Two security issues have been fixed in this release which affect users
of specific PostgreSQL features:
CVE-2015-5289: json or jsonb input values constructed from arbitrary
user input can crash the PostgreSQL server and cause a denial of
service.
CVE-2015-5288: The crypt( function included with the optional pgCrypto
extension could be exploited to read a few additional bytes of memory.
No working exploit for this issue has been developed.
This update will also disable SSL renegotiation by default;
previously, it was enabled by default. SSL renegotiation will be
removed entirely in PostgreSQL versions 9.5 and later.
URL: http://www.postgresql.org/about/news/1615/
Security: CVE-2015-5288 CVE-2015-5289