SB2021011327 - Fedora 32 Modular update for postgresql
Published: January 13, 2021
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 5 secuirty vulnerabilities.
1) Untrusted search path (CVE-ID: CVE-2020-14349)
The vulnerability allows a remote user to escalate privileges within the database.
The vulnerability exists due to the way PostgreSQL handles search_path during replications. Users of a
replication publisher or subscriber database can create objects in the public
schema and harness them to execute arbitrary SQL functions under the identity
running replication, often a superuser.
2) Untrusted search path (CVE-ID: CVE-2020-14350)
The vulnerability allows a remote user to escalate privileges within the database.
The vulnerability exists due to the way PostgreSQL handles CREATE EXTENSION statements. A remote user with permission to create objects in the new extension's schema
or a schema of a prerequisite extension can execute arbitrary SQL functions under the identity of the superuser in certain cases.
3) SQL injection (CVE-ID: CVE-2020-25695)
The vulnerability allows a remote attacker to execute arbitrary SQL queries in database.
The vulnerability exists due to insufficient sanitization of user-supplied data. A remote authenticated attacker can send a specially crafted request to the affected application and execute arbitrary SQL commands within the application database.
Successful exploitation of this vulnerability may allow a remote attacker to read, delete, modify data in database and gain complete control over the affected application.
4) Input validation error (CVE-ID: CVE-2020-25696)
The vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to the "\gset" meta-command does not distinguish variables that control psql behavior. A remote attacker can execute arbitrary code as the operating system account.
5) Improper access control (CVE-ID: CVE-2020-25694)
The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper access restrictions. A remote attacker can perform a man-in-the-middle attack or observe clear-text transmissions and downgrade connection security settings.
Remediation
Install update from vendor's website.