CVE-2020-5217 : Vulnerability Insights and Analysis
Learn about CVE-2020-5217, a vulnerability in RubyGem secure_headers allowing directive injection. Find impact details, affected versions, and mitigation steps here.
In Secure Headers (RubyGem secure_headers), a directive injection vulnerability is present in certain versions. This CVE has a CVSS base score of 4.4 (Medium).
Understanding CVE-2020-5217
What is CVE-2020-5217?
CVE-2020-5217 is a vulnerability in the RubyGem secure_headers that allows for directive injection when using dynamic overrides with user input.
The Impact of CVE-2020-5217
The vulnerability could lead to directive injection, potentially allowing attackers to override security directives and manipulate the behavior of the application.
Technical Details of CVE-2020-5217
Vulnerability Description
- The vulnerability exists in versions before 3.8.0, 5.1.0, and 6.2.0 of secure_headers, allowing for semicolon injection in user-supplied input.
- Fixed versions convert semicolons to spaces and emit deprecation warnings.
Affected Systems and Versions
- Versions affected: < 3.8.0, >= 5.0.0, < 5.1.0, >= 6.0.0, < 6.2.0
Exploitation Mechanism
- Attack Complexity: High
- Attack Vector: Network
- Privileges Required: Low
- User Interaction: Required
Mitigation and Prevention
Immediate Steps to Take
- Upgrade to fixed versions: 6.2.0, 5.1.0, 3.8.0
- Review and sanitize user input to prevent injection attacks
Long-Term Security Practices
- Regularly update dependencies and libraries
- Implement input validation and output encoding
Patching and Updates
- Apply patches provided by the vendor