Python 2.7 Vulnerability Reversion - USN-4754-2
Summary
USN-4754-2: python2.7 regression. Affects python2.7 versions < 2.7.6-8ubuntu0.6+esm9. Fixed in 2.7.6-8ubuntu0.6+esm9. How to fix ↓
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Background
Python 2.7 is a widely used programming language known for its simplicity and readability. It is often utilized in various applications, from web development to data analysis. The package provides essential libraries and tools for developers. However, it has been found to be vulnerable to certain security issues, which can lead to severe consequences if not addressed promptly.
Vulnerability Detail
USN-4754-1 addressed a vulnerability in Python that allowed improper handling of certain inputs. This could potentially enable an attacker to execute arbitrary code or cause a denial of service. The fix for CVE-2021-3177 inadvertently introduced a regression in Python 2.7, necessitating a reversion of the security fix pending further investigation.
How To Fix
Minimum fixed version
2.7.6-8ubuntu0.6+esm9
This is the first release that contains the fix.
sudo apt-get install --only-upgrade python2.7Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary workaround, users can avoid using the affected functionalities until the patch is applied. It is advisable to monitor the official security notices for updates regarding the vulnerability.
Conclusion
The Python 2.7 vulnerability highlighted in USN-4754-2 poses significant risks, including arbitrary code execution and denial of service. Users are advised to update their packages to the latest patched versions to mitigate these risks. Temporary workarounds are available, but a permanent fix is essential for long-term security.
See every vulnerability recorded for python2.7 →
FAQ
USN-4754-2 is a security notice that addresses a regression introduced in Python 2.7 due to a previous fix for a vulnerability.
The vulnerability could allow attackers to execute arbitrary code or cause a denial of service, posing significant security risks.
You can use Vulert to monitor and alert for open-source vulnerabilities in your software. Visit Vulert Scanner to check your application without needing to sign up.
Yes, updating to the patched version of Python 2.7 as specified in the 'how to fix' section will resolve the vulnerability.
If immediate updates are not possible, avoid using the affected functionalities and monitor for updates from official sources.
References
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