Vulnerability 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 Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Apache | Apr-Util | < 1.3.7 |
| Apple | Mac Os X | < 10.6.2 |
| Suse | Linux Enterprise Server | 9 |
| Debian | Debian Linux | 4.0 |
| Canonical | Ubuntu Linux | 6.06 |
| Fedoraproject | Fedora | 9 |
| Oracle | Http Server | - |
| Apache | Http Server | >= 2.2.0, < 2.2.12 |
Related Weaknesses (CWE)
References
- http://lists.apple.com/archives/security-announce/2009/Nov/msg00000.htmlMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2010-05/msg00001.htmlMailing ListThird Party Advisory
- http://marc.info/?l=apr-dev&m=124396021826125&w=2Mailing ListPatch
- http://marc.info/?l=bugtraq&m=129190899612998&w=2Mailing List
- http://secunia.com/advisories/34724Broken LinkThird Party Advisory
- http://secunia.com/advisories/35284Broken LinkThird Party Advisory
- http://secunia.com/advisories/35360Broken LinkThird Party Advisory
- http://secunia.com/advisories/35395Broken LinkThird Party Advisory
- http://secunia.com/advisories/35444Broken LinkThird Party Advisory
- http://secunia.com/advisories/35487Broken LinkThird Party Advisory
- http://secunia.com/advisories/35565Broken LinkThird Party Advisory
- http://secunia.com/advisories/35710Broken LinkThird Party Advisory
- http://secunia.com/advisories/35797Broken LinkThird Party Advisory
- http://secunia.com/advisories/35843Broken LinkThird Party Advisory
- http://secunia.com/advisories/36473Broken LinkThird Party Advisory
FAQ
What is CVE-2009-1955?
CVE-2009-1955 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 c...
How severe is CVE-2009-1955?
CVE-2009-1955 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2009-1955?
Check the references section above for vendor advisories and patch information. Affected products include: Apache Apr-Util, Apple Mac Os X, Suse Linux Enterprise Server, Debian Debian Linux, Canonical Ubuntu Linux.