Ubuntu 10.04 LTS / 12.04 LTS / 14.04 LTS : bash vulnerabilities (USN-2380-1) (Shellshock)

Critical Nessus Plugin ID 78260


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


Michal Zalewski discovered that Bash incorrectly handled parsing certain function definitions. If an attacker were able to create an environment variable containing a function definition with a very specific name, these issues could possibly be used to bypass certain environment restrictions and execute arbitrary code. (CVE-2014-6277, CVE-2014-6278)

Please note that the previous Bash security update, USN-2364-1, includes a hardening measure that prevents these issues from being used in a Shellshock attack.

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: 78260

File Name: ubuntu_USN-2380-1.nasl

Version: $Revision: 1.20 $

Type: local

Agent: unix

Published: 2014/10/11

Modified: 2016/08/16

Dependencies: 12634

Risk Information

Risk Factor: Critical


Base Score: 10

Temporal Score: 9.5

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

Temporal Vector: CVSS2#E:F/RL:U/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: 2014/10/09

Exploitable With

Core Impact

Metasploit (CUPS Filter Bash Environment Variable Code Injection (Shellshock))

Reference Information

CVE: CVE-2014-6277, CVE-2014-6278

BID: 70165, 70166

OSVDB: 112158, 112169

USN: 2380-1

IAVA: 2014-A-0142