SB2016041114 - Multiple vulnerabilities in PostgreSQL

Description

This security bulletin contains information about 2 vulnerabilities.

1) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2016-3065)

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber

The vulnerability allows a remote non-authenticated attacker to #BASIC_IMPACT#.

The (1) brin_page_type and (2) brin_metapage_info functions in the pageinspect extension in PostgreSQL before 9.5.x before 9.5.2 allows attackers to bypass intended access restrictions and consequently obtain sensitive server memory information or cause a denial of service (server crash) via a crafted bytea value in a BRIN index page.

2) Security Features (CVE-ID: CVE-2016-2193)

CWE-ID: CWE-254 - Security Features

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote non-authenticated attacker to manipulate data.

PostgreSQL before 9.5.x before 9.5.2 does not properly maintain row-security status in cached plans, which might allow attackers to bypass intended access restrictions by leveraging a session that performs queries as more than one role.

Remediation

Install update from vendor's website.

References

• http://git.postgresql.org/gitweb/?p=postgresql.git;a=commitdiff;h=bf78a6f107949fdfb513d1b45e30cefe04e09e4f
• http://www.postgresql.org/about/news/1656/
• http://www.postgresql.org/docs/current/static/release-9-5-2.html
• http://www.securitytracker.com/id/1035468
• http://git.postgresql.org/gitweb/?p=postgresql.git;a=commitdiff;h=db69e58a0642ef7fa46d62f6c4cf2460c3a1b41b