{"id":"UBUNTU-CVE-2015-4054","details":"PgBouncer before 1.5.5 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) by sending a password packet before a startup packet.","modified":"2025-07-16T07:32:59.344713Z","published":"2017-05-23T04:29:00Z","withdrawn":"2025-07-18T16:43:13Z","upstream":["CVE-2015-4054"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2015-4054"},{"type":"REPORT","url":"https://github.com/pgbouncer/pgbouncer/issues/42"},{"type":"REPORT","url":"http://www.openwall.com/lists/oss-security/2015/05/21/2"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2015-4054"}],"affected":[{"package":{"name":"pgbouncer","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/pgbouncer@1.5.5-1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.5.5-1"}]}],"ecosystem_specific":{"binaries":[{"binary_name":"pgbouncer","binary_version":"1.5.5-1"},{"binary_name":"pgbouncer-dbgsym","binary_version":"1.5.5-1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2015/UBUNTU-CVE-2015-4054.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"}]}