SB2021122220 - Red Hat Enterprise Linux 8 update for the postgresql:13 module

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Main Vulnerability Database SB2021122220

SB2021122220 - Red Hat Enterprise Linux 8 update for the postgresql:13 module

Published: December 22, 2021

Security Bulletin ID SB2021122220
Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Medium 50% Low 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Memory leak (CVE-ID: CVE-2021-3677)

The vulnerability allows a remote user to perform DoS attack or gain access to sensitive information.

The vulnerability exists due memory leak during parallel sort operations. A remote user can force the application to leak memory and perform denial of service attack or read arbitrary memory parts on the system.


2) Missing Encryption of Sensitive Data (CVE-ID: CVE-2021-23214)

The vulnerability allows a remote attacker to perform MitM attack.

The vulnerability exists due to the way PostgreSQL handles encrypted connections. When the server is configured to use trust authentication with a clientcert requirement or to use cert authentication, a man-in-the-middle attacker can inject arbitrary SQL queries when a connection is first established, despite the use of SSL certificate verification and encryption.


Remediation

Install update from vendor's website.

References