Critical Integer Overflow Vulnerability in Python Package - CVE-2017-1000158
Summary
ALPINE-CVE-2017-1000158: CPython (aka Python) up to 2.7.13 is vulnerable to an integer overflow in the PyString_DecodeEscape function in stringobject.c, resulting in heap-based buffer overflow (and possible arbitrary code execution). Affects python versions < 2.7.14-r0. Fixed in 2.7.14-r0. How to fix ↓
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Background
Python is a widely-used high-level programming language known for its readability and versatility. It supports multiple programming paradigms and is extensively used in web development, data analysis, artificial intelligence, and more. The vulnerability in question affects versions of Python up to 2.7.13, specifically in the PyString_DecodeEscape function within stringobject.c, leading to potential security risks.
Vulnerability Detail
The vulnerability arises from an integer overflow in the PyString_DecodeEscape function, which can result in a heap-based buffer overflow. This flaw can be exploited by attackers to execute arbitrary code, posing significant risks to the integrity and confidentiality of affected systems. The vulnerability is classified with a CVSS score of 9.8, indicating its critical nature and the potential for severe impact if exploited.
How To Fix
Minimum fixed version
2.7.14-r0
This is the first release that contains the fix.
sudo apk add --upgrade pythonTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If immediate patching is not feasible, consider restricting access to the affected application or using alternative libraries that do not exhibit this vulnerability. Additionally, ensure that your environment is monitored for any suspicious activities.
Conclusion
CVE-2017-1000158 represents a critical vulnerability in the Python package that can lead to severe security risks. It is imperative for users to update to the patched version to safeguard their systems. Utilizing tools like Vulert can further enhance security by providing real-time monitoring for vulnerabilities.
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FAQ
CVE-2017-1000158 is a critical vulnerability in the Python programming language that can lead to arbitrary code execution due to an integer overflow.
The vulnerability affects Python versions up to 2.7.13. It is crucial to update to version 2.7.14-r0 or later to mitigate the risk.
You can use Vulert's playground at Vulert Scanner to check if your application is affected by this vulnerability without any signup.
Exploitation of this vulnerability can lead to arbitrary code execution, allowing attackers to gain unauthorized access to systems and data.
Vulert provides a solution that monitors and alerts for open-source vulnerabilities in your software using just a manifest file like package-lock.json.
References
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