{"id":"UBUNTU-CVE-2013-5705","details":"apache2/modsecurity.c in ModSecurity before 2.7.6 allows remote attackers to bypass rules by using chunked transfer coding with a capitalized Chunked value in the Transfer-Encoding HTTP header.","modified":"2025-07-16T07:17:09.962960Z","published":"2014-04-15T10:55:00Z","withdrawn":"2025-07-18T16:42:56Z","upstream":["CVE-2013-5705"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2013-5705"},{"type":"REPORT","url":"http://martin.swende.se/blog/HTTPChunked.html"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2013-5705"}],"affected":[{"package":{"name":"modsecurity-apache","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/modsecurity-apache@2.7.7-2?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.7-2"}]}],"versions":["2.7.4-1","2.7.5-1","2.7.7-1","2.7.7-1ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"libapache2-mod-security2","binary_version":"2.7.7-2"},{"binary_name":"libapache2-modsecurity","binary_version":"2.7.7-2"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2013/UBUNTU-CVE-2013-5705.json"}}],"schema_version":"1.7.3","severity":[{"type":"Ubuntu","score":"medium"}]}