CVE-2021-21436 Explained : Impact and Mitigation

Agents are able to see and link Config Items without permissions, which are defined in General Catalog. This vulnerability affects OTRS AG OTRSCIsInCustomerFrontend 7.0.x version 7.0.14 and prior versions.

Understanding CVE-2021-21436

This CVE identifies a security issue in OTRS AG OTRSCIsInCustomerFrontend that allows agents to view and link Config Items without the necessary permissions.

What is CVE-2021-21436?

CVE-2021-21436 highlights a vulnerability in the OTRSCIsInCustomerFrontend product of OTRS AG, enabling agents to access and associate Config Items without proper authorization.

The Impact of CVE-2021-21436

The impact of this CVE lies in the potential unauthorized access and linking of Config Items by agents, compromising data integrity and security.

Technical Details of CVE-2021-21436

This section delves into the technical aspects of the CVE, detailing the vulnerability, affected systems, and the exploitation mechanism.

Vulnerability Description

The vulnerability allows agents to view and link Config Items within the General Catalog without the required permissions, specifically affecting OTRSCIsInCustomerFrontend 7.0.x version 7.0.14 and earlier.

Affected Systems and Versions

OTRS AG OTRSCIsInCustomerFrontend 7.0.x version 7.0.14 and prior versions are affected by this security flaw.

Exploitation Mechanism

Agents can exploit this vulnerability to access and link Config Items beyond their authorized access level, potentially compromising data confidentiality.

Mitigation and Prevention

In this section, we discuss the steps to mitigate the risks posed by CVE-2021-21436 and prevent future occurrences.

Immediate Steps to Take

Update to OTRSCIsInCustomerFrontend 7.0.15 to patch the vulnerability and prevent unauthorized Config Item access.

Long-Term Security Practices

Regularly review and adjust user permissions to restrict unauthorized access to sensitive information.

Patching and Updates

Stay informed about security advisories and promptly apply patches and updates to safeguard against vulnerabilities like CVE-2021-21436.