{"id":"DEBIAN-CVE-2009-1955","details":"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.","modified":"2026-09-11T07:00:30.105654252Z","published":"2009-06-08T01:00:00.687Z","upstream":["CVE-2009-1955"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2009-1955"}],"affected":[{"package":{"name":"apr-util","ecosystem":"Debian:12","purl":"pkg:deb/debian/apr-util?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.7+dfsg-1"}]}],"ecosystem_specific":{"urgency":"medium"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2009-1955.json"}},{"package":{"name":"apr-util","ecosystem":"Debian:13","purl":"pkg:deb/debian/apr-util?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.7+dfsg-1"}]}],"ecosystem_specific":{"urgency":"medium"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2009-1955.json"}},{"package":{"name":"apr-util","ecosystem":"Debian:14","purl":"pkg:deb/debian/apr-util?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.7+dfsg-1"}]}],"ecosystem_specific":{"urgency":"medium"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2009-1955.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}