Ubuntu 10.04 LTS / 12.04 LTS / 14.04 LTS : bash vulnerabilities (USN-2364-1)

critical Nessus Plugin ID 77961
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Synopsis

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

Description

Florian Weimer and Todd Sabin discovered that the Bash parser incorrectly handled memory. An attacker could possibly use this issue to bypass certain environment restrictions and execute arbitrary code.
(CVE-2014-7186, CVE-2014-7187)

In addition, this update introduces a hardening measure which adds prefixes and suffixes around environment variable names which contain shell functions.

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/2364-1/

Plugin Details

Severity: Critical

ID: 77961

File Name: ubuntu_USN-2364-1.nasl

Version: 1.23

Type: local

Agent: unix

Published: 9/29/2014

Updated: 1/19/2021

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.8

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

Temporal Vector: E:POC/RL:OF/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: 9/27/2014

Vulnerability Publication Date: 9/28/2014

Reference Information

CVE: CVE-2014-7186, CVE-2014-7187

BID: 70152, 70154

USN: 2364-1

IAVA: 2014-A-0142