{"id":"UBUNTU-CVE-2018-18820","details":"A buffer overflow was discovered in the URL-authentication backend of the Icecast before 2.4.4. If the backend is enabled, then any malicious HTTP client can send a request for that specific resource including a crafted header, leading to denial of service and potentially remote code execution.","modified":"2025-09-08T16:45:05Z","published":"2018-11-05T19:29:00Z","upstream":["CVE-2018-18820"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-18820"},{"type":"REPORT","url":"https://www.openwall.com/lists/oss-security/2018/11/01/3"},{"type":"REPORT","url":"https://gitlab.xiph.org/xiph/icecast-server/issues/2342"},{"type":"REPORT","url":"https://lgtm.com/blog/icecast_snprintf_CVE-2018-18820"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2018-18820"}],"affected":[{"package":{"name":"icecast2","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/icecast2@2.4.2-1ubuntu0.1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.2-1ubuntu0.1"}]}],"versions":["2.4.2-1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"icecast2","binary_version":"2.4.2-1ubuntu0.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-18820.json"}},{"package":{"name":"icecast2","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/icecast2@2.4.3-2ubuntu0.1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.3-2ubuntu0.1"}]}],"versions":["2.4.3-2"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"icecast2","binary_version":"2.4.3-2ubuntu0.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-18820.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}