CVE-2022-21950 : What You Need to Know

This article provides an in-depth analysis of CVE-2022-21950, which involves the unsafe handling of the /tmp/.iroha_unix directory in canna, affecting certain versions of openSUSE Backports SLE-15-SP3 and SLE-15-SP4. Understanding the vulnerability, its impact, technical details, mitigation, and prevention strategies are discussed below.

Understanding CVE-2022-21950

CVE-2022-21950 is a security vulnerability in the canna systemd service in openSUSE Backports SLE-15-SP3 and SLE-15-SP4. The vulnerability allows local users to hijack the UNIX domain socket, potentially leading to unauthorized access and manipulation of system resources.

What is CVE-2022-21950?

A Improper Access Control vulnerability in the systemd service of canna in openSUSE Backports SLE-15-SP3, openSUSE Backports SLE-15-SP4 allows local users to hijack the UNIX domain socket. Affected versions include canna-3.7p3-bp153.2.3.1 and 3.7p3-bp154.3.3.1.

The Impact of CVE-2022-21950

The impact of CVE-2022-21950 is rated as MEDIUM based on the CVSS v3.1 scoring. It has a base score of 5.3, indicating a moderate severity level. The vulnerability can result in unauthorized access and potential system compromise by local users.

Technical Details of CVE-2022-21950

Vulnerability Description

The vulnerability arises due to improper access control within the systemd service of canna, allowing local users to manipulate the UNIX domain socket.

Affected Systems and Versions

Vendor: openSUSE
Affected Products: openSUSE Backports SLE-15-SP3, openSUSE Backports SLE-15-SP4
Affected Versions: canna-3.7p3-bp153.2.3.1, 3.7p3-bp154.3.3.1

Exploitation Mechanism

Local users can exploit the vulnerability to hijack the UNIX domain socket, potentially gaining unauthorized access to sensitive system resources.

Mitigation and Prevention

Immediate Steps to Take

To mitigate the CVE-2022-21950 vulnerability, users are advised to apply the latest security patches provided by the vendor. Additionally, restricting access to vulnerable services and implementing least privilege principles can help reduce the risk of exploitation.

Long-Term Security Practices

Implementing regular security updates, conducting security audits, and ensuring proper access controls are essential long-term security practices to protect systems from similar vulnerabilities.

Patching and Updates

Users should regularly check for security advisories from openSUSE and apply patches promptly to address known security issues.