Information Exposure Affecting openssl-libs package, versions <2:1.1.1k-9.ksplice1.el8_7
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Test your applications- Snyk ID SNYK-ORACLE8-OPENSSLLIBS-3368726
- published 1 Mar 2023
- disclosed 8 Feb 2023
Introduced: 8 Feb 2023
CVE-2022-4304 Open this link in a new tabHow to fix?
Upgrade Oracle:8 openssl-libs to version 2:1.1.1k-9.ksplice1.el8_7 or higher.
This issue was patched in ELSA-2023-12213.
NVD Description
Note: Versions mentioned in the description apply only to the upstream openssl-libs package and not the openssl-libs package as distributed by Oracle.
See How to fix? for Oracle:8 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://linux.oracle.com/cve/CVE-2022-4304.html
- https://linux.oracle.com/errata/ELSA-2023-0946.html
- https://linux.oracle.com/errata/ELSA-2023-12152.html
- https://linux.oracle.com/errata/ELSA-2023-12213.html
- https://linux.oracle.com/errata/ELSA-2023-13024.html
- https://linux.oracle.com/errata/ELSA-2023-13025.html
- https://linux.oracle.com/errata/ELSA-2023-32790.html
- https://www.openssl.org/news/secadv/20230207.txt
- https://security.gentoo.org/glsa/202402-08