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

Critical Nessus Plugin ID 77854

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VPR Score: 9.6

Synopsis

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

Description

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.

Solution

Update the affected bash package.

See Also

https://usn.ubuntu.com/2362-1/

Plugin Details

Severity: Critical

ID: 77854

File Name: ubuntu_USN-2362-1.nasl

Version: 1.26

Type: local

Agent: unix

Published: 2014/09/25

Updated: 2021/01/19

Dependencies: 12634

Risk Information

Risk Factor: Critical

VPR Score: 9.6

CVSS v2.0

Base Score: 10

Temporal Score: 8.7

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

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

CVSS v3.0

Base Score: 9.8

Temporal Score: 9.4

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

Temporal Vector: CVSS:3.0/E:H/RL:O/RC:C

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

Vulnerability Publication Date: 2014/09/24

Exploitable With

Core Impact

Metasploit (Qmail SMTP Bash Environment Variable Injection (Shellshock))

Reference Information

CVE: CVE-2014-6271

USN: 2362-1

IAVA: 2014-A-0142