High severity · published Jun 8, 2009
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…
7.5
CVSS
53%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)53.0% · higher than 99% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
HS
HTTP Server · Apache
2.2.0 before 2.2.12 · source: NVD
AP
Apr-util · Apache
before 1.3.7 · source: NVD
DL
Debian Linux · Debian
4.0 · source: NVD
FE
Fedora · Fedoraproject
9; 10; 11 · source: NVD
LE
Linux Enterprise Server · Suse
9 · source: NVD
MO
Mac OS X · Apple
before 10.6.2 · source: NVD
UL
Ubuntu Linux · Canonical
6.06; 8.04; 8.10; 9.04 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2009-1955
CVE.org
https://www.cve.org/CVERecord?id=CVE-2009-1955
Mailing List
http://lists.apple.com/archives/security-announce/2009/Nov/msg00000.html
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2010-05/msg00001.html
Mailing List
http://marc.info/?l=apr-dev&m=124396021826125&w=2
Mailing List
http://marc.info/?l=bugtraq&m=129190899612998&w=2
Broken Link
http://secunia.com/advisories/34724
Broken Link
http://secunia.com/advisories/35284
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