Vulnerability identifier: #VU40402

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-2193

CWE-ID: CWE-254

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
PostgreSQL
Server applications / Database software

Vendor: PostgreSQL Global Development Group

Description

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.

Mitigation
Install update from vendor's website.

Vulnerable software versions

PostgreSQL: 9.5 - 9.5.1

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External links
http://git.postgresql.org/gitweb/?p=postgresql.git;a=commitdiff;h=db69e58a0642ef7fa46d62f6c4cf2460c3a1b41b
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

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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