Vulnerability in python2.6 - regression update
Summary
DLA-25-3: python2.6 - regression update. Affects python2.6 versions < 2.6.6-8+deb6u3. Fixed in 2.6.6-8+deb6u3. How to fix ↓
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Background
Python2.6 is a programming language widely used for various applications. It provides a comprehensive standard library and supports multiple programming paradigms. This vulnerability affects the python2.6 package in Debian 6 Squeeze.
Vulnerability Detail
A regression has been identified in the python2.6 update of DLA-25-1, which may cause python applications to abort if they were running during the upgrade but had not already imported the 'os' module, and do so after the upgrade. This update fixes this upgrade scenario. Additionally, multiple vulnerabilities were discovered in python2.6, including incorrect handling of NUL bytes in certificate hostnames, which may allow server spoofing via specially-crafted certificates signed by a trusted Certification Authority, and a buffer overflow in socket.recvfrom_into leading to application crash and possibly code execution.
How To Fix
Minimum fixed version
2.6.6-8+deb6u3
This is the first release that contains the fix.
sudo apt-get install --only-upgrade python2.6Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
There is no specific workaround mentioned for this vulnerability.
Conclusion
The python2.6 package in Debian 6 Squeeze is vulnerable to a regression issue during the upgrade process, as well as other vulnerabilities related to certificate hostname handling and buffer overflow. It is crucial to update the package to version 2.6.6-8+deb6u3 or later to mitigate these vulnerabilities. For further support on vulnerability remediation, contact DevNack.com.
See every vulnerability recorded for python2.6 →
FAQ
The impact of this vulnerability can vary depending on the specific python applications running during the upgrade. In some cases, the applications may abort if they had not already imported the 'os' module and do so after the upgrade.
You can use Vulert Playground (https://vulert.com/scanner) to check if your application is affected by this vulnerability. Simply upload your manifest file (e.g., package-lock.json) and Vulert will analyze it in real-time.
Yes, there is a risk of server spoofing if the python application is using certificate hostnames and encounters specially-crafted certificates signed by a trusted Certification Authority.
Yes, the buffer overflow vulnerability in socket.recvfrom_into may lead to application crash and possibly code execution.
To fix the vulnerability, update the python2.6 package to version 2.6.6-8+deb6u3 or later. This can be done by running the package manager and installing the latest available version of python2.6.
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