Ubuntu 6.06 LTS / 7.04 / 7.10 : openssh vulnerabilities (USN-649-1)

High Nessus Plugin ID 36855


The remote Ubuntu host is missing one or more security-related patches.


It was discovered that the ForceCommand directive could be bypassed.
If a local user created a malicious ~/.ssh/rc file, they could execute arbitrary commands as their user id. This only affected Ubuntu 7.10.

USN-355-1 fixed vulnerabilities in OpenSSH. It was discovered that the fixes for this issue were incomplete. A remote attacker could attempt multiple logins, filling all available connection slots, leading to a denial of service. This only affected Ubuntu 6.06 and 7.04.

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.


Update the affected packages.

Plugin Details

Severity: High

ID: 36855

File Name: ubuntu_USN-649-1.nasl

Version: $Revision: 1.10 $

Type: local

Agent: unix

Published: 2009/04/23

Modified: 2016/12/01

Dependencies: 12634

Risk Information

Risk Factor: High


Base Score: 9.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:openssh-client, p-cpe:/a:canonical:ubuntu_linux:openssh-server, p-cpe:/a:canonical:ubuntu_linux:ssh, p-cpe:/a:canonical:ubuntu_linux:ssh-askpass-gnome, p-cpe:/a:canonical:ubuntu_linux:ssh-krb5, cpe:/o:canonical:ubuntu_linux:6.06:-:lts, cpe:/o:canonical:ubuntu_linux:7.04, cpe:/o:canonical:ubuntu_linux:7.10

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Patch Publication Date: 2008/10/01

Vulnerability Publication Date: 2006/09/28

Reference Information

CVE: CVE-2006-5051, CVE-2008-1657, CVE-2008-4109

OSVDB: 29264, 43911

USN: 649-1

CWE: 264, 362