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CVE-2021-21438 : Security Advisory and Response

Agents can access FAQ articles without permission in OTRS FAQ version 6.0.29 and OTRS version 7.0.24. Update to OTRS 7.0.25 immediately to fix the vulnerability.

Agents are able to see linked FAQ articles without permissions in OTRS AG's FAQ and OTRS versions. This vulnerability impacts FAQ version 6.0.29 and prior, OTRS version 7.0.24 and prior.

Understanding CVE-2021-21438

This CVE highlights a vulnerability that allows users to access FAQ articles without the necessary permissions, affecting the security of FAQ and OTRS versions.

What is CVE-2021-21438?

Agents can view linked FAQ articles even without the required permissions, posing a risk to the confidentiality and integrity of the system.

The Impact of CVE-2021-21438

The vulnerability impacts the security of FAQ version 6.0.29 and earlier, as well as OTRS version 7.0.24 and earlier, potentially leading to unauthorized access to sensitive information.

Technical Details of CVE-2021-21438

The vulnerability scored a CVSS base score of 3.5, indicating a low severity issue with required user interaction for exploitation.

Vulnerability Description

The vulnerability allows agents to bypass permission restrictions and view linked FAQ articles, compromising data confidentiality.

Affected Systems and Versions

FAQ version 6.0.29 and earlier, OTRS version 7.0.24 and earlier are susceptible to this security flaw.

Exploitation Mechanism

Attackers can exploit this vulnerability over a network with low privileges required, resulting in unauthorized access to FAQ content.

Mitigation and Prevention

To address CVE-2021-21438, immediate actions and long-term security practices are crucial.

Immediate Steps to Take

Update to OTRS 7.0.25 to mitigate the vulnerability and prevent unauthorized access to FAQ articles.

Long-Term Security Practices

Regularly review and manage user permissions to ensure access control and data security within the system.

Patching and Updates

Keep systems up to date with security patches and software updates to protect against known vulnerabilities.

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