cve/2025/CVE-2025-4877.md

CVE-2025-4877

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.

POC

Reference

No PoCs from references.

Github

• https://github.com/8-cm/kube-dump
• https://github.com/ARPSyndicate/cve-scores