CVE-2009-3720
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…
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 27.9%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
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.
- CVSS 2.0
- 5.0 MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P
- EPSS
- 27.92% probability · 98th percentile
- CISA KEV
- Not listed
- Affected
- libexpat project/libexpat · apache/http server
- Source
- secalert@redhat.com
References
- http://expat.cvs.sourceforge.net/viewvc/expat/expat/lib/xmltok_impl.c?r1=1.13&r2=1.15&view=patchExploit
- http://expat.cvs.sourceforge.net/viewvc/expat/expat/lib/xmltok_impl.c?view=logMailing List, Third Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2010-November/051228.htmlThird Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2010-November/051247.htmlMailing List, Third Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2010-November/051367.htmlThird Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2010-November/051405.htmlThird Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2010-November/051442.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00004.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2010-05/msg00001.htmlThird Party Advisory, VDB Entry
- http://lists.opensuse.org/opensuse-security-announce/2010-05/msg00002.htmlThird Party Advisory, VDB Entry
- http://lists.opensuse.org/opensuse-security-announce/2010-06/msg00001.htmlThird Party Advisory, VDB Entry
- http://lists.opensuse.org/opensuse-security-announce/2010-08/msg00001.htmlThird Party Advisory, VDB Entry
- http://lists.vmware.com/pipermail/security-announce/2010/000082.htmlBroken Link
- http://mail.python.org/pipermail/expat-bugs/2009-January/002781.htmlThird Party Advisory
- http://marc.info/?l=bugtraq&m=130168502603566&w=2Mailing List, Third Party Advisory
- http://secunia.com/advisories/37324Broken Link
- http://secunia.com/advisories/37537Broken Link
- http://secunia.com/advisories/37925Broken Link
- http://secunia.com/advisories/38050Broken Link
- http://secunia.com/advisories/38231Broken Link
- http://secunia.com/advisories/38794Broken Link
- http://secunia.com/advisories/38832Broken Link
- http://secunia.com/advisories/38834Broken Link
- http://secunia.com/advisories/39478Broken Link
- http://secunia.com/advisories/41701Broken Link
- http://secunia.com/advisories/42326Broken Link
- http://secunia.com/advisories/42338Broken Link
- http://secunia.com/advisories/43300Broken Link
- http://slackware.com/security/viewer.php?l=slackware-security&y=2011&m=slackware-security.486026Mailing List, Third Party Advisory
- http://sourceforge.net/tracker/index.php?func=detail&aid=1990430&group_id=10127&atid=110127Mailing List, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.