Ubuntu 10.04 LTS / 12.04 LTS / 14.04 LTS : bash vulnerability (USN-2362-1) (Shellshock)

Critical Nessus Plugin ID 77854


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


Stephane Chazelas discovered that Bash incorrectly handled trailing code in function definitions. An attacker could use this issue to bypass environment restrictions, such as SSH forced command environments.

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 bash package.

Plugin Details

Severity: Critical

ID: 77854

File Name: ubuntu_USN-2362-1.nasl

Version: $Revision: 1.19 $

Type: local

Agent: unix

Published: 2014/09/25

Modified: 2016/08/16

Dependencies: 12634

Risk Information

Risk Factor: Critical


Base Score: 10

Temporal Score: 8.3

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

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:bash, cpe:/o:canonical:ubuntu_linux:10.04:-:lts, cpe:/o:canonical:ubuntu_linux:12.04:-:lts, cpe:/o:canonical:ubuntu_linux:14.04

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2014/09/24

Exploitable With

Core Impact

Metasploit (Apache mod_cgi Bash Environment Variable Code Injection (Shellshock))

Reference Information

CVE: CVE-2014-6271

OSVDB: 112004

USN: 2362-1

IAVA: 2014-A-0142