GHSA-p52g-cm5j-mjv4

Source

https://github.com/advisories/GHSA-p52g-cm5j-mjv4

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/02/GHSA-p52g-cm5j-mjv4/GHSA-p52g-cm5j-mjv4.json

Aliases

• CVE-2022-4304
• RUSTSEC-2023-0007

Published

2023-02-08T22:31:42Z

Modified

2023-11-08T04:10:41.059156Z

Summary

openssl-src subject to Timing Oracle in RSA Decryption

Details

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://nvd.nist.gov/vuln/detail/CVE-2022-4304
• https://rustsec.org/advisories/RUSTSEC-2023-0007.html
• https://security.gentoo.org/glsa/202402-08
• https://www.openssl.org/news/secadv/20230207.txt