CVE-2022-0652 : Vulnerability Insights and Analysis

A vulnerability has been identified in Sophos UTM before version 9.710 that allows local attackers to perform offline brute-force attacks on password hashes due to insecure access permissions.

Understanding CVE-2022-0652

This CVE pertains to a security issue in Sophos UTM versions prior to 9.710 where password hashes of local users, including root, are exposed in Confd log files with insecure access permissions.

What is CVE-2022-0652?

The CVE-2022-0652 vulnerability in Sophos UTM enables a local attacker to launch offline brute-force attacks on password hashes contained in Confd log files, potentially compromising user passwords.

The Impact of CVE-2022-0652

With a CVSS base score of 3.3 (Low), this vulnerability poses a risk of unauthorized access to user accounts and sensitive information stored within Sophos UTM.

Technical Details of CVE-2022-0652

This section delves into the specifics of the CVE, including the vulnerability description, affected systems, versions, and the exploitation mechanism.

Vulnerability Description

Confd log files in Sophos UTM store password hashes of local users with inadequate access controls, allowing local threat actors to launch offline brute-force attacks on the hashes.

Affected Systems and Versions

Sophos UTM versions earlier than 9.710 are impacted by this vulnerability, exposing users to the risk of unauthorized access and potential password compromises.

Exploitation Mechanism

Local attackers can exploit this vulnerability by gaining access to the Confd log files containing password hashes and using brute-force techniques to decrypt the passwords.

Mitigation and Prevention

To mitigate the risks associated with CVE-2022-0652, immediate actions and long-term security practices should be adopted.

Immediate Steps to Take

Administrators should secure the Confd log files by restricting access permissions and monitor for any unauthorized access attempts. It is essential to update Sophos UTM to version 9.710 or above to address this vulnerability.

Long-Term Security Practices

Regularly review and enhance access controls on sensitive files, conduct security training for users to promote password hygiene, and stay informed about security advisories issued by Sophos.

Patching and Updates

Ensure timely installation of security patches and updates released by Sophos to remediate vulnerabilities and enhance the overall security posture of Sophos UTM.