CVE-2023-2283

描述

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.

如何修補 CVE-2023-2283

要修補 CVE-2023-2283,請將受影響套件升級到下列已修補版本。

• —升級至 0.9.7-0+deb11u1 或更新版本

CVE-2023-2283 正在被利用嗎?

低 — EPSS 為 1.1%,目前沒有觀察到大規模利用活動。

受影響套件(1)

• from 0, < 0.9.7-0+deb11u1

CVSS 分數

參考連結(1)

• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2023-2283