View at Official ubuntu advisory, NVD, CVE.org · CVE detail
Freshness: upstream tracker timestamp is available; use API updated time as primary recency signal.
CVE-2016-5423 medium priority: Ubuntu including 4 source packages (postgresql-8.4, postgresql-9.1, postgresql-9.3, postgresql-9.5), 24 status rows across 6 suites (precise, trusty, upstream, xenial, yakkety, zesty): DNE 14, released 7, ignored 1, needs-triage 1, not-affected 1.
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.