CVE-2025-4877

Summary

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.

Affected Software

VendorProductVersion RangeStatus
0 < 0.11.2affected
Red HatRed Hat Enterprise Linux 90:0.10.4-18.el9 < *unaffected
Red HatRed Hat Enterprise Linux 90:0.10.4-18.el9 < *unaffected

Weaknesses

  • CWE-787: Out-of-bounds Write

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References