Permissions, Privileges, and Access Controls in PostgreSQL

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU32338

Risk: High

CVSSv4.0: 6.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2016-0766

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

Exploit availability: No

Description

The vulnerability allows a remote authenticated user to execute arbitrary code.

PostgreSQL before 9.1.20, 9.2.x before 9.2.15, 9.3.x before 9.3.11, 9.4.x before 9.4.6, and 9.5.x before 9.5.1 does not properly restrict access to unspecified custom configuration settings (GUCS) for PL/Java, which allows attackers to gain privileges via unspecified vectors.

Mitigation

Install update from vendor's website.

Vulnerable software versions

PostgreSQL: 9.1.0 - 9.5.0

CPE2.3

• cpe:2.3:a:postgresql_global_development_group:postgresql:9.1.19:*:*:*:*:*:*:*
• cpe:2.3:a:postgresql_global_development_group:postgresql:9.2.14:*:*:*:*:*:*:*
• cpe:2.3:a:postgresql_global_development_group:postgresql:9.3.10:*:*:*:*:*:*:*
• cpe:2.3:a:postgresql_global_development_group:postgresql:9.4.5:*:*:*:*:*:*:*
• cpe:2.3:a:postgresql_global_development_group:postgresql:9.5.0:*:*:*:*:*:*:*

External links

https://lists.opensuse.org/opensuse-security-announce/2016-02/msg00049.html
https://lists.opensuse.org/opensuse-security-announce/2016-02/msg00052.html
https://lists.opensuse.org/opensuse-security-announce/2016-02/msg00054.html
https://lists.opensuse.org/opensuse-security-announce/2016-02/msg00056.html
https://lists.opensuse.org/opensuse-security-announce/2016-03/msg00016.html
https://www.debian.org/security/2016/dsa-3475
https://www.debian.org/security/2016/dsa-3476
https://www.postgresql.org/about/news/1644/
https://www.postgresql.org/docs/current/static/release-9-1-20.html
https://www.postgresql.org/docs/current/static/release-9-2-15.html
https://www.postgresql.org/docs/current/static/release-9-3-11.html
https://www.postgresql.org/docs/current/static/release-9-4-6.html
https://www.postgresql.org/docs/current/static/release-9-5-1.html
https://www.securityfocus.com/bid/83184
https://www.securitytracker.com/id/1035005
https://www.ubuntu.com/usn/USN-2894-1
https://security.gentoo.org/glsa/201701-33

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.