Critical Vulnerabilities in Ruby Packages: ruby1.9.1, ruby2.0, ruby2.3, ruby2.5
Summary
USN-3945-1: ruby1.9.1, ruby2.0, ruby2.3, ruby2.5 vulnerabilities. Affects ruby1.9.1 versions < 1.9.3.484-2ubuntu1.14. Fixed in 1.9.3.484-2ubuntu1.14. How to fix ↓
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Background
Ruby is a dynamic, open-source programming language known for its simplicity and productivity. It is widely used for web development and has a rich ecosystem of libraries and frameworks. The affected packages, ruby1.9.1, ruby2.0, ruby2.3, and ruby2.5, are versions of the Ruby interpreter that allow developers to run Ruby code. These versions have been found to contain vulnerabilities that could lead to arbitrary code execution, posing significant security risks to applications relying on them.
Vulnerability Detail
The vulnerabilities stem from improper handling of certain RubyGems and inputs within the Ruby interpreter. Specifically, CVE-2019-8320 allows attackers to execute arbitrary commands, while CVE-2019-8321 through CVE-2019-8325 expose the interpreter to potential arbitrary code execution. These vulnerabilities can be exploited by attackers to compromise systems running affected Ruby versions, leading to unauthorized access and data breaches.
How To Fix
Minimum fixed version
1.9.3.484-2ubuntu1.14
This is the first release that contains the fix.
sudo apt-get install --only-upgrade ruby1.9.1Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If immediate patching is not feasible, consider isolating the affected applications from untrusted inputs or limiting their execution environment to mitigate the risk of exploitation. Additionally, monitor application logs for any suspicious activity that may indicate an attempted exploit.
Conclusion
The vulnerabilities in Ruby packages ruby1.9.1, ruby2.0, ruby2.3, and ruby2.5 pose significant security risks due to potential arbitrary code execution. It is essential to update these packages to their patched versions promptly to safeguard applications from exploitation. Utilizing tools like Vulert can help monitor for such vulnerabilities effectively.
See every vulnerability recorded for ruby1.9.1 →
FAQ
The affected versions include ruby1.9.1, ruby2.0, ruby2.3, and ruby2.5.
Attackers can exploit these vulnerabilities to execute arbitrary commands or code, potentially compromising the system.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in your software. Visit Vulert Scanner to check your application without needing to sign up.
Yes, you can isolate affected applications and monitor logs for suspicious activity as a temporary measure.
Keeping Ruby updated is crucial to protect against known vulnerabilities and ensure the security and stability of applications.
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