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vulnerability

Ubuntu: (Multiple Advisories) (CVE-2025-4877): libssh vulnerabilities

Severity
4
CVSS
(AV:L/AC:M/Au:S/C:P/I:P/A:P)
Published
Jun 25, 2025
Added
Jul 8, 2025
Modified
Apr 16, 2026

Description

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.

Solutions

ubuntu-pro-upgrade-libssh-4ubuntu-upgrade-libssh-4
Title
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