Critical Vulnerability in Python 2.7: Denial of Service Risks
Summary
USN-7710-2: python2.7 vulnerability. Affects python2.7 versions < 2.7.6-8ubuntu0.6+esm26. Fixed in 2.7.6-8ubuntu0.6+esm26. How to fix ↓
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Background
Python 2.7 is a widely-used programming language known for its simplicity and versatility in various applications, including web development, data analysis, and automation. Despite its popularity, Python 2.7 has reached the end of its life, making it susceptible to unpatched vulnerabilities. This specific vulnerability allows attackers to exploit the language's handling of HTML and Tar archives, leading to potential denial of service attacks.
Vulnerability Detail
The vulnerability arises from inefficient parsing of maliciously crafted HTML input and Tar archives within Python 2.7. Attackers can exploit this flaw to cause a denial of service, potentially disrupting applications that rely on Python for processing. The issues are identified as CVE-2025-6069 and CVE-2025-8194, which highlight the critical nature of the vulnerabilities and their potential impact on system stability and security.
How To Fix
Minimum fixed version
2.7.6-8ubuntu0.6+esm26
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, consider limiting the input size for HTML and Tar file processing in your applications to mitigate the risk of denial of service attacks. Additionally, monitor your applications for unusual behavior that may indicate an attempted exploit.
Conclusion
In summary, the vulnerabilities in Python 2.7 pose significant risks, particularly regarding denial of service attacks. It is crucial to update to the latest patched version to mitigate these risks. Utilizing tools like Vulert can aid in monitoring and managing vulnerabilities effectively.
See every vulnerability recorded for python2.7 →
FAQ
The vulnerability involves inefficient parsing of malicious HTML and Tar archives, which can lead to denial of service.
You can use Vulert's playground at Vulert Scanner to check if your application is affected by this vulnerability without requiring any signup.
Yes, patches are available for various versions of Python 2.7. Updating to the latest patched version is recommended.
Failure to address this vulnerability may result in denial of service attacks, causing disruptions to applications and services relying on Python 2.7.
Vulert monitors and alerts in real-time for open-source vulnerabilities in software using a manifest file like package-lock.json, helping you maintain secure applications.
References
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