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CVE ID: | CVE-2022-4304 |
Description: | 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. |
Test IDs: | 1.3.6.1.4.1.25623.1.1.4.2023.2624.1 1.3.6.1.4.1.25623.1.1.4.2023.2623.1 1.3.6.1.4.1.25623.1.1.4.2023.0584.1 1.3.6.1.4.1.25623.1.1.4.2023.2634.1 1.3.6.1.4.1.25623.1.1.4.2023.2633.1 1.3.6.1.4.1.25623.1.0.833355 1.3.6.1.4.1.25623.1.1.4.2023.2622.1 |
Cross References: |
Common Vulnerability Exposure (CVE) ID: CVE-2022-4304 https://security.gentoo.org/glsa/202402-08 OpenSSL Advisory https://www.openssl.org/news/secadv/20230207.txt |