Moderate Security Vulnerability in Python 3.12: Header Injection and Command Injection Issues
Summary
ALSA-2026:4463: Moderate: python3.12 security update. Affects python3.12 versions < 3.12.12-3.el8_10. Fixed in 3.12.12-3.el8_10. How to fix ↓
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Background
Python 3.12 is an interpreted, interactive, object-oriented programming language that supports modules, classes, exceptions, and dynamic data types. It is widely used for various applications, from web development to data analysis. However, recent security vulnerabilities have been identified that could allow attackers to exploit certain functionalities within the language, particularly in its handling of headers and commands.
Vulnerability Detail
The identified vulnerabilities in Python 3.12 include header newline injection in the wsgiref.headers module, IMAP command injection in user-controlled commands, POP3 command injection in user-controlled commands, and email header injection due to unquoted newlines. These vulnerabilities can lead to unauthorized access, data leakage, or manipulation of email headers, posing significant risks to applications relying on Python for email and network communications.
How To Fix
Minimum fixed version
3.12.12-3.el8_10
This is the first release that contains the fix.
sudo dnf update python3.12Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary measure, avoid using user-controlled inputs in IMAP and POP3 commands, and sanitize any headers to prevent newline injections. Implement strict validation of inputs to mitigate risks until the package is updated.
Conclusion
The vulnerabilities identified in Python 3.12 pose significant security risks that can be exploited through header and command injections. It is crucial for users to update to the latest patched version to safeguard their applications. Additionally, implementing input validation can serve as a temporary measure until the update is applied.
See every vulnerability recorded for python3.12 →
FAQ
The vulnerabilities involve header injection and command injection, which can be exploited through user-controlled inputs.
You can use the Vulert playground at Vulert Scanner to check if your application is affected by these vulnerabilities without needing to sign up.
Exploitation of these vulnerabilities can lead to unauthorized access, data leakage, or manipulation of email headers, which can compromise application security.
Yes, a patch is available in version 3.12.12-3.el8_10 of Python 3.12. It is recommended to update to this version.
If immediate updates are not possible, implement input validation and sanitization as a temporary workaround to mitigate risks.
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