CVE-2022-4304

Name
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.
NVD Severity
unknown
Other trackers
Mailing lists
Exploits
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
MISC https://www.openssl.org/news/secadv/20230207.txt
openssl-security@openssl.org https://security.gentoo.org/glsa/202402-08

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* openssl >= 3.0.0 < 3.0.8
cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* openssl >= 1.1.1 < 1.1.1t
cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* openssl >= 1.0.2 < 1.0.2zg

Vulnerable and fixed packages

Source package Branch Version Maintainer Status