Information Exposure Affecting openssl package, versions <3.1.0-r0
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Test your applications- Snyk ID SNYK-WOLFILATEST-OPENSSL-5847342
- published 21 Aug 2023
- disclosed 8 Feb 2023
Introduced: 8 Feb 2023
CVE-2022-4304 Open this link in a new tabHow to fix?
Upgrade Wolfi openssl to version 3.1.0-r0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream openssl package and not the openssl package as distributed by Wolfi.
See How to fix? for Wolfi relevant fixed versions and status.
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.