CVE-2019-11318 : Security Advisory and Response

Zimbra Collaboration before version 8.8.12 Patch 1 is vulnerable to persistent XSS attacks.

Understanding CVE-2019-11318

Zimbra Collaboration is susceptible to persistent XSS vulnerabilities prior to version 8.8.12 Patch 1.

What is CVE-2019-11318?

This CVE identifies a security vulnerability in Zimbra Collaboration that allows for persistent XSS attacks.

The Impact of CVE-2019-11318

The vulnerability can be exploited by attackers to execute malicious scripts in the context of a user's session, potentially leading to unauthorized actions or data theft.

Technical Details of CVE-2019-11318

Zimbra Collaboration's vulnerability to persistent XSS attacks is a critical security issue that requires immediate attention.

Vulnerability Description

Prior to version 8.8.12 Patch 1, Zimbra Collaboration is susceptible to persistent XSS vulnerabilities, allowing attackers to inject and execute malicious scripts.

Affected Systems and Versions

Zimbra Collaboration versions before 8.8.12 Patch 1 are affected by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious scripts into the application, which are then executed in the context of a user's session.

Mitigation and Prevention

It is crucial to take immediate steps to mitigate the risks posed by CVE-2019-11318.

Immediate Steps to Take

Upgrade Zimbra Collaboration to version 8.8.12 Patch 1 or later to address the vulnerability.
Implement web application firewalls to filter and block malicious input.
Regularly monitor and audit web application logs for suspicious activities.

Long-Term Security Practices

Conduct regular security assessments and penetration testing to identify and address vulnerabilities.
Educate users and administrators about secure coding practices and the risks of XSS attacks.

Patching and Updates

Stay informed about security advisories and updates from Zimbra to apply patches promptly and ensure the system's security.