SB2022080107 - Debian update for libpgjava
Published: August 1, 2022
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 secuirty vulnerabilities.
1) XML External Entity injection (CVE-ID: CVE-2020-13692)
The vulnerability allows a remote attacker to gain access to sensitive information.
The vulnerability exists due to insufficient validation of user-supplied XML input. A remote attacker can pass a specially crafted XML code to the affected application and view contents of arbitrary files on the system or initiate requests to external systems.
Successful exploitation of the vulnerability may allow an attacker to view contents of arbitrary file on the server or perform network scanning of internal and external infrastructure.
2) Improper initialization (CVE-ID: CVE-2022-21724)
The vulnerability allows a remote attacker to escalate privileges on the system.
The vulnerability exists due to improper initialization in pgjdbc driver when handling attacker-controlled URL in connection properties as the driver does not verify if the class implements the expected interface before instantiating the class. A remote attacker can pass specially crafted URL to the affected application and execute arbitrary code in the system.
3) Input validation error (CVE-ID: CVE-2022-26520)
The vulnerability allows a remote attacker to create arbitrary files on the system.
The vulnerability exists due to insufficient validation of user-supplied input when handling jdbc URL or its properties. A remote attacker can call java.util.logging.FileHandler to write to arbitrary files through the loggerFile and loggerLevel connection properties.
Successful exploitation of the vulnerability may allow an attacker to create and executable arbitraru JSP file under a Tomcat web root.
Remediation
Install update from vendor's website.