Debian DLA-664-1 : libxrender security update

critical Nessus Plugin ID 94112


The remote Debian host is missing a security update.


Tobias Stoeckmann from the OpenBSD project has discovered a number of issues in the way various X client libraries handle the responses they receive from servers. Insufficient validation of data from the X server could cause out of boundary memory writes in the libXrender library potentially allowing the user to escalate their privileges.

For Debian 7 'Wheezy', these problems have been fixed in version 1:0.9.7-1+deb7u3.

We recommend that you upgrade your libxrender packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.


Upgrade the affected packages.

See Also

Plugin Details

Severity: Critical

ID: 94112

File Name: debian_DLA-664.nasl

Version: 2.7

Type: local

Agent: unix

Published: 10/19/2016

Updated: 1/11/2021

Supported Sensors: Frictionless Assessment Agent, Nessus Agent

Risk Information


Risk Factor: Medium

Score: 5.9


Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

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


Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:libxrender-dev, p-cpe:/a:debian:debian_linux:libxrender1, p-cpe:/a:debian:debian_linux:libxrender1-dbg, p-cpe:/a:debian:debian_linux:libxrender1-udeb, cpe:/o:debian:debian_linux:7.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 10/18/2016

Reference Information

CVE: CVE-2016-7949, CVE-2016-7950