medium
5
CWE
119
Advisory Published
CVE Published
CVE Published
Updated

CVE-2009-3560: Buffer Overflow

First published: Thu Nov 05 2009(Updated: )

Expat is vulnerable to a denial of service, caused by the improper handling of XML data by the big2_toUtf8 function within the libexpat library. A remote attacker could exploit this vulnerability using a specially-crafted XML document containing malformed UTF-8 sequences that trigger a buffer over-read to cause the application to crash.

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
redhat/expat<0:1.95.7-4.el4_8.2
0:1.95.7-4.el4_8.2
redhat/expat<0:1.95.8-8.3.el5_4.2
0:1.95.8-8.3.el5_4.2
redhat/expat<2.1.0
2.1.0
Expat=2.0.1
XML-Twig for Perl
IBM Engineering Requirements Management DOORS<=9.7.2.8
IBM Engineering Requirements Management DOORS Web Access<=9.7.2.8
IBM Rational DOORS<=9.6.1.x
Debian (libexpat1)=2.0.1
Apache Http Server>=2.0.35<2.0.64
Apache Http Server>=2.2.0<2.2.17

Remedy

http://expat.cvs.sourceforge.net/viewvc/expat/expat/lib/xmlparse.c?view=log#rev1.165

Remedy

https://bugzilla.redhat.com/show_bug.cgi?id=533174

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the severity of CVE-2009-3560?

    CVE-2009-3560 has a severity rating that indicates it can lead to denial of service due to improper XML data handling.

  • How do I fix CVE-2009-3560?

    To fix CVE-2009-3560, update to the latest version of the affected software, ensuring it is above the specified vulnerable versions.

  • Which software is affected by CVE-2009-3560?

    CVE-2009-3560 affects older versions of the Expat library, specific versions of IBM DOORS, and certain versions of Apache HTTP Server.

  • Can CVE-2009-3560 be exploited remotely?

    Yes, CVE-2009-3560 can be exploited remotely using specially crafted XML documents.

  • What types of attacks can CVE-2009-3560 facilitate?

    CVE-2009-3560 can facilitate denial of service attacks by triggering buffer overflows through malformed UTF-8 sequences.

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