CVE-2021-21443 : Security Advisory and Response
Learn about CVE-2021-21443 which allows agents to view customer user emails without proper permissions in OTRS Community Edition and OTRS. Find out its impact, technical details, and mitigation steps.
This article provides detailed information about CVE-2021-21443, a vulnerability that allows agents to list customer user emails without proper permissions in OTRS Community Edition and OTRS.
Understanding CVE-2021-21443
This section delves into the nature of the vulnerability, its impact, technical details, and mitigation steps.
What is CVE-2021-21443?
The CVE-2021-21443 vulnerability in OTRS allows agents to view customer user emails without the required permissions, potentially leading to unauthorized access to sensitive information.
The Impact of CVE-2021-21443
The impact of this vulnerability is considered low as it requires low privileges and user interaction. However, it can expose customer email addresses, leading to potential privacy breaches.
Technical Details of CVE-2021-21443
This section provides specific technical details related to the vulnerability.
Vulnerability Description
The vulnerability allows agents in OTRS to list customer user emails in the bulk action screen without the necessary permissions, affecting versions 6.0.1 and later of OTRS Community Edition, and versions of OTRS prior to 7.0.27.
Affected Systems and Versions
OTRS AG ((OTRS)) Community Edition: 6.0.x version 6.0.1 and later versions. OTRS AG OTRS: 7.0.x versions prior to 7.0.27.
Exploitation Mechanism
The vulnerability can be exploited by agents with low privileges and user interaction, allowing them to access customer email addresses without authorization.
Mitigation and Prevention
In this section, you will find information on how to mitigate and prevent the exploitation of CVE-2021-21443.
Immediate Steps to Take
It is recommended to update to OTRS 7.0.28 to mitigate the vulnerability and prevent unauthorized listing of customer user emails.
Long-Term Security Practices
Ensure that agents have appropriate permissions set in OTRS to prevent unauthorized access to sensitive customer data.
Patching and Updates
Regularly update OTRS to the latest versions and apply security patches to address known vulnerabilities.