SB2022092825 - Ubuntu update for postgresql-9.5

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) 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.

2) Integer overflow (CVE-ID: CVE-2021-32027)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to integer overflow when processing certain SQL array values during array subscribing calculation. An authenticated database user can pass specially crafted data to the application, trigger integer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system and can be exploited by a remote unauthenticated attacker via SQL injection vulnerability in the frontend application.

Remediation

Install update from vendor's website.

References

• https://ubuntu.com/security/notices/USN-5645-1