Debian DSA-3582-1 : expat - security update

critical Nessus Plugin ID 91200

Synopsis

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

Description

Gustavo Grieco discovered that Expat, an XML parsing C library, does not properly handle certain kinds of malformed input documents, resulting in buffer overflows during processing and error reporting. A remote attacker can take advantage of this flaw to cause an application using the Expat library to crash, or potentially, to execute arbitrary code with the privileges of the user running the application.

Solution

Upgrade the expat packages.

For the stable distribution (jessie), this problem has been fixed in version 2.1.0-6+deb8u2. Additionally this update refreshes the fix for CVE-2015-1283 to avoid relying on undefined behavior.

See Also

https://security-tracker.debian.org/tracker/CVE-2015-1283

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

https://www.debian.org/security/2016/dsa-3582

Plugin Details

Severity: Critical

ID: 91200

File Name: debian_DSA-3582.nasl

Version: 2.14

Type: local

Agent: unix

Published: 5/18/2016

Updated: 1/11/2021

Supported Sensors: Frictionless Assessment Agent, Nessus Agent

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

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

CVSS v3

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:expat, cpe:/o:debian:debian_linux:8.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 5/18/2016

Reference Information

CVE: CVE-2016-0718, CVE-2016-4472

DSA: 3582