CVE DATABASE / CVE-2009-1955
CVE-2009-1955
CVSS 7.5 · HIGH
Summary
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 3.1 breakdown
| Base score | 7.5 (HIGH) |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| Attack vector | NETWORK |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity | NONE |
| Availability | HIGH |
Weakness type (CWE)
Affected products
Apache apr-utilApple mac os xSuse linux enterprise serverDebian debian linuxCanonical ubuntu linuxFedoraproject fedoraOracle http serverApache http server
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References
- http://lists.apple.com/archives/security-announce/2009/Nov/msg00000.html
- http://lists.opensuse.org/opensuse-security-announce/2010-05/msg00001.html
- http://marc.info/?l=apr-dev&m=124396021826125&w=2
- http://marc.info/?l=bugtraq&m=129190899612998&w=2
- http://secunia.com/advisories/34724
- http://secunia.com/advisories/35284
- http://secunia.com/advisories/35360
- http://secunia.com/advisories/35395
- http://secunia.com/advisories/35444
- http://secunia.com/advisories/35487
- http://secunia.com/advisories/35565
- http://secunia.com/advisories/35710
- http://secunia.com/advisories/35797
- http://secunia.com/advisories/35843
- http://secunia.com/advisories/36473
Data: NIST NVD. NVD last modified 2026-04-23. Always verify against the vendor advisory before acting.