Check Point Advisories

PostgreSQL Database Core Server non-libpq Client Policy Bypass (CVE-2017-7546)

Vulnerability
Protection

Check Point Reference:	CPAI-2017-0722
Date Published:	29 Aug 2017
Severity:	High
Last Updated:	Sunday 17 September, 2017
Source:	PostgreSQL Global Development Group
Industry Reference:	CVE-2017-7546
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	PostgreSQL PostgreSQL 9.2.x prior to 9.2.22 PostgreSQL PostgreSQL 9.3.x prior to 9.3.18 PostgreSQL PostgreSQL 9.4.x prior to 9.4.13 PostgreSQL PostgreSQL 9.5.x prior to 9.5.8 PostgreSQL PostgreSQL 9.6.x prior to 9.6.4
Vulnerability Description	A security policy bypass vulnerability exists in the core server component of the PostgreSQL database server. The vulnerability is due to improper authentication of user accounts with empty passwords for clients that do not use libpq. A remote attacker could send maliciously crafted requests to a vulnerable server.

Protection Overview

This protection detects attempts to exploit this vulnerability.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R80 / R77 / R75

In the IPS tab, click Protections and find the PostgreSQL Database Core Server non-libpq Client Policy Bypass protection using the Search tool and Edit the protection's settings.
Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name: Application Servers Protection Violation.
Attack Information: PostgreSQL Database Core Server non-libpq Client Policy Bypass