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SUSE-SU-2023:0584-1

Опубликовано: 01 мар. 2023
Источник: suse-cvrf

Описание

Security update for openssl

This update for openssl fixes the following issues:

  • CVE-2022-4304: Fixed timing Oracle in RSA Decryption (bsc#1207534).

Список пакетов

SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE
libopenssl0_9_8-0.9.8j-0.106.60.1
libopenssl0_9_8-32bit-0.9.8j-0.106.60.1
libopenssl0_9_8-hmac-0.9.8j-0.106.60.1
libopenssl0_9_8-hmac-32bit-0.9.8j-0.106.60.1
openssl-0.9.8j-0.106.60.1
openssl-doc-0.9.8j-0.106.60.1

Ссылки

Описание

A timing based side channel exists in the OpenSSL RSA Decryption implementation which could be sufficient to recover a plaintext across a network in a Bleichenbacher style attack. To achieve a successful decryption an attacker would have to be able to send a very large number of trial messages for decryption. The vulnerability affects all RSA padding modes: PKCS#1 v1.5, RSA-OEAP and RSASVE. For example, in a TLS connection, RSA is commonly used by a client to send an encrypted pre-master secret to the server. An attacker that had observed a genuine connection between a client and a server could use this flaw to send trial messages to the server and record the time taken to process them. After a sufficiently large number of messages the attacker could recover the pre-master secret used for the original connection and thus be able to decrypt the application data sent over that connection.

Затронутые продукты
SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE:libopenssl0_9_8-0.9.8j-0.106.60.1
SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE:libopenssl0_9_8-32bit-0.9.8j-0.106.60.1
SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE:libopenssl0_9_8-hmac-0.9.8j-0.106.60.1
SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE:libopenssl0_9_8-hmac-32bit-0.9.8j-0.106.60.1
Ссылки