Vulnerability Monitor

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CVE-2009-1955

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.

Published

2009-06-08T01:00:00.687

Last Modified

2025-04-09T00:30:58.490

Status

Deferred

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: PARTIAL
Exploitability Score

10.0

Impact Score

2.9

Weaknesses
  • Type: Primary
    CWE-776
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application apache apr-util < 1.3.7 Yes
Operating System apple mac_os_x < 10.6.2 Yes
Operating System suse linux_enterprise_server 9 Yes
Operating System debian debian_linux 4.0 Yes
Operating System canonical ubuntu_linux 6.06 Yes
Operating System canonical ubuntu_linux 8.04 Yes
Operating System canonical ubuntu_linux 8.10 Yes
Operating System canonical ubuntu_linux 9.04 Yes
Operating System fedoraproject fedora 9 Yes
Operating System fedoraproject fedora 10 Yes
Operating System fedoraproject fedora 11 Yes
Application oracle http_server - Yes
Application apache http_server < 2.2.12 Yes
References