Out-of-bounds Write Affecting libssh package, versions [0,]
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Test your applications- Snyk IDSNYK-CONAN-LIBSSH-10598361
- published4 Jul 2025
- disclosed24 Jun 2025
- creditUnknown
Introduced: 24 Jun 2025
NewCVE-2025-4877 (opens in a new tab)Common Vulnerabilities and Exposures (CVE) are common identifiers for publicly known security vulnerabilities
Common Weakness Enumeration (CWE) is a category system for software weaknesses
Common Weakness Enumeration (CWE) is a category system for software weaknesses
How to fix?
A fix was pushed into the master branch but not yet published.
Overview
Affected versions of this package are vulnerable to Out-of-bounds Write in the bin_to_base64() function in base64.c. An attacker can cause memory corruption by supplying very large input to ssh_get_fingerprint_hash().
Note: This is only exploitable on 32-bit systems.