VULNERABILITY INTELLIGENCE
CVE-2009-1955
CVSS score7.5 HIGH
EPSS probability52.99%
CISA KEVNot currently listed
Published2009-06-08
Last modified2026-06-16
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Description
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.
Weakness classification
- CWE-776: Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')
Primary references
- cve@mitre.org — Mailing List, Third Party Advisory
- cve@mitre.org — Mailing List, Third Party Advisory
- cve@mitre.org — Mailing List, Patch
- cve@mitre.org — Mailing List
- cve@mitre.org — Broken Link, Third Party Advisory
- cve@mitre.org — Broken Link, Third Party Advisory
- cve@mitre.org — Broken Link, Third Party Advisory
- cve@mitre.org — Broken Link, Third Party Advisory
- cve@mitre.org — Broken Link, Third Party Advisory
- cve@mitre.org — Broken Link, Third Party Advisory
- cve@mitre.org — Broken Link, Third Party Advisory
- cve@mitre.org — Broken Link, Third Party Advisory