CVE-2017-16763 : Security Advisory and Response
Learn about CVE-2017-16763, a vulnerability in Confire 0.2.0 allowing YAML parsers to execute Python commands, potentially leading to command execution. Find mitigation steps and preventive measures here.
This CVE-2017-16763 article provides insights into a vulnerability in Confire 0.2.0 related to YAML parsing in config.py, potentially leading to command execution.
Understanding CVE-2017-16763
What is CVE-2017-16763?
An exploitable vulnerability exists in the YAML parsing functionality in config.py in Confire 0.2.0. The issue arises from loading user-specific configurations from "~/.confire.yaml" using the yaml.load function, allowing a YAML parser to execute arbitrary Python commands, leading to command execution.
The Impact of CVE-2017-16763
The vulnerability enables an attacker to inject Python code into loaded YAML, potentially executing malicious commands.
Technical Details of CVE-2017-16763
Vulnerability Description
The vulnerability in Confire 0.2.0 allows YAML parsers to execute Python commands, leading to command execution.
Affected Systems and Versions
- Product: Confire 0.2.0
- Vendor: N/A
- Version: N/A
Exploitation Mechanism
The vulnerability is exploited by injecting Python code into the loaded YAML, triggering the execution of malicious commands.
Mitigation and Prevention
Immediate Steps to Take
- Avoid loading user-specific configurations from untrusted sources.
- Implement input validation to prevent malicious code injection.
Long-Term Security Practices
- Regularly update Confire to the latest version to patch known vulnerabilities.
Patching and Updates
Apply patches provided by the vendor to address the YAML parsing vulnerability in Confire 0.2.0.