CVE-2020-16144 : Exploit Details and Defense Strategies
Discover the impact of CVE-2020-16144, a vulnerability in the files_antivirus component versions before 0.15.2 for ownCloud. Learn about affected systems, exploitation, and mitigation steps.
This CVE-2020-16144 article provides insights into a vulnerability affecting the files_antivirus component versions before 0.15.2 for ownCloud.
Understanding CVE-2020-16144
This section delves into the details of the vulnerability and its impact.
What is CVE-2020-16144?
CVE-2020-16144 occurs when using an object storage like S3 as the file store in ownCloud. It arises when a user creates a public link to a folder allowing anonymous users to upload files. If a user uploads a virus, the files antivirus app detects the virus but fails to delete it due to permission issues.
The Impact of CVE-2020-16144
The vulnerability affects the files_antivirus component versions before 0.15.2 for ownCloud, potentially leaving infected files undeleted and posing a security risk.
Technical Details of CVE-2020-16144
Explore the technical aspects of the vulnerability.
Vulnerability Description
The vulnerability arises from the files_antivirus component's inability to delete detected viruses due to permission constraints, leaving the system exposed to potential threats.
Affected Systems and Versions
- Product: ownCloud
- Vendor: n/a
- Versions affected: files_antivirus component versions before 0.15.2
Exploitation Mechanism
The vulnerability is exploited when a user uploads a virus-infected file via a public link, triggering the antivirus detection but failing to remove the virus due to permission limitations.
Mitigation and Prevention
Learn how to mitigate the risks associated with CVE-2020-16144.
Immediate Steps to Take
- Update the files_antivirus component to version 0.15.2 or later to patch the vulnerability.
- Restrict public upload permissions to prevent unauthorized file uploads.
Long-Term Security Practices
- Regularly update and patch all components of the ownCloud system.
- Implement strict file upload policies and user permissions to prevent malicious file uploads.
Patching and Updates
Ensure timely installation of security patches and updates to maintain system integrity and protect against known vulnerabilities.