DEBIAN-CVE-2019-17498

DEBIAN-CVE-2019-17498 PUBLISHED CVSS 8.100000381469727 HIGH

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.

Risk Scores

CVSS 3.1

8.100000381469727

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

Affected Products

Vendor	Product	Versions
Debian:14	libssh2	0, 0, 0
Debian:12	libssh2	0, 0, 0
Debian:11	libssh2	0, 0, 0
Debian:13	libssh2	0, 0, 0

Exploit Intelligence

Secure coding project, research on CVE-2019-17498 and implement a player score function written in C. (github-poc-repo)
Secure coding project, research on CVE-2019-17498 and implement a player score function written in C. (github-poc)

Timeline

Oct 21, 2019 CVE Published
Apr 28, 2026 CVE Updated

References

https://security-tracker.debian.org/tracker/CVE-2019-17498 advisory

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