{"id":"CVE-2011-4905","aliases":["GHSA-9wcx-326r-7j7w"],"url":"https://o3.security/vulnerability/CVE-2011-4905","summary":"Denial of Service in Apache ActiveMQ","details":"Apache ActiveMQ before 5.6.0 allows remote attackers to cause a denial of service (file-descriptor exhaustion and broker crash or hang) by sending many openwire failover:tcp:// connection requests.","published":"2012-01-05T16:55:00Z","modified":"2026-04-10T03:44:09.991988Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"Maven","name":"org.apache.activemq:activemq-core","fixedVersion":"5.6.0"}],"fix":{"url":"https://github.com/apache/activemq/commit/3a71f8e33d0309cb0ca5b5758a8f251da205e757","label":"apache/activemq@3a71f8e"},"references":[{"type":"ADVISORY","url":"http://secunia.com/advisories/47112"},{"type":"EVIDENCE","url":"https://issues.apache.org/jira/browse/AMQ-3294"},{"type":"WEB","url":"http://openwall.com/lists/oss-security/2011/12/25/2"},{"type":"WEB","url":"http://openwall.com/lists/oss-security/2011/12/25/6"},{"type":"WEB","url":"http://svn.apache.org/viewvc?view=revision&revision=1209700"},{"type":"WEB","url":"http://svn.apache.org/viewvc?view=revision&revision=1211844"},{"type":"WEB","url":"http://www.securityfocus.com/bid/50904"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2011-4905"},{"type":"WEB","url":"https://github.com/apache/activemq/commit/3a71f8e33d0309cb0ca5b5758a8f251da205e757"},{"type":"WEB","url":"https://github.com/apache/activemq/commit/9df9d3e89140b7329654ad5675259ec6f0c4b3a7"},{"type":"WEB","url":"https://github.com/apache/activemq/commit/da7f9962c640666a743675085922bf75a656f81b"},{"type":"WEB","url":"https://github.com/apache/activemq"},{"type":"WEB","url":"https://issues.apache.org/jira/browse/AMQ-1928"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-04-10T03:44:09.991988Z"}}