Debian DSA-1921-1 : expat - denial of service

medium Nessus Plugin ID 44786



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


Peter Valchev discovered an error in expat, an XML parsing C library, when parsing certain UTF-8 sequences, which can be exploited to crash an application using the library.


Upgrade the expat packages.

For the old stable distribution (etch), this problem has been fixed in version 1.95.8-3.4+etch1.

For the stable distribution (lenny), this problem has been fixed in version 2.0.1-4+lenny1.

See Also

Plugin Details

Severity: Medium

ID: 44786

File Name: debian_DSA-1921.nasl

Version: 1.15

Type: local

Agent: unix

Published: 2/24/2010

Updated: 1/4/2021

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

Risk Information


Risk Factor: Low

Score: 3.6


Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:expat, cpe:/o:debian:debian_linux:4.0, cpe:/o:debian:debian_linux:5.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 10/28/2009

Reference Information

CVE: CVE-2009-2625

BID: 35958

CWE: 264

DSA: 1921