CVE-2022-30284: Remote Command Execution in python-libnmap
Summary
CVE-2022-30284: DISPUTED In the python-libnmap package through 0.7.2 for Python, remote command execution can occur (if used in a client application that does not validate arguments). Affects python-libnmap versions < 0.7.3. Fixed in 0.7.3. How to fix ↓
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Background
python-libnmap is a Python library that provides a convenient interface to the Nmap security scanner. It allows users to programmatically execute Nmap scans and retrieve the results. The library is commonly used in client applications to perform network scanning and security assessments. However, in versions prior to 0.7.3, python-libnmap is vulnerable to remote command execution if used in a client application that does not properly validate input arguments.
Vulnerability Detail
The vulnerability (CVE-2022-30284) in python-libnmap arises from a lack of input validation in the NmapProcess function. If an application uses this function with arguments obtained from untrusted sources, an attacker can inject malicious commands and execute arbitrary code on the target system. This can lead to unauthorized access, data breaches, and potential compromise of the entire network. It is important to note that the vendor disputes the practicality of this scenario, as it would require using untrusted input from an untrusted network. However, the vulnerability exists and should be addressed to ensure the security of applications using python-libnmap.
How To Fix
Minimum fixed version
0.7.3
This is the first release that contains the fix.
pip install --upgrade "python-libnmap==0.7.3"Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As the vendor suggests, it is highly unlikely that an application would call NmapProcess with arguments obtained from untrusted sources over an untrusted network. However, if such a scenario is unavoidable, it is crucial to implement strict input validation and sanitization. All user-supplied arguments should be thoroughly validated and sanitized to prevent command injection. Additionally, network traffic should be encrypted and authenticated to minimize the risk of unauthorized access and tampering.
Conclusion
The vulnerability in python-libnmap (CVE-2022-30284) allows remote command execution, posing a significant security risk to applications utilizing this library. It is crucial to update to version 0.7.3 or later to fix the vulnerability. Additionally, implementing strict input validation and network security measures can further mitigate the risk. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
python-libnmap is a Python library that provides an interface to the Nmap security scanner. It allows users to programmatically execute Nmap scans and retrieve the results.
The vulnerability allows remote command execution, which can lead to unauthorized access, data breaches, and potential compromise of the entire network.
If your application uses python-libnmap versions prior to 0.7.3, it is affected by this vulnerability. It is recommended to update to the latest version to mitigate the risk.
You can update python-libnmap by running the command 'pip install --upgrade python-libnmap'. Make sure to use version 0.7.3 or later.
While the vendor disputes the practicality of the vulnerability scenario, if you must use untrusted input from an untrusted network, ensure strict input validation and sanitization. Encrypt and authenticate network traffic to minimize risks.
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