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CVE-2022-4304 (GCVE-0-2022-4304)

Vulnerability from cvelistv5

Published

2023-02-08 19:04

Modified

2025-05-01 03:55

Severity ?

CWE

timing based side channel attack

Summary

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

►

URL

Tags

	https://www.openssl.org/news/secadv/20230207.txt	vendor-advisory
	https://security.gentoo.org/glsa/202402-08

Impacted products

	Vendor	Product	Version
	OpenSSL	OpenSSL	Version: 3.0.0 ≤ Version: 1.1.1 < 1.1.1t Version: 1.0.2 < 1.0.2zg

Show details on NVD website

JSON

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Vulnerability from fkie_nvd