CVE-2020-18985 : What You Need to Know
Learn about CVE-2020-18985, a vulnerability in Zimbra Collaboration 8.8.12 that allows attackers to redirect users to malicious websites. Find out the impact, affected systems, exploitation mechanism, and mitigation steps.
An issue in /domain/service/.ewell-known/caldav of Zimbra Collaboration 8.8.12 allows attackers to redirect users to any arbitrary website of their choosing.
Understanding CVE-2020-18985
This CVE involves a vulnerability in Zimbra Collaboration 8.8.12 that enables attackers to redirect users to malicious websites.
What is CVE-2020-18985?
The vulnerability in Zimbra Collaboration 8.8.12 allows attackers to manipulate the redirection of users to any website they desire, potentially leading to phishing attacks or the installation of malware.
The Impact of CVE-2020-18985
This vulnerability can result in users being redirected to malicious websites, exposing them to various security risks such as phishing, malware installation, and potential data theft.
Technical Details of CVE-2020-18985
This section provides more technical insights into the vulnerability.
Vulnerability Description
The issue lies in the /domain/service/.ewell-known/caldav of Zimbra Collaboration 8.8.12, enabling unauthorized parties to control user redirection.
Affected Systems and Versions
- Affected System: Zimbra Collaboration 8.8.12
- Affected Versions: All versions of Zimbra Collaboration 8.8.12
Exploitation Mechanism
Attackers exploit this vulnerability by manipulating the redirection mechanism within Zimbra Collaboration 8.8.12 to direct users to malicious websites.
Mitigation and Prevention
Protecting systems from CVE-2020-18985 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Implement URL filtering to block access to potentially harmful websites.
- Regularly monitor and analyze network traffic for any suspicious redirection activities.
- Update Zimbra Collaboration to the latest version to patch the vulnerability.
Long-Term Security Practices
- Conduct regular security audits and penetration testing to identify and address vulnerabilities proactively.
- Educate users on safe browsing practices and the importance of avoiding clicking on suspicious links.
Patching and Updates
Ensure that Zimbra Collaboration is regularly updated to the latest version to apply security patches and mitigate the CVE-2020-18985 vulnerability.