CVE-2021-36094 : Exploit Details and Defense Strategies
Learn about CVE-2021-36094, a Medium severity XSS vulnerability in OTRS software. Find out how it impacts systems, affected versions, and steps to mitigate the risk.
This article provides an in-depth analysis of CVE-2021-36094, a Cross-site Scripting (XSS) vulnerability found in OTRS AG ((OTRS)) Community Edition and OTRS software.
Understanding CVE-2021-20657
CVE-2021-36094 is a security issue that allows an attacker to execute a cross-site scripting attack by crafting a request for appointment edit screen in OTRS software.
What is CVE-2021-20657?
It's possible to craft a request for appointment edit screen, which could lead to the XSS attack. This vulnerability affects OTRS AG ((OTRS)) Community Edition 6.0.1 and later versions, as well as OTRS 7.0.28 and prior versions.
The Impact of CVE-2021-20657
With a CVSS base score of 5.7 (Medium severity), this vulnerability poses a threat to the integrity of affected systems, requiring low privileges and user interaction for exploitation while affecting network availability.
Technical Details of CVE-2021-20657
This section delves into the specifics of the vulnerability.
Vulnerability Description
The XSS vulnerability in appointment edit popup screen allows attackers to execute malicious scripts, compromising the security of the application.
Affected Systems and Versions
OTRS AG ((OTRS)) Community Edition 6.0.x version 6.0.1 and newer, OTRS 7.0.x version 7.0.28, and earlier versions are impacted by this vulnerability.
Exploitation Mechanism
Attackers can exploit the vulnerability by crafting specific requests to the appointment edit screen, enabling the execution of XSS attacks.
Mitigation and Prevention
To protect systems from CVE-2021-36094 and similar threats, follow these security measures.
Immediate Steps to Take
Update OTRS installations to version 7.0.29 to mitigate the XSS vulnerability and enhance system security.
Long-Term Security Practices
Regularly monitor security advisories, conduct security assessments, and educate users about safe computing practices to prevent XSS attacks.
Patching and Updates
Stay informed about security patches released by OTRS AG and apply updates promptly to address any known vulnerabilities.