CVE-2009-3720
MEDIUM severity · CVSS 5
5CVSS MEDIUM
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges required—
User interaction—
Confidentiality impactNone
Integrity impactNone
Availability impact—
Exploit probability (EPSS)28%
AV:N/AC:L/Au:N/C:N/I:N/A:P
Affected products we track (2)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Additional information
- NVD record
- http://expat.cvs.sourceforge.net/viewvc/expat/expat/lib/xmltok_impl.c?view=logAdvisory
- http://lists.fedoraproject.org/pipermail/package-announce/2010-November/051228.htmlAdvisory
- http://lists.fedoraproject.org/pipermail/package-announce/2010-November/051247.htmlAdvisory
- http://lists.fedoraproject.org/pipermail/package-announce/2010-November/051367.htmlAdvisory
- http://lists.fedoraproject.org/pipermail/package-announce/2010-November/051405.htmlAdvisory
- http://lists.fedoraproject.org/pipermail/package-announce/2010-November/051442.htmlAdvisory
- http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00004.htmlAdvisory
- http://expat.cvs.sourceforge.net/viewvc/expat/expat/lib/xmltok_impl.c?r1=1.13&r2=1.15&view=patchExploit