GLSA-200609-17 : OpenSSH: Denial of Service

This script is Copyright (C) 2006-2015 Tenable Network Security, Inc.

Synopsis :

The remote Gentoo host is missing one or more security-related

Description :

The remote host is affected by the vulnerability described in GLSA-200609-17
(OpenSSH: Denial of Service)

Tavis Ormandy of the Google Security Team discovered a Denial of
Service vulnerability in the SSH protocol version 1 CRC compensation
attack detector.

Impact :

A remote unauthenticated attacker may be able to trigger excessive CPU
usage by sending a pathological SSH message, denying service to other
legitimate users or processes.

Workaround :

The system administrator may disable SSH protocol version 1 in

See also :

Solution :

All OpenSSH users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=net-misc/openssh-4.3_p2-r5'

Risk factor :

High / CVSS Base Score : 7.8
CVSS Temporal Score : 6.8
Public Exploit Available : true

Family: Gentoo Local Security Checks

Nessus Plugin ID: 22464 (gentoo_GLSA-200609-17.nasl)

Bugtraq ID: 20216

CVE ID: CVE-2006-4924