Latent Entropy Vulnerability in gcc-plugins
Summary
GSD-2022-1001951: gcc-plugins: latent_entropy: use /dev/urandom. Affects Kernel versions >= 38addce8b600ca335dc86fa3d48c890f1c6fa1f4, < cc21ae932656483b07982afcec7e38a5bd6acc0c. No fix is published. How to fix ↓
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Background
gcc-plugins is a collection of plugins for the GNU Compiler Collection (GCC) that provide additional functionality and analysis capabilities. These plugins can be used to enhance the compilation process and perform various optimizations. The latent_entropy plugin, included in gcc-plugins, aims to improve the entropy of random number generation in the Linux Kernel. However, a vulnerability has been discovered in the plugin's usage of /dev/urandom.
Vulnerability Detail
The latent_entropy plugin in gcc-plugins uses /dev/urandom for random number generation. However, /dev/urandom may not provide sufficient entropy in certain scenarios, potentially leading to weak random numbers. This vulnerability could be exploited by an attacker to predict or manipulate the random numbers generated by the Linux Kernel, compromising the security of cryptographic operations, key generation, and other sensitive processes.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
If updating the Linux Kernel is not immediately feasible, a temporary workaround is to use a different source of random numbers for the latent_entropy plugin. One possible alternative is to modify the plugin's code to use /dev/random instead of /dev/urandom. However, this workaround may impact performance and should only be considered as a temporary solution until the Kernel can be updated.
Conclusion
The latent_entropy vulnerability in gcc-plugins exposes a weakness in the random number generation of the Linux Kernel. It is crucial to update the Kernel to the recommended version or apply the temporary workaround to mitigate the risk. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
gcc-plugins is a collection of plugins for the GNU Compiler Collection (GCC) that provide additional functionality and analysis capabilities.
The latent_entropy plugin is a part of gcc-plugins and aims to improve the entropy of random number generation in the Linux Kernel.
/dev/urandom is a special file in Unix-like operating systems that provides a source of random numbers. It is often used for cryptographic operations and other security-sensitive processes.
This vulnerability could allow an attacker to predict or manipulate the random numbers generated by the Linux Kernel, compromising the security of cryptographic operations, key generation, and other sensitive processes.
To fix this vulnerability, update the Linux Kernel to version v5.10.112 or later. This ensures that the latent_entropy plugin uses a more secure source of random numbers.
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