CVE-2009-1955
HIGH severity · CVSS 7.5 · CWE-776
7.5CVSS HIGH
Summary
The expat XML parser in the apr_xml_* interface in xml/apr_xml.c in Apache APR-util before 1.3.7, as used in the mod_dav and mod_dav_svn modules in the Apache HTTP Server, allows remote attackers to cause a denial of service (memory consumption) via a crafted XML document containing a large number of nested entity references, as demonstrated by a PROPFIND request, a similar issue to CVE-2003-1564.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)53%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products we track (2)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: http://marc.info/?l=apr-dev&m=124396021826125&w=2 ↗
Additional information
- NVD record
- http://marc.info/?l=apr-dev&m=124396021826125&w=2Patch
- http://lists.apple.com/archives/security-announce/2009/Nov/msg00000.htmlAdvisory
- http://lists.opensuse.org/opensuse-security-announce/2010-05/msg00001.htmlAdvisory
- http://marc.info/?l=bugtraq&m=129190899612998&w=2
- http://secunia.com/advisories/34724Advisory
- http://secunia.com/advisories/35284Advisory
- http://secunia.com/advisories/35360Advisory
- http://secunia.com/advisories/35395Advisory