vulnerability

Amazon Linux 2023: CVE-2023-2283: Medium priority package update for libssh

Severity
6
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:N)
Published
May 5, 2023
Added
Feb 17, 2025
Modified
Jul 9, 2025

Description

A vulnerability was found in libssh, where the authentication check of the connecting client can be bypassed in the`pki_verify_data_signature` function in memory allocation problems. This issue may happen if there is insufficient memory or the memory usage is limited. The problem is caused by the return value `rc,` which is initialized to SSH_ERROR and later rewritten to save the return value of the function call `pki_key_check_hash_compatible.` The value of the variable is not changed between this point and the cryptographic verification. Therefore any error between them calls `goto error` returning SSH_OK.

Solutions

amazon-linux-2023-upgrade-libsshamazon-linux-2023-upgrade-libssh-configamazon-linux-2023-upgrade-libssh-debuginfoamazon-linux-2023-upgrade-libssh-debugsourceamazon-linux-2023-upgrade-libssh-devel
Title
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