Critical Remote Code Execution Vulnerability in GNU Guile Package
Summary
ALPINE-CVE-2016-8606: The REPL server (--listen) in GNU Guile 2.0.12 allows an attacker to execute arbitrary code via an HTTP inter-protocol attack. Affects guile versions < 2.0.11-r3. Fixed in 2.0.11-r3. How to fix ↓
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Background
GNU Guile is an implementation of the Scheme programming language and serves as an extension language for various applications. It provides a powerful REPL (Read-Eval-Print Loop) server that allows users to interact with the language in real-time. However, a critical vulnerability has been identified in version 2.0.12 of Guile, which exposes users to potential remote code execution attacks.
Vulnerability Detail
The vulnerability arises from the REPL server's '--listen' option, which allows it to accept HTTP requests. An attacker can exploit this feature to execute arbitrary code on the server, leading to severe consequences such as data breaches, unauthorized access, and system compromise. The vulnerability is classified under CVE-2016-8606 and has a CVSS score of 9.8, indicating its critical severity.
How To Fix
Minimum fixed version
2.0.11-r3
This is the first release that contains the fix.
sudo apk add --upgrade guileTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If immediate updating is not feasible, consider disabling the REPL server or restricting access to it to trusted networks only. This can help mitigate the risk of exploitation until the package can be updated.
Conclusion
The identified vulnerability in GNU Guile poses a significant risk to users due to its potential for remote code execution. It is crucial to update to the patched version to safeguard against exploitation. Additionally, utilizing tools like Vulert can help monitor and manage vulnerabilities effectively.
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FAQ
CVE-2016-8606 is a vulnerability in GNU Guile that allows remote code execution through its REPL server.
You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without any signup.
The vulnerability can lead to unauthorized access, data breaches, and complete system compromise.
Yes, the patched version of GNU Guile is 2.0.11-r3. Updating to this version will fix the vulnerability.
Vulert monitors and alerts for open-source vulnerabilities in software using a manifest file like package-lock.json, providing real-time insights into potential risks.
References
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