опубликовано: 08 апр. 2019
Источник: suse-cvrf

Описание

Security update for openssl

This update for openssl fixes the following issues:

Security issues fixed:

  • The 9 Lives of Bleichenbacher's CAT: Cache Attacks on TLS Implementations (bsc#1117951)
  • CVE-2019-1559: Fixed OpenSSL 0-byte Record Padding Oracle which under certain circumstances a TLS server can be forced to respond differently to a client and lead to the decryption of the data (bsc#1127080).

Other issues addressed:

  • Fixed IV handling in SHAEXT paths: aes/asm/aesni-sha*-x86_64.pl (bsc#1113975).
  • Set TLS version to 0 in msg_callback for record messages to avoid confusing applications (bsc#1100078).

This update was imported from the SUSE:SLE-12-SP2:Update update project.

Список пакетов

openSUSE Leap 42.3
libopenssl-devel-1.0.2j-35.1
libopenssl-devel-32bit-1.0.2j-35.1
libopenssl1_0_0-1.0.2j-35.1
libopenssl1_0_0-32bit-1.0.2j-35.1
libopenssl1_0_0-hmac-1.0.2j-35.1
libopenssl1_0_0-hmac-32bit-1.0.2j-35.1
openssl-1.0.2j-35.1
openssl-cavs-1.0.2j-35.1
openssl-doc-1.0.2j-35.1

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
openSUSE Leap 42.3:libopenssl-devel-1.0.2j-35.1
openSUSE Leap 42.3:libopenssl-devel-32bit-1.0.2j-35.1
openSUSE Leap 42.3:libopenssl1_0_0-1.0.2j-35.1
openSUSE Leap 42.3:libopenssl1_0_0-32bit-1.0.2j-35.1
Ссылки