CVE-2009-3720 Detail

Current 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.


View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  N/A
NVD score not yet provided.


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have not published a CVSS score for this CVE at this time. NVD Analysts use publicly available information at the time of analysis to associate CVSS vector strings.

Vendor Statements (disclaimer)

Official Statement fromRed Hat (03/05/2010)

Red Hat is aware of this issue and is tracking it via the following bug: https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2009-3720 The Red Hat Security Response Team has rated this issue as having moderate security impact in Python, a future update may address this flaw. If a system has PyXML installed, Python will use PyXML for expat-related functions and is then not vulnerable to the issue.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://expat.cvs.sourceforge.net/viewvc/expat/expat/lib/xmltok_impl.c?r1=1.13&r2=1.15&view=patch Exploit 
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://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.org%3E
https://lists.apache.org/thread.html/5df9bfb86a3b054bb985a45ff9250b0332c9ecc181eec232489e7f79@%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/8d63cb8e9100f28a99429b4328e4e7cebce861d5772ac9863ba2ae6f@%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/f7f95ac1cd9895db2714fa3ebaa0b94d0c6df360f742a40951384a53@%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/r0276683d8e1e07153fc8642618830ac0ade85b9ae0dc7b07f63bb8fc@%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/r57608dc51b79102f3952ae06f54d5277b649c86d6533dcd6a7d201f7@%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/r8828e649175df56f1f9e3919938ac7826128525426e2748f0ab62feb@%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/rfbaf647d52c1cb843e726a0933f156366a806cead84fbd430951591b@%3Ccvs.httpd.apache.org%3E
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11019
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12719
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7112
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

Weakness Enumeration

CWE-ID CWE Name Source
NVD-CWE-noinfo Insufficient Information cwe source acceptance level NIST  

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Change History

6 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2009-3720
NVD Published Date:
11/03/2009
NVD Last Modified:
09/18/2017
Source:
Red Hat, Inc.