Vulnerability identifier: #VU30590

Vulnerability risk: Medium

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

CVE-ID: CVE-2015-3167

CWE-ID: CWE-200

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 gain access to sensitive information.

contrib/pgcrypto in PostgreSQL before 9.0.20, 9.1.x before 9.1.16, 9.2.x before 9.2.11, 9.3.x before 9.3.7, and 9.4.x before 9.4.2 uses different error responses when an incorrect key is used, which makes it easier for attackers to obtain the key via a brute force attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

PostgreSQL: 9.4 - 9.4.1

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External links
http://ubuntu.com/usn/usn-2621-1
http://www.debian.org/security/2015/dsa-3269
http://www.debian.org/security/2015/dsa-3270
http://www.postgresql.org/about/news/1587/
http://www.postgresql.org/docs/9.0/static/release-9-0-20.html
http://www.postgresql.org/docs/9.1/static/release-9-1-16.html
http://www.postgresql.org/docs/9.2/static/release-9-2-11.html
http://www.postgresql.org/docs/9.3/static/release-9-3-7.html
http://www.postgresql.org/docs/9.4/static/release-9-4-2.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.