Information Exposure Affecting openssl-1_1 package, versions <1.1.1d-150200.11.72.1
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Test your applications- Snyk ID SNYK-SLES152-OPENSSL11-5819686
- published 4 Aug 2023
- disclosed 3 Aug 2023
Introduced: 3 Aug 2023
CVE-2022-4304 Open this link in a new tabHow to fix?
Upgrade SLES:15.2 openssl-1_1 to version 1.1.1d-150200.11.72.1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream openssl-1_1 package and not the openssl-1_1 package as distributed by SLES.
See How to fix? for SLES:15.2 relevant fixed versions and status.
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.
References
- https://www.suse.com/security/cve/CVE-2022-4304.html
- https://bugzilla.suse.com/1207534
- https://bugzilla.suse.com/1210067
- https://bugzilla.suse.com/1213146
- https://bugzilla.suse.com/1213289
- https://bugzilla.suse.com/1215014
- https://www.openssl.org/news/secadv/20230207.txt
- https://security.gentoo.org/glsa/202402-08