CVE-2023-23554 : Exploit Details and Defense Strategies

This CVE-2023-23554 was published on March 7, 2023, by JPCERT. It highlights an uncontrolled search path element vulnerability existing in pg_ivm versions prior to 1.5.1. This vulnerability allows execution of functions without specifying schema names, potentially leading to the execution of unexpected functions with the owner's privilege.

Understanding CVE-2023-23554

This section will delve into the details of CVE-2023-23554, discussing what it entails and the impact it may have.

What is CVE-2023-23554?

CVE-2023-23554 is an uncontrolled search path element vulnerability in pg_ivm versions before 1.5.1. It allows attackers to execute unexpected functions with the privilege of the materialized view owner if exploited.

The Impact of CVE-2023-23554

If this vulnerability is exploited, an attacker may execute arbitrary functions with the owner's privilege, compromising the security and integrity of the system. It poses a risk of unauthorized access and potential data manipulation.

Technical Details of CVE-2023-23554

In this section, we will explore the technical aspects of CVE-2023-23554, including the vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability in pg_ivm versions prior to 1.5.1 allows for the execution of functions without specifying schema names, potentially leading to the execution of unexpected functions with the owner's privilege.

Affected Systems and Versions

Vendor: IVM Development Group Product: pg_ivm Affected Versions: versions prior to 1.5.1

Exploitation Mechanism

Under certain conditions, attackers can trick pg_ivm into executing unexpected functions from other schemas with the materialized view owner's privilege.

Mitigation and Prevention

Mitigating CVE-2023-23554 is crucial to maintaining the security of systems using pg_ivm. Here are some steps to take for immediate response and long-term security practices.

Immediate Steps to Take

Update to pg_ivm version 1.5.1 or later to mitigate the vulnerability.
Restrict access and permissions to minimize the risk of unauthorized execution of functions.

Long-Term Security Practices

Regularly update and patch pg_ivm to address any security vulnerabilities promptly.
Implement least privilege principles to limit privileges granted to users and applications.

Patching and Updates

Ensure regular monitoring of security advisories and updates provided by IVM Development Group for pg_ivm. Apply patches and updates promptly to address known vulnerabilities and enhance system security.