Open Redirect Vulnerability in python-aiohttp: USN-5386-1
Summary
USN-5386-1: python-aiohttp vulnerability. Affects python-aiohttp versions < 3.0.1-1ubuntu0.1~esm1. Fixed in 3.0.1-1ubuntu0.1~esm1. How to fix ↓
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Background
python-aiohttp is an asynchronous HTTP client/server framework for Python, designed to provide a simple and efficient way to handle HTTP requests and responses. It is widely used in web applications for its non-blocking capabilities, allowing for high performance and scalability. However, a recently discovered vulnerability exposes it to potential open redirect attacks, which could be exploited by malicious actors.
Vulnerability Detail
The vulnerability, identified as CVE-2021-21330, was discovered by Jelmer Vernooij and Beast Glatisant. It arises from the incorrect handling of certain URLs within the AIOHTTP framework, leading to an open redirect issue. This flaw allows a remote attacker to manipulate URLs, potentially redirecting users to malicious sites, thereby facilitating phishing attacks. The risk is particularly significant as it can compromise user data and trust in applications utilizing the affected package.
How To Fix
Minimum fixed version
3.0.1-1ubuntu0.1~esm1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade python-aiohttpTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary measure, it is advisable to validate and sanitize all user inputs and URLs before processing them within your application. This can help mitigate the risk of open redirect attacks until the package is updated. Implementing strict URL whitelisting can also be an effective strategy.
Conclusion
The python-aiohttp package has a critical vulnerability that could lead to open redirect attacks, posing significant risks to users and applications. It is crucial to update to the patched versions provided by Ubuntu Pro to mitigate these risks. Additionally, employing workarounds can help protect applications until updates are applied.
See every vulnerability recorded for python-aiohttp →
FAQ
An open redirect vulnerability occurs when an application accepts a user-controlled input that specifies a URL to redirect to, allowing attackers to redirect users to malicious sites.
You can check if your application is affected by using Vulert, which monitors and alerts for open-source vulnerabilities. You can use the Vulert playground to analyze your manifest file without any signup.
If exploited, this vulnerability can lead to phishing attacks, where users are redirected to malicious sites, potentially compromising their sensitive information.
Yes, patches are available for the affected versions of python-aiohttp. Users are encouraged to update to the latest patched versions as soon as possible.
If immediate updates are not possible, implement input validation and URL whitelisting as a temporary workaround to reduce the risk of exploitation.
References
Related vulnerabilities
Recent vulnerabilities recorded for python-aiohttp.
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