{"id":"UBUNTU-CVE-2011-4461","details":"Jetty 8.1.0.RC2 and earlier computes hash values for form parameters without restricting the ability to trigger hash collisions predictably, which allows remote attackers to cause a denial of service (CPU consumption) by sending many crafted parameters.","modified":"2026-02-04T04:15:51.938399Z","published":"2011-12-29T00:00:00Z","withdrawn":"2025-07-18T16:42:44Z","related":["USN-1429-1"],"upstream":["CVE-2011-4461"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2011-4461"},{"type":"REPORT","url":"http://www.kb.cert.org/vuls/id/903934"},{"type":"REPORT","url":"http://www.ocert.org/advisories/ocert-2011-003.html"},{"type":"REPORT","url":"http://www.nruns.com/_downloads/advisory28122011.pdf"},{"type":"REPORT","url":"http://dev.eclipse.org/mhonarc/lists/jetty-users/msg01818.html"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-1429-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2011-4461"}],"affected":[{"package":{"name":"jetty","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/jetty@6.1.26-1ubuntu1?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.26-1ubuntu1"}]}],"ecosystem_specific":{"binaries":[{"binary_name":"jetty","binary_version":"6.1.26-1ubuntu1"},{"binary_name":"libjetty-extra","binary_version":"6.1.26-1ubuntu1"},{"binary_name":"libjetty-extra-java","binary_version":"6.1.26-1ubuntu1"},{"binary_name":"libjetty-java","binary_version":"6.1.26-1ubuntu1"},{"binary_name":"libjetty-java-doc","binary_version":"6.1.26-1ubuntu1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2011/UBUNTU-CVE-2011-4461.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"type":"Ubuntu","score":"medium"}]}