Debian DLA-535-1 : xerces-c security update

high Nessus Plugin ID 91902

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Synopsis

The remote Debian host is missing a security update.

Description

Brandon Perry discovered that xerces-c, a validating XML parser library for C++, fails to successfully parse a DTD that is deeply nested, causing a stack overflow. A remote unauthenticated attacker can take advantage of this flaw to cause a denial of service against applications using the xerces-c library.

Additionally this update includes an enhancement to enable applications to fully disable DTD processing through the use of an environment variable (XERCES_DISABLE_DTD).

For Debian 7 'Wheezy', these problems have been fixed in version 3.1.1-3+deb7u4.

We recommend that you upgrade your xerces-c 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.

Solution

Upgrade the affected packages.

Plugin Details

Severity: High

ID: 91902

File Name: debian_DLA-535.nasl

Version: 2.9

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 7/1/2016

Updated: 1/11/2021

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:libxerces-c-dev, p-cpe:/a:debian:debian_linux:libxerces-c-doc, p-cpe:/a:debian:debian_linux:libxerces-c-samples, p-cpe:/a:debian:debian_linux:libxerces-c3.1, 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: 6/29/2016

Reference Information

CVE: CVE-2016-4463

Detections

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