{"id":"UBUNTU-CVE-2016-8734","details":"Apache Subversion's mod_dontdothat module and HTTP clients 1.4.0 through 1.8.16, and 1.9.0 through 1.9.4 are vulnerable to a denial-of-service attack caused by exponential XML entity expansion. The attack can cause the targeted process to consume an excessive amount of CPU resources or memory.","modified":"2026-04-22T11:42:38.839078Z","published":"2016-11-30T00:00:00Z","related":["USN-3388-1"],"upstream":["CVE-2016-8734"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2016-8734"},{"type":"REPORT","url":"https://subversion.apache.org/security/CVE-2016-8734-advisory.txt"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3388-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2016-8734"}],"affected":[{"package":{"name":"subversion","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/subversion@1.8.8-1ubuntu3.3?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.8.8-1ubuntu3.3"}]}],"versions":["1.7.9-1+nmu6ubuntu3","1.7.13-2ubuntu1","1.7.13-2ubuntu2","1.7.13-2ubuntu3","1.7.14-1ubuntu2","1.8.5-2ubuntu3","1.8.8-1ubuntu2","1.8.8-1ubuntu3","1.8.8-1ubuntu3.1","1.8.8-1ubuntu3.2"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libapache2-mod-svn","binary_version":"1.8.8-1ubuntu3.3"},{"binary_name":"libapache2-svn","binary_version":"1.8.8-1ubuntu3.3"},{"binary_name":"libsvn-java","binary_version":"1.8.8-1ubuntu3.3"},{"binary_name":"libsvn-perl","binary_version":"1.8.8-1ubuntu3.3"},{"binary_name":"libsvn-ruby1.8","binary_version":"1.8.8-1ubuntu3.3"},{"binary_name":"libsvn1","binary_version":"1.8.8-1ubuntu3.3"},{"binary_name":"python-subversion","binary_version":"1.8.8-1ubuntu3.3"},{"binary_name":"ruby-svn","binary_version":"1.8.8-1ubuntu3.3"},{"binary_name":"subversion","binary_version":"1.8.8-1ubuntu3.3"},{"binary_name":"subversion-tools","binary_version":"1.8.8-1ubuntu3.3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-8734.json"}},{"package":{"name":"subversion","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/subversion@1.9.3-2ubuntu1.1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.9.3-2ubuntu1.1"}]}],"versions":["1.8.13-1ubuntu3","1.9.2-3ubuntu1","1.9.2-3ubuntu2","1.9.3-1ubuntu1","1.9.3-2ubuntu1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libapache2-mod-svn","binary_version":"1.9.3-2ubuntu1.1"},{"binary_name":"libapache2-svn","binary_version":"1.9.3-2ubuntu1.1"},{"binary_name":"libsvn-java","binary_version":"1.9.3-2ubuntu1.1"},{"binary_name":"libsvn-perl","binary_version":"1.9.3-2ubuntu1.1"},{"binary_name":"libsvn-ruby1.8","binary_version":"1.9.3-2ubuntu1.1"},{"binary_name":"libsvn1","binary_version":"1.9.3-2ubuntu1.1"},{"binary_name":"python-subversion","binary_version":"1.9.3-2ubuntu1.1"},{"binary_name":"ruby-svn","binary_version":"1.9.3-2ubuntu1.1"},{"binary_name":"subversion","binary_version":"1.9.3-2ubuntu1.1"},{"binary_name":"subversion-tools","binary_version":"1.9.3-2ubuntu1.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-8734.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"low"}]}