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

medium Nessus Plugin ID 73202

Synopsis

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

Description

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.

Solution

Update the affected openssh-server package.

See Also

https://usn.ubuntu.com/2155-1/

Plugin Details

Severity: Medium

ID: 73202

File Name: ubuntu_USN-2155-1.nasl

Version: 1.11

Type: local

Agent: unix

Published: 3/26/2014

Updated: 1/19/2021

Supported Sensors: Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent

Risk Information

VPR

Risk Factor: Low

Score: 3

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 5

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

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

CVSS v3

Risk Factor: Medium

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 Ease: No known exploits are available

Patch Publication Date: 3/25/2014

Vulnerability Publication Date: 3/18/2014

Reference Information

CVE: CVE-2014-2532

BID: 66355

USN: 2155-1