CVE-2020-15236 Explained : Impact and Mitigation
Learn about CVE-2020-15236, a high severity directory traversal vulnerability in Wiki.js versions before 2.5.151. Find out the impacted systems, exploitation risks, and mitigation steps.
In Wiki.js before version 2.5.151, a directory traversal vulnerability exists, allowing malicious users to read files outside the Wiki.js context.
Understanding CVE-2020-15236
What is CVE-2020-15236?
This CVE refers to a directory traversal vulnerability in Wiki.js versions prior to 2.5.151, enabling unauthorized access to files outside the application's intended scope.
The Impact of CVE-2020-15236
The vulnerability poses a high severity risk with a CVSS base score of 8.6, allowing attackers to compromise confidentiality by reading sensitive files.
Technical Details of CVE-2020-15236
Vulnerability Description
The issue arises when a storage module with local asset cache fetching is enabled, permitting directory traversal via crafted URLs.
Affected Systems and Versions
- Product: Wiki
- Vendor: Requarks
- Versions Affected: >= 2.5.80, < 2.5.151
Exploitation Mechanism
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
Mitigation and Prevention
Immediate Steps to Take
- Update Wiki.js to version 2.5.151 or later to patch the vulnerability.
- Disable any storage module with local asset caching capabilities.
Long-Term Security Practices
- Regularly monitor and apply security updates for Wiki.js.
- Implement web application firewalls to mitigate similar vulnerabilities.
Patching and Updates
- Apply commit 084dcd69d1591586ee4752101e675d5f0ac6dcdc to sanitize paths and prevent directory traversal.