CVE-2017-16763: confire - Arbitrary Command Execution
Summary
CVE-2017-16763: Unsafe deserialization in confire. Affects confire versions < 0.2.0. No fix is published. How to fix ↓
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Background
Confire is a Python package available on PyPI that provides a configuration framework for managing user-specific settings. It allows users to load configuration data from a YAML file, which is then parsed and used within the application. This vulnerability affects Confire version 0.2.0.
Vulnerability Detail
An exploitable vulnerability has been discovered in the YAML parsing functionality of Confire's config.py file. The issue arises from the usage of the yaml.load function to load user-specific configuration from the "~/.confire.yaml" file. By manipulating the loaded YAML data, an attacker can execute arbitrary Python commands, leading to command execution. This vulnerability poses a significant risk as it allows an attacker to execute arbitrary code within the context of the application.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a temporary workaround, users can avoid loading user-specific configuration from the "~/.confire.yaml" file using the yaml.load function. Instead, alternative methods for loading and parsing configuration data should be employed to mitigate the risk of arbitrary command execution.
Conclusion
The vulnerability in Confire version 0.2.0 allows for arbitrary command execution, posing a significant risk to applications utilizing this package. It is crucial to upgrade to a non-vulnerable version or employ alternative methods for loading and parsing configuration data. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
This vulnerability allows an attacker to execute arbitrary Python commands within the context of the application, potentially leading to unauthorized access, data manipulation, or system compromise.
You can use Vulert's playground at Vulert Scanner to check if your application is affected by this vulnerability. Vulert monitors and alerts in real-time for open-source vulnerabilities, using just the Pipfile.lock file.
There are no known instances of this vulnerability being exploited in the wild. However, it is crucial to address this issue promptly to prevent potential attacks.
Yes, upgrading to a version of Confire that is not affected by this vulnerability will resolve the issue. It is recommended to update to the latest version of Confire.
While upgrading to a non-vulnerable version is the recommended solution, you can mitigate the risk by avoiding the usage of the vulnerable YAML parsing functionality. Employ alternative methods for loading and parsing configuration data.
