Debian DSA-3898-1 : expat - security update

critical Nessus Plugin ID 101035

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Synopsis

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

Description

Multiple vulnerabilities have been discovered in Expat, an XML parsing C library. The Common Vulnerabilities and Exposures project identifies the following problems :

- CVE-2016-9063 Gustavo Grieco discovered an integer overflow flaw during parsing of XML. An attacker can take advantage of this flaw to cause a denial of service against an application using the Expat library.

- CVE-2017-9233 Rhodri James discovered an infinite loop vulnerability within the entityValueInitProcessor() function while parsing malformed XML in an external entity. An attacker can take advantage of this flaw to cause a denial of service against an application using the Expat library.

Solution

Upgrade the expat packages.

For the oldstable distribution (jessie), these problems have been fixed in version 2.1.0-6+deb8u4.

For the stable distribution (stretch), these problems have been fixed in version 2.2.0-2+deb9u1. For the stable distribution (stretch), CVE-2016-9063 was already fixed before the initial release.

Plugin Details

Severity: Critical

ID: 101035

File Name: debian_DSA-3898.nasl

Version: 3.10

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 6/26/2017

Updated: 1/4/2021

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:expat, cpe:/o:debian:debian_linux:8.0, cpe:/o:debian:debian_linux:9.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 6/25/2017

Reference Information

CVE: CVE-2016-9063, CVE-2017-9233

DSA: 3898

Detections

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