CVE-2021-35207 : Vulnerability Insights and Analysis
Uncover the details of CVE-2021-35207, an XSS flaw in Zimbra Collaboration Suite login component pre Patch 23. Learn the impact, affected versions, and mitigation steps.
An XSS vulnerability exists in the login component of Zimbra Web Client, allowing an attacker to execute arbitrary JavaScript by adding executable code to the loginErrorCode parameter in the login URL.
Understanding CVE-2021-35207
This CVE highlights a cross-site scripting (XSS) vulnerability present in Zimbra Collaboration Suite versions before 8.8.15 Patch 23 and 9.0 before 9.0.0 Patch 16.
What is CVE-2021-35207?
CVE-2021-35207 is an XSS vulnerability found in the login functionality of Zimbra Web Client, enabling attackers to run malicious JavaScript code by manipulating the loginErrorCode parameter in the login URL.
The Impact of CVE-2021-35207
Exploitation of this vulnerability could lead to unauthorized access, data theft, and potential compromise of user accounts within the Zimbra Collaboration Suite environment.
Technical Details of CVE-2021-35207
This section delves into the specifics of the vulnerability, affected systems, and exploitation methods.
Vulnerability Description
The XSS flaw allows threat actors to inject and execute arbitrary JavaScript code through the loginErrorCode parameter, posing risks to the integrity and security of the Zimbra Web Client.
Affected Systems and Versions
Zimbra Collaboration Suite versions prior to 8.8.15 Patch 23 and 9.0 before 9.0.0 Patch 16 are susceptible to this XSS vulnerability, necessitating immediate attention and remediation efforts.
Exploitation Mechanism
By tampering with the loginErrorCode parameter in the login URL, attackers can insert executable code, potentially leading to unauthorized script execution and security breaches.
Mitigation and Prevention
To safeguard systems against CVE-2021-35207, prompt mitigation measures and proactive security practices are crucial.
Immediate Steps to Take
Organizations using affected Zimbra Collaboration Suite versions should apply the recommended patches, monitor for unusual activities, and educate users on identifying and reporting suspicious login behaviors.
Long-Term Security Practices
Enhancing web application security, implementing input validation mechanisms, and conducting regular security assessments can fortify defenses against XSS vulnerabilities and other cyber threats.
Patching and Updates
Regularly updating Zimbra Collaboration Suite to the latest versions, specifically 8.8.15 Patch 23 and 9.0.0 Patch 16, is imperative to address known security weaknesses and protect systems from potential exploits.