Vulnerability in A M Kuchling Pyxml
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 UTF-8 sequences that trigger a buffer over-read, a different vulnerability than CVE-2009-2625.
Published · last modified .
CVSS v2 metric
CVSS v2 base score 5.0 (Medium). Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.279 (98.1th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.279 · newest: 0.279 · change: 0.000
Affected products
Public proof-of-concept exploits
References
- slackware.com/security/viewer.php (vendor-advisory, Mailing List, Third Party Advisory)
- svn.python.org/view (Permissions Required, Third Party Advisory)
- www.mandriva.com/security/advisories (vendor-advisory, Broken Link)
- lists.fedoraproject.org/pipermail/package-announce/2010-November/051442.html (vendor-advisory, Third Party Advisory)
- www.redhat.com/archives/fedora-package-announce/2009-December/msg01274.html (vendor-advisory, Third Party Advisory)
- www.redhat.com/archives/fedora-package-announce/2009-December/msg00370.html (vendor-advisory, Third Party Advisory)
- secunia.com/advisories/38832 (Broken Link, third-party-advisory)
- www.redhat.com/support/errata/RHSA-2010-0002.html (vendor-advisory, Broken Link)
- www.mandriva.com/security/advisories (vendor-advisory, Broken Link)
- www.ubuntu.com/usn/USN-890-1 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2009-3720?
- CVE-2009-3720 is a vulnerability in A M Kuchling Pyxml. Published 2009-11-03.
- Is CVE-2009-3720 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.