Public Date:
533174: CVE-2009-3560 expat: buffer over-read and crash in big2_toUtf8() on XML with malformed UTF-8 sequences

The MITRE CVE dictionary describes this issue as:

The big2_toUtf8 function in lib/xmltok.c in libexpat in Expat 2.0.1, as used in the XML-Twig module for Perl, allows context-dependent attackers to cause a denial of service (application crash) via an XML document with malformed UTF-8 sequences that trigger a buffer over-read, related to the doProlog function in lib/xmlparse.c, a different vulnerability than CVE-2009-2625 and CVE-2009-3720.

Find out more about CVE-2009-3560 from the MITRE CVE dictionary dictionary and NIST NVD.


Red Hat Enterprise Linux 5:
This vulnerability has been rated as having a security impact of Moderate. After evaluation and in accordance with the criteria noted in the product support life cycle, there are no plans to address this issue in an upcoming release. Please contact Red Hat Support for further information.

CVSS v2 metrics

Base Score 5
Base Metrics AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat Security Errata

Platform Errata Release Date
Red Hat JBoss Enterprise Application Platform 6.4 RHSA-2017:3239 2017-11-16
Red Hat Enterprise Linux 3 (expat) RHSA-2009:1625 2009-12-07
Red Hat JBoss Web Server 1.0 RHSA-2011:0896 2011-06-22
Red Hat Enterprise Linux 5 (expat) RHSA-2009:1625 2009-12-07
Red Hat Enterprise Linux 4 (expat) RHSA-2009:1625 2009-12-07

Affected Packages State

Platform Package State
Red Hat Enterprise Linux 7 expat Not affected
Red Hat Enterprise Linux 6 expat Not affected
Red Hat Enterprise Linux 6 compat-expat1 Not affected
Red Hat Enterprise Linux 5 xmlrpc-c Will not fix
Unless explicitly stated as not affected, all previous versions of packages in any minor update stream of a product listed here should be assumed vulnerable, although may not have been subject to full analysis.
Last Modified

CVE description copyright © 2017, The MITRE Corporation