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CVE-2009-1955

Published: Jun 6, 2009Updated: Apr 23, 2026 Sources: CVE List NVDCWE-776
7.5HIGH
NVD MITRE
EPSS Score
53.0%
Top 1.1%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
Patch Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-776

Affected Products

apache
oss-project·USaka apache http server, apache httpd
apr-util
OSS Libraries / generic-library
http serverOn-premWeb App
Networking Infrastructure / load-balancer-proxy
apple
commercial·USaka apple computer, apple inc.
mac os xOn-premOS
Operating Systems / unix-bsd
suse
commercial·DE
linux enterprise serverOn-premOS
Operating Systems / linux-distro
debian
oss-project·GBaka debian gnu/linux
debian linuxOn-premOS
Operating Systems / linux-distro
canonical
commercial·GBaka canonical ltd.
ubuntu linuxOn-premOS
Operating Systems / linux-distro
fedoraproject
oss-project·USaka fedora project
fedoraOn-premOS
Operating Systems / linux-distro
and 2 more affected products View all →

Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

http://secunia.com/advisories/35487
secunia.com
http://www.debian.org/security/2009/dsa-1812
debian.org
http://www.apache.org/dist/apr/CHANGES-APR-UTIL-1.3
apache.org
and 57 more references View all →

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