KLA11091 Multiple vulnerabilities in PostgreSQL

Multiple serious vulnerabilities have been found in PostgreSQL. Malicious users can exploit these vulnerabilities to bypass security restrictions and obtain sensitive information.

Below is a complete list of vulnerabilities:

1. An improper handling of empty passwords in libpq can be exploited remotely via an empty password to bypass security (authentication) restrictions;
2. An unspecified vulnerability related to the usage of the foreign data functionality can be exploited remotely to obtain sensitive information.

Technical details

Vulnerability (2) exists because all users (including those who did not have the USAGE permission on the associated foreign server) could see the options in the pg_user_mappings catalog.

Original advisories

PostgreSQL Security Update Release

Exploitation

Malware exists for this vulnerability. Usually such malware is classified as Exploit. More details.

Related products

PostgreSQL

CVE list

CVE-2017-7546 critical

CVE-2017-7547 warning

Solution

Update to the latest version

Download PostgreSQL

Impacts

• OSI

Obtain sensitive information. Exploitation of vulnerabilities with this impact can lead to capturing by abuser information, critical for user or system.

• SB

Security bypass. Exploitation of vulnerabilities with this impact can lead to performing actions restricted by current security settings.

• PE

Privilege escalation. Exploitation of vulnerabilities with this impact can lead to performing by abuser actions, which are normally disallowed for current role.

Affected Products

• PostgreSQL 9.2.x before 9.2.22PostgreSQL 9.3.x before 9.3.18PostgreSQL 9.4.x before 9.4.13PostgreSQL 9.5.x before 9.5.8PostgreSQL 9.6.x before 9.6.4