<?xml version="1.0" encoding="utf-8"?> <!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd"> <glsa id="200903-19"> <title>Xerces-C++: Denial of Service</title> <synopsis> An error in Xerces-C++ allows for a Denial of Service via malicious XML schema files. </synopsis> <product type="ebuild">xerces-c</product> <announced>2009-03-09</announced> <revised count="01">2009-03-09</revised> <bug>240496</bug> <access>remote</access> <affected> <package name="dev-libs/xerces-c" auto="yes" arch="*"> <unaffected range="ge">3.0.0-r1</unaffected> <vulnerable range="lt">3.0.0-r1</vulnerable> </package> </affected> <background> <p> Xerces-C++ is a validating XML parser written in a portable subset of C++. </p> </background> <description> <p> Frank Rast reported that the XML parser in Xerces-C++ does not correctly handle an XML schema definition with a large maxOccurs value, which triggers excessive memory consumption during the validation of an XML file. </p> </description> <impact type="normal"> <p> A remote attacker could entice a user or automated system to validate an XML file using a specially crafted XML schema file, leading to a Denial of Service (stack consumption and crash). </p> </impact> <workaround> <p> There is no known workaround at this time. </p> </workaround> <resolution> <p> All Xerces-C++ users should upgrade to the latest version: </p> <code> # emerge --sync # emerge --ask --oneshot --verbose ">=dev-libs/xerces-c-3.0.0-r1"</code> </resolution> <references> <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4482">CVE-2008-4482</uri> </references> <metadata tag="requester" timestamp="2009-01-11T17:39:39Z"> falco </metadata> <metadata tag="submitter" timestamp="2009-02-12T18:13:38Z"> rbu </metadata> <metadata tag="bugReady" timestamp="2009-02-12T18:13:55Z"> rbu </metadata> </glsa>