CVE-2019-17498
HIGH8.1EPSS 1.4%libssh2 - security update
Published: 10/21/2019Modified: 12/3/2025
Also known as:ALPINE-CVE-2019-17498DEBIAN-CVE-2019-17498
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.
Affected packages (3)
- Alpine/libssh2from 0, < 1.9.0-r1
- Debian/libssh2from 0, < 1.9.0-1
- Debian/libssh2from 0, < 1.4.3-4.1+deb8u6
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H |