{"id":"UBUNTU-CVE-2016-1983","details":"The client_host function in parsers.c in Privoxy before 3.0.24 allows remote attackers to cause a denial of service (invalid read and crash) via an empty HTTP Host header.","modified":"2025-07-16T07:34:08.807797Z","published":"2016-01-27T20:59:00Z","withdrawn":"2025-07-18T16:43:25Z","upstream":["CVE-2016-1983"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2016-1983"},{"type":"REPORT","url":"http://www.openwall.com/lists/oss-security/2016/01/21/4"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2016-1983"}],"affected":[{"package":{"name":"privoxy","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/privoxy@3.0.24-1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.24-1"}]}],"versions":["3.0.23-3","3.0.23-4","3.0.23-5"],"ecosystem_specific":{"binaries":[{"binary_name":"privoxy","binary_version":"3.0.24-1"},{"binary_name":"privoxy-dbgsym","binary_version":"3.0.24-1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-1983.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:H"},{"type":"Ubuntu","score":"medium"}]}