VULNERABILITY INTELLIGENCE

CVE-2019-17498

CVSS score8.1 HIGH
EPSS probability3.81%
CISA KEVNot currently listed
Published2019-10-21
Last modified2026-10-14
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

Description

In libssh2 v1.9.0 and earlier versions, the SSH_MSG_DISCONNECT logic in packet.c has an integer overflow in a bounds check, enabling an attacker to specify an arbitrary (out-of-bounds) offset for a subsequent memory read. A crafted SSH server may be able to disclose sensitive information or cause a denial of service condition on the client system when a user connects to the server.

Weakness classification

  • CWE-190: Integer Overflow or Wraparound

Primary references