#VU7873 Authentication bypass in PostgreSQL

Published: 2017-08-15

Vulnerability identifier: #VU7873

Vulnerability risk: Low

CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-7546


Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Server applications / Database software

Vendor: PostgreSQL Global Development Group

The vulnerability allows a remote attacker to bypass authentication on the target system.

The weakness exists in the systems using libpq or a libpq-based connection driver to perform password-based authentication methods due to insufficient security restrictions. A remote attacker can submit an empty password to disable password login and log in to the system.

Successful exploitation of the vulnerability may result in unauthorized access to the system and further attacks.

The vulnerability is addressed in the following versions: 9.2.22, 9.3.18, 9.4.13, 9.5.8, 9.6.4.

Vulnerable software versions

PostgreSQL: 9.2.1 - 9.2.21, 9.3.1 - 9.3.17, 9.4.0 - 9.4.12, 9.5.0 - 9.5.7, 9.6.0 - 9.6.3

External links

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.

Latest bulletins with this vulnerability