CVE-2018-10939 : Exploit Details and Defense Strategies
Learn about CVE-2018-10939, a Persistent XSS vulnerability in Zimbra Web Client within Zimbra Collaboration Suite versions 8.8 and 8.7. Find out the impact, affected systems, exploitation mechanism, and mitigation steps.
A Persistent XSS vulnerability has been identified in Zimbra Web Client (ZWC) within Zimbra Collaboration Suite versions 8.8 prior to 8.8.8.Patch4 and 8.7 prior to 8.7.11.Patch4. This vulnerability allows for the execution of malicious code through a contact group.
Understanding CVE-2018-10939
This CVE involves a Persistent XSS vulnerability in Zimbra Web Client (ZWC) within specific versions of Zimbra Collaboration Suite.
What is CVE-2018-10939?
CVE-2018-10939 is a Persistent XSS vulnerability found in Zimbra Web Client (ZWC) within Zimbra Collaboration Suite versions 8.8 before 8.8.8.Patch4 and 8.7 before 8.7.11.Patch4.
The Impact of CVE-2018-10939
This vulnerability allows attackers to execute malicious code through a contact group, potentially leading to unauthorized access and data manipulation.
Technical Details of CVE-2018-10939
This section provides more technical insights into the vulnerability.
Vulnerability Description
The vulnerability in Zimbra Web Client (ZWC) enables Persistent XSS via a contact group, affecting specific versions of Zimbra Collaboration Suite.
Affected Systems and Versions
- Zimbra Collaboration Suite 8.8 versions prior to 8.8.8.Patch4
- Zimbra Collaboration Suite 8.7 versions prior to 8.7.11.Patch4
Exploitation Mechanism
The vulnerability can be exploited by injecting malicious code through a contact group, potentially leading to the execution of unauthorized actions.
Mitigation and Prevention
Protecting systems from CVE-2018-10939 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply the recommended patches provided by Zimbra for versions 8.8.8.Patch4 and 8.7.11.Patch4.
- Educate users about the risks of executing code from untrusted sources.
Long-Term Security Practices
- Regularly update and patch Zimbra Collaboration Suite to mitigate known vulnerabilities.
- Implement security measures to prevent XSS attacks and unauthorized code execution.
- Conduct security training for users to enhance awareness of potential threats.
- Monitor and analyze system logs for any suspicious activities.
- Consider implementing web application firewalls to filter and block malicious traffic.
Patching and Updates
Ensure that all systems running Zimbra Collaboration Suite are updated with the latest patches to address the Persistent XSS vulnerability.