CVE-2017-1000037 : Vulnerability Insights and Analysis
Learn about CVE-2017-1000037 affecting RVM. Understand the vulnerability, its impact, affected systems, exploitation mechanism, and mitigation steps to secure your environment.
RVM (Ruby Version Manager) is vulnerable to command injection attacks due to the way it handles environment variables and executes certain actions based on files in the current working directory.
Understanding CVE-2017-1000037
RVM's behavior when loading environment variables and executing actions from the current working directory can lead to security risks.
What is CVE-2017-1000037?
RVM automatically loads environment variables, executes hooks, installs gems, and performs 'bundle install' based on files in the current working directory, potentially allowing malicious code execution.
The Impact of CVE-2017-1000037
The vulnerability in RVM could be exploited by attackers to execute arbitrary commands and potentially compromise the system where RVM is installed.
Technical Details of CVE-2017-1000037
RVM's vulnerability and its impact on affected systems.
Vulnerability Description
- RVM loads environment variables from files in the current working directory, making it susceptible to command injection attacks.
- RVM executes hooks and installs gems based on files in the current working directory, which can lead to code execution.
- Automatic 'bundle install' triggered by a Gemfile specified in the .versions.conf file in the current working directory may also result in code execution.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Versions: Not applicable
Exploitation Mechanism
The vulnerability arises from RVM's automatic handling of environment variables and actions based on files in the current working directory, allowing attackers to inject and execute malicious commands.
Mitigation and Prevention
Steps to mitigate the risks associated with CVE-2017-1000037.
Immediate Steps to Take
- Avoid running RVM in directories with untrusted files.
- Regularly update RVM to the latest version to patch known vulnerabilities.
Long-Term Security Practices
- Implement proper file and directory permissions to restrict access to sensitive directories.
- Monitor RVM's behavior for any unusual activities that could indicate a security breach.
Patching and Updates
- Stay informed about RVM security updates and apply patches promptly to address known vulnerabilities.