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             AUSCERT External Security Bulletin Redistribution

                               ESB-2013.0438
                          libxml2 security update
                               26 March 2013

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           libxml2
Publisher:         Debian
Operating System:  Debian GNU/Linux 6
Impact/Access:     Denial of Service              -- Remote/Unauthenticated
                   Provide Misleading Information -- Remote/Unauthenticated
                   Reduced Security               -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2013-0339 CVE-2013-0338 

Reference:         ESB-2013.0383
                   ESB-2013.0307

Original Bulletin: 
   http://www.debian.org/security/2013/dsa-2652

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Debian Security Advisory DSA-2652-1                   security@debian.org
http://www.debian.org/security/                           Michael Gilbert
March 24, 2013                         http://www.debian.org/security/faq
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Package        : libxml2
Vulnerability  : external entity expansion
Problem type   : remote
Debian-specific: no
CVE ID         : CVE-2013-0338 CVE-2013-0339
Debian Bug     : 702260

Brad Hill of iSEC Partners discovered that many XML implementations are
vulnerable to external entity expansion issues, which can be used for
various purposes such as firewall circumvention, disguising an IP
address, and denial-of-service.  libxml2 was susceptible to these
problems when performing string substitution during entity expansion.

For the stable distribution (squeeze), these problems have been fixed in
version 2.7.8.dfsg-2+squeeze7.

For the testing (wheezy) and unstable (sid) distributions, these problems
have been fixed in version 2.8.0+dfsg1-7+nmu1.

We recommend that you upgrade your libxml2 packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: http://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org
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