Debian DSA-3550-1 : openssh - security update

High Nessus Plugin ID 90550

Synopsis

The remote Debian host is missing a security-related update.

Description

Shayan Sadigh discovered a vulnerability in OpenSSH: If PAM support is enabled and the sshd PAM configuration is configured to read userspecified environment variables and the 'UseLogin' option is enabled, a local user may escalate her privileges to root.

In Debian 'UseLogin' is not enabled by default.

Solution

Upgrade the openssh packages.

For the oldstable distribution (wheezy), this problem has been fixed in version 6.0p1-4+deb7u4.

For the stable distribution (jessie), this problem has been fixed in version 6.7p1-5+deb8u2.

See Also

https://packages.debian.org/source/wheezy/openssh

https://packages.debian.org/source/jessie/openssh

https://www.debian.org/security/2016/dsa-3550

Plugin Details

Severity: High

ID: 90550

File Name: debian_DSA-3550.nasl

Version: 2.6

Type: local

Agent: unix

Published: 2016/04/18

Updated: 2018/11/10

Dependencies: 12634

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 7.2

Temporal Score: 5.3

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

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

CVSS v3.0

Base Score: 7.8

Temporal Score: 6.8

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:openssh, cpe:/o:debian:debian_linux:7.0, cpe:/o:debian:debian_linux:8.0

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

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2016/04/15

Reference Information

CVE: CVE-2015-8325

DSA: 3550