#VU6893 Man-in-the-middle attack in PostgreSQL - CVE-2017-7485

Vulnerability identifier: #VU6893

Vulnerability risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-7485

CWE-ID: CWE-300

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
PostgreSQL
Server applications / Database software

Vendor: PostgreSQL Global Development Group

Description
The vulnerability allows a remote attacker to conduct a man-in-the-middle attack.

The weakness exists in the PGREQUIRESSL environment due to no enforcement of a SSL/TLS connection to a PostgreSQL server. A remote attacker can launch a man-in-the-middle attack to strip the SSL/TLS protection from a connection between a client and a server and modify the communicated data.

Successful exploitation of the vulnerability results in unauthorized access to sensitive information.

Mitigation
Update to versions 9.3.17, 9.4.12, 9.5.7, 9.6.3.

Vulnerable software versions

PostgreSQL: 9.3.1 - 9.3.16, 9.4.0 - 9.4.11, 9.5.1 - 9.5.6, 9.6.0 - 9.6.2

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External links
https://www.postgresql.org/about/news/1746/

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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.