CVE-2022-4304

CVSS V2 None CVSS V3 None
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.
Overview
  • CVE ID
  • CVE-2022-4304
  • Assigner
  • openssl-security@openssl.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2023-02-08T20:15:23
  • Last Modified Date
  • 2023-02-24T17:13:57
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* 1 OR 1.0.2 1.0.2zg
cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* 1 OR 1.1.1 1.1.1t
cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* 1 OR 3.0.0 3.0.8
References
Reference URL Reference Tags
https://www.openssl.org/news/secadv/20230207.txt Vendor Advisory
History
Created Old Value New Value Data Type Notes
2023-04-17 07:24:40 Added to TrackCVE
2023-04-17 07:24:42 Weakness Enumeration new