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Test ID:1.3.6.1.4.1.25623.1.0.702659
Category:Debian Local Security Checks
Title:Debian Security Advisory DSA 2659-1 (libapache-mod-security - XML external entity processing vulnerability)
Summary:Timur Yunusov and Alexey Osipov from Positive Technologies discovered;that the XML files parser of ModSecurity, an Apache module whose purpose;is to tighten the Web application security, is vulnerable to XML;external entities attacks. A specially-crafted XML file provided by a;remote attacker, could lead to local file disclosure or excessive;resources (CPU, memory) consumption when processed.;;This update introduces a SecXmlExternalEntity option which is Off;;by default. This will disable the ability of libxml2 to load external;entities.
Description:Summary:
Timur Yunusov and Alexey Osipov from Positive Technologies discovered
that the XML files parser of ModSecurity, an Apache module whose purpose
is to tighten the Web application security, is vulnerable to XML
external entities attacks. A specially-crafted XML file provided by a
remote attacker, could lead to local file disclosure or excessive
resources (CPU, memory) consumption when processed.

This update introduces a SecXmlExternalEntity option which is Off

by default. This will disable the ability of libxml2 to load external
entities.

Affected Software/OS:
libapache-mod-security on Debian Linux

Solution:
For the stable distribution (squeeze), this problem has been fixed in
version 2.5.12-1+squeeze2.

For the testing distribution (wheezy), this problem has been fixed in
version 2.6.6-6 of the modsecurity-apache package.

For the unstable distribution (sid), this problem has been fixed in
version 2.6.6-6 of the modsecurity-apache package.

We recommend that you upgrade your libapache-mod-security packages.

CVSS Score:
7.5

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

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2013-1915
BugTraq ID: 58810
http://www.securityfocus.com/bid/58810
Debian Security Information: DSA-2659 (Google Search)
http://www.debian.org/security/2013/dsa-2659
http://lists.fedoraproject.org/pipermail/package-announce/2013-April/101911.html
http://lists.fedoraproject.org/pipermail/package-announce/2013-April/101898.html
http://lists.fedoraproject.org/pipermail/package-announce/2013-April/102616.html
http://www.mandriva.com/security/advisories?name=MDVSA-2013:156
https://bugzilla.redhat.com/show_bug.cgi?id=947842
http://www.openwall.com/lists/oss-security/2013/04/03/7
http://secunia.com/advisories/52847
http://secunia.com/advisories/52977
SuSE Security Announcement: openSUSE-SU-2013:1331 (Google Search)
http://lists.opensuse.org/opensuse-updates/2013-08/msg00020.html
SuSE Security Announcement: openSUSE-SU-2013:1336 (Google Search)
http://lists.opensuse.org/opensuse-updates/2013-08/msg00025.html
SuSE Security Announcement: openSUSE-SU-2013:1342 (Google Search)
http://lists.opensuse.org/opensuse-updates/2013-08/msg00031.html
CopyrightCopyright (C) 2013 Greenbone Networks GmbH http://greenbone.net

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