Memory Management Vulnerability in Tinyproxy: CVE-2022-40468
Summary
USN-7140-2: tinyproxy vulnerability. Affects tinyproxy versions < 1.8.3-3ubuntu14.04.1~esm2. Fixed in 1.8.3-3ubuntu14.04.1~esm2. How to fix ↓
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Background
Tinyproxy is a lightweight HTTP/HTTPS proxy daemon designed to be fast and efficient. It is commonly used to provide web access to clients while maintaining privacy and security. Tinyproxy allows users to configure custom error pages, which can enhance user experience. However, it has been found to have a vulnerability that affects its memory management, leading to potential data leaks.
Vulnerability Detail
The vulnerability, identified as CVE-2022-40468, arises from Tinyproxy's improper management of memory under specific conditions. This flaw can be exploited by an attacker to leak sensitive heap data when custom error page templates containing non-standard variables are utilized. The implications of this vulnerability are significant, as it could expose sensitive information and compromise the security of the system running Tinyproxy.
How To Fix
Minimum fixed version
1.8.3-3ubuntu14.04.1~esm2
This is the first release that contains the fix.
sudo apt-get install --only-upgrade tinyproxyTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a workaround, consider disabling the use of custom error page templates until the package is updated to the patched version. This can help mitigate the risk of data leakage while maintaining basic functionality.
Conclusion
The vulnerability CVE-2022-40468 in Tinyproxy poses a significant risk due to improper memory management, potentially leading to data leaks. It is crucial to update to the patched version to secure your system. Utilizing tools like Vulert can help in monitoring and managing vulnerabilities effectively.
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FAQ
CVE-2022-40468 is a vulnerability in Tinyproxy that allows attackers to potentially leak sensitive heap data due to improper memory management.
You can check your version of Tinyproxy by running 'tinyproxy -v' in your terminal. If it is below 1.8.3-3ubuntu14.04.1~esm2, it is affected.
The primary risk is the potential exposure of sensitive information stored in memory, which could be exploited by attackers to gain unauthorized access to data.
Yes, you can use Vulert, which monitors and alerts for open-source vulnerabilities in your software using a manifest file like package-lock.json. You can check your application for vulnerabilities using the Vulert playground without signup.
If immediate updates are not possible, disable custom error pages as a temporary workaround to reduce the risk of exploitation.
References
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