XXE in Apache Apr-util
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 consum…
EPSS: 0.530 (98.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 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.
Affected products
- Apache Apr-util
- Apache Http_server
- Apple Mac_os_x
- Oracle Http_server
- Canonical Ubuntu_linux — versions 6.06, 8.04, 8.10
- Debian Debian_linux — versions 4.0
- Fedoraproject Fedora — versions 9, 10, 11
- Suse Linux_enterprise_server — versions 9
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (x_refsource_SECUNIA, Third Party Advisory, Broken Link, third-party-advisory)
- cve@mitre.org (vendor-advisory, Mailing List, Third Party Advisory, x_refsource_DEBIAN)
- cve@mitre.org (x_refsource_CONFIRM, Broken Link)
- cve@mitre.org (Third Party Advisory, vdb-entry, Broken Link, x_refsource_VUPEN)
- cve@mitre.org (vendor-advisory, x_refsource_FEDORA, Mailing List)
- cve@mitre.org (x_refsource_SECUNIA, Third Party Advisory, Broken Link, third-party-advisory)
- cve@mitre.org (mailing-list, x_refsource_MLIST, Patch, Mailing List)
- cve@mitre.org (vendor-advisory, Third Party Advisory, x_refsource_MANDRIVA, Broken Link)
- cve@mitre.org (Broken Link, signature, x_refsource_OVAL, Third Party Advisory, vdb-entry)
- cve@mitre.org (x_refsource_SECUNIA, Third Party Advisory, Broken Link, third-party-advisory)
Frequently asked questions
- What is CVE-2009-1955?
- CVE-2009-1955 is a high-severity vulnerability in Apache Apr-util, classified under Improper Restriction of Recursive Entity References in DTDs (XML Entity Expansion). CVSS score: 7.5/10. Published 2009-06-08.
- How severe is CVE-2009-1955?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2009-1955 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.