Vulnerability in python-bottle - CRLF Attacks via Redirections
Summary
DLA-761-1: python-bottle - security update. Affects python-bottle versions < 0.10.11-1+deb7u2. Fixed in 0.10.11-1+deb7u2. How to fix ↓
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Background
python-bottle is a WSGI-framework for the Python programming language. It provides a lightweight and efficient way to handle web requests and build web applications. The package is widely used in the Debian 7 Wheezy ecosystem. However, a security flaw has been discovered in python-bottle that allows for CRLF attacks via redirections. This vulnerability arises from the improper filtering of "\r\n" sequences when handling redirections.
Vulnerability Detail
The vulnerability in python-bottle allows an attacker to perform CRLF attacks, specifically HTTP header injection. By exploiting this flaw, an attacker can inject arbitrary headers into HTTP responses, potentially leading to various security issues such as cross-site scripting (XSS) attacks, cache poisoning, or session hijacking. This can have severe ramifications for the security and integrity of web applications utilizing python-bottle.
How To Fix
Minimum fixed version
0.10.11-1+deb7u2
This is the first release that contains the fix.
sudo apt-get install --only-upgrade python-bottleTip — 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. However, users can mitigate the risk by ensuring they have the latest version of python-bottle installed and promptly applying any security updates provided by the Debian project.
Conclusion
The vulnerability in python-bottle allows for CRLF attacks via redirections, potentially leading to various security issues. It is crucial to upgrade to the latest version of python-bottle (0.10.11-1+deb7u2 or later) to mitigate this vulnerability. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
python-bottle is a WSGI-framework for the Python programming language, designed to handle web requests and build web applications efficiently.
A CRLF attack, also known as an HTTP response splitting attack, involves injecting malicious headers into HTTP responses to manipulate the behavior of web applications and potentially exploit vulnerabilities.
This vulnerability can lead to various security issues, including cross-site scripting (XSS) attacks, cache poisoning, and session hijacking, compromising the security and integrity of web applications.
You can use Vulert's playground at Vulert Scanner to check if your application is affected by this vulnerability. Vulert monitors and alerts in real-time for open-source vulnerabilities without requiring access to the code or installation.
You can find more information about Debian LTS security advisories, including how to apply updates and frequently asked questions, at https://wiki.debian.org/LTS.
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