CVE-2020-8153 : Security Advisory and Response
Learn about CVE-2020-8153, an improper access control vulnerability in Nextcloud Groupfolders version 4.0.4, allowing unauthorized deletion of hidden directories. Find mitigation steps and best practices here.
This CVE-2020-8153 article provides insights into an improper access control vulnerability in Nextcloud Groupfolders version 4.0.4.
Understanding CVE-2020-8153
The vulnerability in the Groupfolders app 4.0.3 allowed the deletion of hidden directories when renaming an accessible item to the same name.
What is CVE-2020-8153?
The CVE-2020-8153 vulnerability involves improper access control in Nextcloud Groupfolders version 4.0.4.
The Impact of CVE-2020-8153
The vulnerability could potentially lead to unauthorized deletion of hidden directories, compromising data integrity and security.
Technical Details of CVE-2020-8153
This section delves into the technical aspects of the CVE.
Vulnerability Description
The vulnerability arises from improper access control in the Groupfolders app 4.0.3, enabling the deletion of hidden directories during the renaming process.
Affected Systems and Versions
- Product: Nextcloud Groupfolders
- Version: 4.0.4
Exploitation Mechanism
The vulnerability can be exploited by renaming an accessible item to the same name, triggering the deletion of hidden directories.
Mitigation and Prevention
Protect your systems from CVE-2020-8153 with the following measures:
Immediate Steps to Take
- Update Nextcloud Groupfolders to a patched version.
- Monitor and restrict access to sensitive directories.
Long-Term Security Practices
- Implement least privilege access controls.
- Regularly audit and review access permissions.
Patching and Updates
- Stay informed about security advisories from Nextcloud.
- Apply patches promptly to address known vulnerabilities.