CVE-2009-3720 Information

Description

The updatePosition function in lib/xmltok_impl.c in libexpat in Expat 2.0.1 as used in Python PyXML w3c-libwww and other software allows context-dependent attackers to cause a denial of service (application crash) via an XML document with crafted UTF-8 sequences that trigger a buffer over-read a different vulnerability than CVE-2009-2625.

Reference

http://expat.cvs.sourceforge.net/viewvc/expat/expat/lib/xmltok_impl.c?r1=1.13&r2=1.15&view=patch http://expat.cvs.sourceforge.net/viewvc/expat/expat/lib/xmltok_impl.c?view=log http://lists.fedoraproject.org/pipermail/package-announce/2010-November/051228.html http://lists.fedoraproject.org/pipermail/package-announce/2010-November/051247.html http://lists.fedoraproject.org/pipermail/package-announce/2010-November/051367.html http://lists.fedoraproject.org/pipermail/package-announce/2010-November/051405.html http://lists.fedoraproject.org/pipermail/package-announce/2010-November/051442.html http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00004.html http://lists.opensuse.org/opensuse-security-announce/2010-05/msg00001.html http://lists.opensuse.org/opensuse-security-announce/2010-05/msg00002.html http://lists.opensuse.org/opensuse-security-announce/2010-06/msg00001.html http://lists.opensuse.org/opensuse-security-announce/2010-08/msg00001.html http://lists.vmware.com/pipermail/security-announce/2010/000082.html http://mail.python.org/pipermail/expat-bugs/2009-January/002781.html http://marc.info/?l=bugtraq&m=130168502603566&w=2 http://secunia.com/advisories/37324 http://secunia.com/advisories/37537 http://secunia.com/advisories/37925 http://secunia.com/advisories/38050 http://secunia.com/advisories/38231 http://secunia.com/advisories/38794 http://secunia.com/advisories/38832 http://secunia.com/advisories/38834 http://secunia.com/advisories/39478 http://secunia.com/advisories/41701 http://secunia.com/advisories/42326 http://secunia.com/advisories/42338 http://secunia.com/advisories/43300 http://slackware.com/security/viewer.php?l=slackware-security&y=2011&m=slackware-security.486026 http://sourceforge.net/tracker/index.php?func=detail&aid=1990430&group_id=10127&atid=110127 http://sunsolve.sun.com/search/document.do?assetkey=1-66-273630-1 http://svn.python.org/view?view=rev&revision=74429 http://www.mandriva.com/security/advisories?name=MDVSA-2009:211 http://www.mandriva.com/security/advisories?name=MDVSA-2009:212 http://www.mandriva.com/security/advisories?name=MDVSA-2009:215 http://www.mandriva.com/security/advisories?name=MDVSA-2009:216 http://www.mandriva.com/security/advisories?name=MDVSA-2009:217 http://www.mandriva.com/security/advisories?name=MDVSA-2009:218 http://www.mandriva.com/security/advisories?name=MDVSA-2009:219 http://www.mandriva.com/security/advisories?name=MDVSA-2009:220 http://www.openwall.com/lists/oss-security/2009/08/21/2 http://www.openwall.com/lists/oss-security/2009/08/26/3 http://www.openwall.com/lists/oss-security/2009/08/26/4 http://www.openwall.com/lists/oss-security/2009/08/27/6 http://www.openwall.com/lists/oss-security/2009/09/06/1 http://www.openwall.com/lists/oss-security/2009/10/22/5 http://www.openwall.com/lists/oss-security/2009/10/22/9 http://www.openwall.com/lists/oss-security/2009/10/23/2 http://www.openwall.com/lists/oss-security/2009/10/23/6 http://www.openwall.com/lists/oss-security/2009/10/26/3 http://www.openwall.com/lists/oss-security/2009/10/28/3 http://www.redhat.com/support/errata/RHSA-2010-0002.html http://www.redhat.com/support/errata/RHSA-2011-0896.html http://www.securitytracker.com/id?1023160 http://www.ubuntu.com/usn/USN-890-1 http://www.ubuntu.com/usn/USN-890-6 http://www.vupen.com/english/advisories/2010/0528 http://www.vupen.com/english/advisories/2010/0896 http://www.vupen.com/english/advisories/2010/1107 http://www.vupen.com/english/advisories/2010/3035 http://www.vupen.com/english/advisories/2010/3053 http://www.vupen.com/english/advisories/2010/3061 http://www.vupen.com/english/advisories/2011/0359 https://bugs.gentoo.org/show_bug.cgi?id=280615 https://bugzilla.redhat.com/show_bug.cgi?id=531697 https://lists.apache.org/thread.html/54a42d4b01968df1117cea77fc53d6beb931c0e05936ad02af93e9ac@3Ccvs.httpd.apache.org3E https://lists.apache.org/thread.html/5df9bfb86a3b054bb985a45ff9250b0332c9ecc181eec232489e7f79@3Ccvs.httpd.apache.org3E https://lists.apache.org/thread.html/8d63cb8e9100f28a99429b4328e4e7cebce861d5772ac9863ba2ae6f@3Ccvs.httpd.apache.org3E https://lists.apache.org/thread.html/f7f95ac1cd9895db2714fa3ebaa0b94d0c6df360f742a40951384a53@3Ccvs.httpd.apache.org3E https://lists.apache.org/thread.html/r0276683d8e1e07153fc8642618830ac0ade85b9ae0dc7b07f63bb8fc@3Ccvs.httpd.apache.org3E https://lists.apache.org/thread.html/r57608dc51b79102f3952ae06f54d5277b649c86d6533dcd6a7d201f7@3Ccvs.httpd.apache.org3E https://lists.apache.org/thread.html/r8828e649175df56f1f9e3919938ac7826128525426e2748f0ab62feb@3Ccvs.httpd.apache.org3E https://lists.apache.org/thread.html/rfbaf647d52c1cb843e726a0933f156366a806cead84fbd430951591b@3Ccvs.httpd.apache.org3E https://oval.cisecurity.org/repository/search/definition/oval3Aorg.mitre.oval3Adef3A11019 https://oval.cisecurity.org/repository/search/definition/oval3Aorg.mitre.oval3Adef3A12719 https://oval.cisecurity.org/repository/search/definition/oval3Aorg.mitre.oval3Adef3A7112 https://www.redhat.com/archives/fedora-package-announce/2009-December/msg00370.html https://www.redhat.com/archives/fedora-package-announce/2009-December/msg00413.html https://www.redhat.com/archives/fedora-package-announce/2009-December/msg01274.html