CVE-2018-10949 : Exploit Details and Defense Strategies
Learn about CVE-2018-10949, a vulnerability in Zimbra Collaboration Suite versions allowing account enumeration through error message discrepancies. Find mitigation steps and prevention measures.
Zimbra Collaboration Suite 8.8 before version 8.8.8, version 8.7 before version 8.7.11.Patch3, and version 8.6 have a vulnerability in the mailboxd component that allows for account enumeration by exploiting error message discrepancies.
Understanding CVE-2018-10949
This CVE identifies a security vulnerability in Zimbra Collaboration Suite versions that can be exploited to determine the existence of user accounts.
What is CVE-2018-10949?
The vulnerability in Zimbra Collaboration Suite versions allows attackers to discern account existence by exploiting differences in error messages.
The Impact of CVE-2018-10949
The vulnerability enables malicious actors to identify valid user accounts, potentially leading to targeted attacks or unauthorized access.
Technical Details of CVE-2018-10949
The technical aspects of the vulnerability in Zimbra Collaboration Suite versions.
Vulnerability Description
The mailboxd component in Zimbra Collaboration Suite versions before specified patches allows for account enumeration through error message discrepancies.
Affected Systems and Versions
- Zimbra Collaboration Suite 8.8 before 8.8.8
- Zimbra Collaboration Suite 8.7 before 8.7.11.Patch3
- Zimbra Collaboration Suite 8.6
Exploitation Mechanism
Attackers exploit the difference between "HTTP 404 - account is not active" and "HTTP 401 - must authenticate" error messages to determine account existence.
Mitigation and Prevention
Steps to mitigate and prevent exploitation of CVE-2018-10949.
Immediate Steps to Take
- Apply the necessary patches provided by Zimbra to address the vulnerability.
- Monitor for any suspicious activities related to account enumeration.
Long-Term Security Practices
- Regularly update Zimbra Collaboration Suite to the latest versions to ensure security patches are in place.
- Educate users on the importance of strong authentication practices to prevent unauthorized access.
Patching and Updates
Ensure timely installation of patches and updates released by Zimbra to mitigate the vulnerability.