Ubuntu 10.04 LTS / 12.04 LTS / 12.10 / 13.10 : openssh vulnerability (USN-2155-1)

Medium Nessus Plugin ID 73202


The remote Ubuntu host is missing a security-related patch.


Jann Horn discovered that OpenSSH incorrectly handled wildcards in AcceptEnv lines. A remote attacker could use this issue to possibly bypass certain intended environment variable restrictions.

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 openssh-server package.

Plugin Details

Severity: Medium

ID: 73202

File Name: ubuntu_USN-2155-1.nasl

Version: $Revision: 1.7 $

Type: local

Agent: unix

Published: 2014/03/26

Modified: 2016/12/01

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 5.8

Temporal Score: 5

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

Temporal Vector: CVSS2#E:ND/RL:OF/RC:C


Base Score: 4.9

Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:openssh-server, cpe:/o:canonical:ubuntu_linux:10.04:-:lts, cpe:/o:canonical:ubuntu_linux:12.04:-:lts, cpe:/o:canonical:ubuntu_linux:12.10, cpe:/o:canonical:ubuntu_linux:13.10

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

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2014/03/25

Reference Information

CVE: CVE-2014-2532

BID: 66355

USN: 2155-1