#VU314 Arbitrary code execution in PostgreSQL and Oracle Linux - CVE-2016-5423

Vulnerability identifier: #VU314

Vulnerability risk: Critical

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Red]

CVE-ID: CVE-2016-5423

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
PostgreSQL
Server applications / Database software
Oracle Linux
Operating systems & Components / Operating system

Vendor: PostgreSQL Global Development Group
Oracle

Description
The vulnerability allows a remote attacker to execute arbitrary code,

The vulnerability exists in PostgreSQL. A remote authenticated attacker can cause the target server to crash, disclose portions of server memory, or potentially execute arbitrary code by submiting specially crafted SQL statements containing CASE/WHEN commands.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install the following versions: (9.1.23, 9.2.18, 9.3.14, 9.4.9, 9.5.4).

Vulnerable software versions

PostgreSQL: 9.1

Oracle Linux: 7

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External links
https://www.postgresql.org/about/news/1688/
https://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html

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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.