CVE-2021-23204 : Exploit Details and Defense Strategies

This article provides detailed information about CVE-2021-23204, a vulnerability in Gallagher Command Centre Server that exposes sensitive information to unauthorized users.

Understanding CVE-2021-23204

CVE-2021-23204 is a vulnerability in Gallagher Command Centre Server that allows OSDP key material to be exposed to Command Centre Operators.

What is CVE-2021-23204?

CVE-2021-23204 exposes sensitive information to unauthorized actors in Gallagher Command Centre Server, affecting versions 8.40 prior to 8.40.1888 (MR3) and 8.30 prior to 8.30.1359 (MR3).

The Impact of CVE-2021-23204

This vulnerability has a CVSS base score of 8.1 (High severity) with a low attack complexity. It poses a high risk to confidentiality and integrity by allowing exposure of key material.

Technical Details of CVE-2021-23204

CVE-2021-23204 is classified under CWE-200 Information Exposure and discovered internally via Gallagher's security advisory.

Vulnerability Description

The vulnerability exposes OSDP key material to Command Centre Operators, potentially leading to unauthorized access to sensitive information.

Affected Systems and Versions

Gallagher Command Centre 8.40 versions prior to 8.40.1888 (MR3) and 8.30 versions prior to 8.30.1359 (MR3) are impacted by this vulnerability.

Exploitation Mechanism

The vulnerability allows attackers to exploit the exposure of sensitive information by gaining access to OSDP key material through Command Centre Operators.

Mitigation and Prevention

To mitigate the risks associated with CVE-2021-23204, immediate steps should be taken to secure affected systems.

Immediate Steps to Take

Update Gallagher Command Centre to versions 8.40.1888 (MR3) or higher for 8.40 and 8.30.1359 (MR3) or higher for 8.30 to patch the vulnerability.

Long-Term Security Practices

Implement regular security updates, conduct security audits, and monitor for any unauthorized access to prevent similar vulnerabilities from being exploited.

Patching and Updates

Stay informed about security advisories from Gallagher and apply patches promptly to ensure the security of Command Centre Servers.