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Suggestion detail

Untriaged
Permalink CVE-2025-4877
4.5 MEDIUM
  • CVSS version: 3.1
  • Attack vector (AV): LOCAL
  • Attack complexity (AC): HIGH
  • Privileges required (PR): LOW
  • User interaction (UI): NONE
  • Scope (S): UNCHANGED
  • Confidentiality impact (C): LOW
  • Integrity impact (I): LOW
  • Availability impact (A): LOW
created 6 months, 1 week ago
Libssh: write beyond bounds in binary to base64 conversion functions

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.

References

Affected products

rhcos
libssh
  • <0.11.2
libssh2

Matching in nixpkgs

pkgs.libssh

SSH client library

  • nixos-unstable -

pkgs.libssh2

Client-side C library implementing the SSH2 protocol

  • nixos-unstable -

Package maintainers