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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2009-3720 Detail

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

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

Vendor Statements (disclaimer)

Official Statement from Red 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

By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to [email protected].

URL Source(s) Tag(s)
http://expat.cvs.sourceforge.net/viewvc/expat/expat/lib/xmltok_impl.c?r1=1.13&r2=1.15&view=patch CVE, Inc., Red Hat Exploit 
http://expat.cvs.sourceforge.net/viewvc/expat/expat/lib/xmltok_impl.c?view=log CVE, Inc., Red Hat Mailing List  Third Party Advisory 
http://lists.fedoraproject.org/pipermail/package-announce/2010-November/051228.html CVE, Inc., Red Hat Third Party Advisory 
http://lists.fedoraproject.org/pipermail/package-announce/2010-November/051247.html CVE, Inc., Red Hat Mailing List  Third Party Advisory 
http://lists.fedoraproject.org/pipermail/package-announce/2010-November/051367.html CVE, Inc., Red Hat Third Party Advisory 
http://lists.fedoraproject.org/pipermail/package-announce/2010-November/051405.html CVE, Inc., Red Hat Third Party Advisory 
http://lists.fedoraproject.org/pipermail/package-announce/2010-November/051442.html CVE, Inc., Red Hat Third Party Advisory 
http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00004.html CVE, Inc., Red Hat Third Party Advisory 
http://lists.opensuse.org/opensuse-security-announce/2010-05/msg00001.html CVE, Inc., Red Hat Third Party Advisory  VDB Entry 
http://lists.opensuse.org/opensuse-security-announce/2010-05/msg00002.html CVE, Inc., Red Hat Third Party Advisory  VDB Entry 
http://lists.opensuse.org/opensuse-security-announce/2010-06/msg00001.html CVE, Inc., Red Hat Third Party Advisory  VDB Entry 
http://lists.opensuse.org/opensuse-security-announce/2010-08/msg00001.html CVE, Inc., Red Hat Third Party Advisory  VDB Entry 
http://lists.vmware.com/pipermail/security-announce/2010/000082.html CVE, Inc., Red Hat Broken Link 
http://mail.python.org/pipermail/expat-bugs/2009-January/002781.html CVE, Inc., Red Hat Third Party Advisory 
http://marc.info/?l=bugtraq&m=130168502603566&w=2 CVE, Inc., Red Hat Mailing List  Third Party Advisory 
http://secunia.com/advisories/37324 CVE, Inc., Red Hat Broken Link 
http://secunia.com/advisories/37537 CVE, Inc., Red Hat Broken Link 
http://secunia.com/advisories/37925 CVE, Inc., Red Hat Broken Link 
http://secunia.com/advisories/38050 CVE, Inc., Red Hat Broken Link 
http://secunia.com/advisories/38231 CVE, Inc., Red Hat Broken Link 
http://secunia.com/advisories/38794 CVE, Inc., Red Hat Broken Link 
http://secunia.com/advisories/38832 CVE, Inc., Red Hat Broken Link 
http://secunia.com/advisories/38834 CVE, Inc., Red Hat Broken Link 
http://secunia.com/advisories/39478 CVE, Inc., Red Hat Broken Link 
http://secunia.com/advisories/41701 CVE, Inc., Red Hat Broken Link 
http://secunia.com/advisories/42326 CVE, Inc., Red Hat Broken Link 
http://secunia.com/advisories/42338 CVE, Inc., Red Hat Broken Link 
http://secunia.com/advisories/43300 CVE, Inc., Red Hat Broken Link 
http://slackware.com/security/viewer.php?l=slackware-security&y=2011&m=slackware-security.486026 CVE, Inc., Red Hat Mailing List  Third Party Advisory 
http://sourceforge.net/tracker/index.php?func=detail&aid=1990430&group_id=10127&atid=110127 CVE, Inc., Red Hat Mailing List  Third Party Advisory 
http://sunsolve.sun.com/search/document.do?assetkey=1-66-273630-1 CVE, Inc., Red Hat Broken Link 
http://svn.python.org/view?view=rev&revision=74429 CVE, Inc., Red Hat Permissions Required  Third Party Advisory 
http://www.mandriva.com/security/advisories?name=MDVSA-2009:211 CVE, Inc., Red Hat Permissions Required  Third Party Advisory 
http://www.mandriva.com/security/advisories?name=MDVSA-2009:212 CVE, Inc., Red Hat Broken Link 
http://www.mandriva.com/security/advisories?name=MDVSA-2009:215 CVE, Inc., Red Hat Broken Link 
http://www.mandriva.com/security/advisories?name=MDVSA-2009:216 CVE, Inc., Red Hat Broken Link 
http://www.mandriva.com/security/advisories?name=MDVSA-2009:217 CVE, Inc., Red Hat Broken Link 
http://www.mandriva.com/security/advisories?name=MDVSA-2009:218 CVE, Inc., Red Hat Broken Link 
http://www.mandriva.com/security/advisories?name=MDVSA-2009:219 CVE, Inc., Red Hat Broken Link 
http://www.mandriva.com/security/advisories?name=MDVSA-2009:220 CVE, Inc., Red Hat Broken Link 
http://www.openwall.com/lists/oss-security/2009/08/21/2 CVE, Inc., Red Hat Mailing List 
http://www.openwall.com/lists/oss-security/2009/08/26/3 CVE, Inc., Red Hat Mailing List 
http://www.openwall.com/lists/oss-security/2009/08/26/4 CVE, Inc., Red Hat Mailing List 
http://www.openwall.com/lists/oss-security/2009/08/27/6 CVE, Inc., Red Hat Mailing List 
http://www.openwall.com/lists/oss-security/2009/09/06/1 CVE, Inc., Red Hat Mailing List 
http://www.openwall.com/lists/oss-security/2009/10/22/5 CVE, Inc., Red Hat Mailing List 
http://www.openwall.com/lists/oss-security/2009/10/22/9 CVE, Inc., Red Hat Mailing List 
http://www.openwall.com/lists/oss-security/2009/10/23/2 CVE, Inc., Red Hat Mailing List 
http://www.openwall.com/lists/oss-security/2009/10/23/6 CVE, Inc., Red Hat Mailing List 
http://www.openwall.com/lists/oss-security/2009/10/26/3 CVE, Inc., Red Hat Mailing List 
http://www.openwall.com/lists/oss-security/2009/10/28/3 CVE, Inc., Red Hat Mailing List 
http://www.redhat.com/support/errata/RHSA-2010-0002.html CVE, Inc., Red Hat Broken Link 
http://www.redhat.com/support/errata/RHSA-2011-0896.html CVE, Inc., Red Hat Broken Link 
http://www.securitytracker.com/id?1023160 CVE, Inc., Red Hat Third Party Advisory  VDB Entry 
http://www.ubuntu.com/usn/USN-890-1 CVE, Inc., Red Hat Third Party Advisory 
http://www.ubuntu.com/usn/USN-890-6 CVE, Inc., Red Hat Third Party Advisory 
http://www.vupen.com/english/advisories/2010/0528 CVE, Inc., Red Hat Broken Link 
http://www.vupen.com/english/advisories/2010/0896 CVE, Inc., Red Hat Broken Link 
http://www.vupen.com/english/advisories/2010/1107 CVE, Inc., Red Hat Broken Link 
http://www.vupen.com/english/advisories/2010/3035 CVE, Inc., Red Hat Broken Link 
http://www.vupen.com/english/advisories/2010/3053 CVE, Inc., Red Hat Broken Link 
http://www.vupen.com/english/advisories/2010/3061 CVE, Inc., Red Hat Broken Link 
http://www.vupen.com/english/advisories/2011/0359 CVE, Inc., Red Hat Broken Link 
https://bugs.gentoo.org/show_bug.cgi?id=280615 CVE, Inc., Red Hat Third Party Advisory 
https://bugzilla.redhat.com/show_bug.cgi?id=531697 CVE, Inc., Red Hat Issue Tracking 
https://lists.apache.org/thread.html/54a42d4b01968df1117cea77fc53d6beb931c0e05936ad02af93e9ac%40%3Ccvs.httpd.apache.org%3E CVE, Inc., Red Hat Third Party Advisory 
https://lists.apache.org/thread.html/5df9bfb86a3b054bb985a45ff9250b0332c9ecc181eec232489e7f79%40%3Ccvs.httpd.apache.org%3E CVE, Inc., Red Hat Third Party Advisory 
https://lists.apache.org/thread.html/8d63cb8e9100f28a99429b4328e4e7cebce861d5772ac9863ba2ae6f%40%3Ccvs.httpd.apache.org%3E CVE, Inc., Red Hat Third Party Advisory 
https://lists.apache.org/thread.html/f7f95ac1cd9895db2714fa3ebaa0b94d0c6df360f742a40951384a53%40%3Ccvs.httpd.apache.org%3E CVE, Inc., Red Hat Third Party Advisory 
https://lists.apache.org/thread.html/r0276683d8e1e07153fc8642618830ac0ade85b9ae0dc7b07f63bb8fc%40%3Ccvs.httpd.apache.org%3E CVE, Inc., Red Hat Third Party Advisory 
https://lists.apache.org/thread.html/r2295080a257bad27ea68ca0af12fc715577f9e84801eae116a33107e%40%3Ccvs.httpd.apache.org%3E CVE, Inc., Red Hat Third Party Advisory 
https://lists.apache.org/thread.html/r2cb985de917e7da0848c440535f65a247754db8b2154a10089e4247b%40%3Ccvs.httpd.apache.org%3E CVE, Inc., Red Hat Third Party Advisory 
https://lists.apache.org/thread.html/r476d175be0aaf4a17680ef98c5153b4d336eaef76fb2224cc94c463a%40%3Ccvs.httpd.apache.org%3E CVE, Inc., Red Hat Third Party Advisory 
https://lists.apache.org/thread.html/r57608dc51b79102f3952ae06f54d5277b649c86d6533dcd6a7d201f7%40%3Ccvs.httpd.apache.org%3E CVE, Inc., Red Hat Third Party Advisory 
https://lists.apache.org/thread.html/r5f9c22f9c28adbd9f00556059edc7b03a5d5bb71d4bb80257c0d34e4%40%3Ccvs.httpd.apache.org%3E CVE, Inc., Red Hat Third Party Advisory 
https://lists.apache.org/thread.html/r75cbe9ea3e2114e4271bbeca7aff96117b50c1b6eb7c4772b0337c1f%40%3Ccvs.httpd.apache.org%3E CVE, Inc., Red Hat Third Party Advisory 
https://lists.apache.org/thread.html/r8828e649175df56f1f9e3919938ac7826128525426e2748f0ab62feb%40%3Ccvs.httpd.apache.org%3E CVE, Inc., Red Hat Third Party Advisory 
https://lists.apache.org/thread.html/r9e8622254184645bc963a1d47c5d47f6d5a36d6f080d8d2c43b2b142%40%3Ccvs.httpd.apache.org%3E CVE, Inc., Red Hat Third Party Advisory 
https://lists.apache.org/thread.html/r9ea3538f229874c80a10af473856a81fbf5f694cd7f471cc679ba70b%40%3Ccvs.httpd.apache.org%3E CVE, Inc., Red Hat Third Party Advisory 
https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E CVE, Inc., Red Hat Third Party Advisory 
https://lists.apache.org/thread.html/rad01d817195e6cc871cb1d73b207ca326379a20a6e7f30febaf56d24%40%3Ccvs.httpd.apache.org%3E CVE, Inc., Red Hat Third Party Advisory 
https://lists.apache.org/thread.html/rad2acee3ab838b52c04a0698b1728a9a43467bf365bd481c993c535d%40%3Ccvs.httpd.apache.org%3E CVE, Inc., Red Hat Third Party Advisory 
https://lists.apache.org/thread.html/rb9c9f42dafa25d2f669dac2a536a03f2575bc5ec1be6f480618aee10%40%3Ccvs.httpd.apache.org%3E CVE, Inc., Red Hat Third Party Advisory 
https://lists.apache.org/thread.html/rdca61ae990660bacb682295f2a09d34612b7bb5f457577fe17f4d064%40%3Ccvs.httpd.apache.org%3E CVE, Inc., Red Hat Third Party Advisory 
https://lists.apache.org/thread.html/reb7c64aeea604bf948467d9d1cab8ff23fa7d002be1964bcc275aae7%40%3Ccvs.httpd.apache.org%3E CVE, Inc., Red Hat Third Party Advisory 
https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E CVE, Inc., Red Hat Third Party Advisory 
https://lists.apache.org/thread.html/rfbaf647d52c1cb843e726a0933f156366a806cead84fbd430951591b%40%3Ccvs.httpd.apache.org%3E CVE, Inc., Red Hat Third Party Advisory 
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11019 CVE, Inc., Red Hat Broken Link 
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12719 CVE, Inc., Red Hat Broken Link 
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7112 CVE, Inc., Red Hat Mailing List  Third Party Advisory 
https://www.redhat.com/archives/fedora-package-announce/2009-December/msg00370.html CVE, Inc., Red Hat Third Party Advisory 
https://www.redhat.com/archives/fedora-package-announce/2009-December/msg00413.html CVE, Inc., Red Hat Third Party Advisory 
https://www.redhat.com/archives/fedora-package-announce/2009-December/msg01274.html CVE, Inc., Red Hat Third Party Advisory 

Weakness Enumeration

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

Known Affected Software Configurations Switch to CPE 2.2

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Change History

15 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2009-3720
NVD Published Date:
11/03/2009
NVD Last Modified:
04/08/2025
Source:
Red Hat, Inc.