CVE-2025-4877
Severity CVSS v4.0:
Pending analysis
Type:
CWE-787
Out-of-bounds Write
Publication date:
20/08/2025
Last modified:
20/08/2025
Description
There&#39;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&#39;s possible that the program perform out of bounds write leading to a heap corruption.<br />
This issue affects only 32-bits builds of libssh.
Impact
Base Score 3.x
4.50
Severity 3.x
MEDIUM