rh-postgresql95-postgresql is vulnerable to information disclosure attacks. The vulnerability exists as it was found that some selectivity estimation functions in PostgreSQL before 9.2.21, 9.3.x before 9.3.17, 9.4.x before 9.4.12, 9.5.x before 9.5.7, and 9.6.x before 9.6.3 did not check user privileges before providing information from pg_statistic, possibly leaking information. An unprivileged attacker could use this flaw to steal some information from tables they are otherwise not allowed to access.
access.redhat.com/errata/RHSA-2017:1677
access.redhat.com/security/updates/classification/#moderate
bugzilla.redhat.com/show_bug.cgi?id=1452734
www.postgresql.org/about/news/1746/
www.postgresql.org/docs/current/static/release-9-5-5.html
www.postgresql.org/docs/current/static/release-9-5-6.html
www.postgresql.org/docs/current/static/release-9-5-7.html