CVE-2025-4877

描述

There's a vulnerability in the libssh package where when a libssh consumer passes in an unexpectedly large input buffer to ssh_get_fingerprint_hash() function. In such cases the bin_to_base64() function can experience an integer overflow leading to a memory under allocation, when that happens it's possible that the program perform out of bounds write leading to a heap corruption. This issue affects only 32-bits builds of libssh.

如何修補 CVE-2025-4877

要修補 CVE-2025-4877,請將受影響套件升級到下列已修補版本。

• —升級至 0.9.8-0+deb11u2 或更新版本
• —升級至 0.9.8-0+deb11u2 或更新版本

CVE-2025-4877 正在被利用嗎?

低 — EPSS 為 0.2%,目前沒有觀察到大規模利用活動。

受影響套件(2)

• from 0, < 0.9.8-0+deb11u2
• from 0, < 0.9.8-0+deb11u2

CVSS 分數

參考連結(1)

• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2025-4877