{"id":"UBUNTU-CVE-2016-5423","details":"PostgreSQL before 9.1.23, 9.2.x before 9.2.18, 9.3.x before 9.3.14, 9.4.x before 9.4.9, and 9.5.x before 9.5.4 allow remote authenticated users to cause a denial of service (NULL pointer dereference and server crash), obtain sensitive memory information, or possibly execute arbitrary code via (1) a CASE expression within the test value subexpression of another CASE or (2) inlining of an SQL function that implements the equality operator used for a CASE expression involving values of different types.","modified":"2026-04-22T10:52:06.919008Z","published":"2016-08-11T00:00:00Z","related":["USN-3066-1"],"upstream":["CVE-2016-5423"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2016-5423"},{"type":"REPORT","url":"https://www.postgresql.org/about/news/1688/"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3066-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2016-5423"}],"affected":[{"package":{"name":"postgresql-9.1","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/postgresql-9.1@9.1.23-0ubuntu0.14.04?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.1.23-0ubuntu0.14.04"}]}],"versions":["9.1.10-1","9.1.10-1bzr1","9.1.11-1","9.1.11-2","9.1.12-1","9.1.13-1","9.1.14-0ubuntu0.14.04","9.1.15-0ubuntu0.14.04","9.1.16-0ubuntu0.14.04","9.1.17-0ubuntu0.14.04","9.1.18-0ubuntu0.14.04","9.1.19-0ubuntu0.14.04","9.1.20-0ubuntu0.14.04","9.1.21-0ubuntu0.14.04","9.1.22-0ubuntu0.14.04"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"postgresql-plperl-9.1","binary_version":"9.1.23-0ubuntu0.14.04"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-5423.json"}},{"package":{"name":"postgresql-9.3","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/postgresql-9.3@9.3.14-0ubuntu0.14.04?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.3.14-0ubuntu0.14.04"}]}],"versions":["9.3.1-1","9.3.2-1","9.3.2-1ubuntu1","9.3.2-1ubuntu2","9.3.3-1","9.3.3-1bzr1","9.3.3-1bzr2","9.3.4-1","9.3.5-0ubuntu0.14.04.1","9.3.6-0ubuntu0.14.04","9.3.7-0ubuntu0.14.04","9.3.8-0ubuntu0.4.04","9.3.9-0ubuntu0.14.04","9.3.10-0ubuntu0.14.04","9.3.11-0ubuntu0.14.04","9.3.12-0ubuntu0.14.04","9.3.13-0ubuntu0.14.04"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libecpg-compat3","binary_version":"9.3.14-0ubuntu0.14.04"},{"binary_name":"libecpg6","binary_version":"9.3.14-0ubuntu0.14.04"},{"binary_name":"libpgtypes3","binary_version":"9.3.14-0ubuntu0.14.04"},{"binary_name":"libpq5","binary_version":"9.3.14-0ubuntu0.14.04"},{"binary_name":"postgresql-9.3","binary_version":"9.3.14-0ubuntu0.14.04"},{"binary_name":"postgresql-client-9.3","binary_version":"9.3.14-0ubuntu0.14.04"},{"binary_name":"postgresql-contrib-9.3","binary_version":"9.3.14-0ubuntu0.14.04"},{"binary_name":"postgresql-doc-9.3","binary_version":"9.3.14-0ubuntu0.14.04"},{"binary_name":"postgresql-plperl-9.3","binary_version":"9.3.14-0ubuntu0.14.04"},{"binary_name":"postgresql-plpython-9.3","binary_version":"9.3.14-0ubuntu0.14.04"},{"binary_name":"postgresql-plpython3-9.3","binary_version":"9.3.14-0ubuntu0.14.04"},{"binary_name":"postgresql-pltcl-9.3","binary_version":"9.3.14-0ubuntu0.14.04"},{"binary_name":"postgresql-server-dev-9.3","binary_version":"9.3.14-0ubuntu0.14.04"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-5423.json"}},{"package":{"name":"postgresql-9.5","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/postgresql-9.5@9.5.4-0ubuntu0.16.04?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.5.4-0ubuntu0.16.04"}]}],"versions":["9.5.0-1","9.5.0-2","9.5.0-3","9.5.1-1","9.5.2-1","9.5.3-0ubuntu0.16.04"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libecpg-compat3","binary_version":"9.5.4-0ubuntu0.16.04"},{"binary_name":"libecpg6","binary_version":"9.5.4-0ubuntu0.16.04"},{"binary_name":"libpgtypes3","binary_version":"9.5.4-0ubuntu0.16.04"},{"binary_name":"libpq5","binary_version":"9.5.4-0ubuntu0.16.04"},{"binary_name":"postgresql-9.5","binary_version":"9.5.4-0ubuntu0.16.04"},{"binary_name":"postgresql-client-9.5","binary_version":"9.5.4-0ubuntu0.16.04"},{"binary_name":"postgresql-contrib-9.5","binary_version":"9.5.4-0ubuntu0.16.04"},{"binary_name":"postgresql-doc-9.5","binary_version":"9.5.4-0ubuntu0.16.04"},{"binary_name":"postgresql-plperl-9.5","binary_version":"9.5.4-0ubuntu0.16.04"},{"binary_name":"postgresql-plpython-9.5","binary_version":"9.5.4-0ubuntu0.16.04"},{"binary_name":"postgresql-plpython3-9.5","binary_version":"9.5.4-0ubuntu0.16.04"},{"binary_name":"postgresql-pltcl-9.5","binary_version":"9.5.4-0ubuntu0.16.04"},{"binary_name":"postgresql-server-dev-9.5","binary_version":"9.5.4-0ubuntu0.16.04"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-5423.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}