Moderate Security Vulnerability in Ruby Packages: Denial of Service Risks
Summary
ALSA-2025:23141: Moderate: ruby security update. Affects ruby versions < 3.3.10-11.el10_1. Fixed in 3.3.10-11.el10_1. How to fix ↓
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Background
Ruby is an extensible, interpreted, object-oriented scripting language widely used for web development and system management tasks. It features a rich ecosystem of libraries and gems that enhance its capabilities. However, certain gems, such as 'resolv' and 'rexml', have been found to be vulnerable to Denial of Service (DoS) attacks, which can disrupt the normal functioning of applications relying on these packages.
Vulnerability Detail
The identified vulnerabilities in Ruby packages stem from flaws in the 'resolv' and 'rexml' gems. Specifically, CVE-2025-24294 in the 'resolv' gem allows attackers to exploit the system's DNS resolution capabilities, potentially leading to a Denial of Service condition. Similarly, CVE-2025-58767 in the 'rexml' gem can be exploited to cause excessive resource consumption, resulting in application crashes or slowdowns. These vulnerabilities can severely impact the availability of applications that depend on these gems, making them critical to address.
How To Fix
Minimum fixed version
3.3.10-11.el10_1
This is the first release that contains the fix.
sudo dnf update rubyTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If immediate updates cannot be applied, consider implementing rate limiting on DNS queries and monitoring resource usage for applications using the affected gems. This can help mitigate the impact of potential DoS attacks until the packages are updated.
Conclusion
The vulnerabilities identified in Ruby packages pose significant risks, particularly in terms of Denial of Service attacks. It is crucial for developers and system administrators to update their Ruby installations and related gems to the latest patched versions to mitigate these risks effectively. Utilizing tools like Vulert can further enhance security by providing real-time monitoring of open-source vulnerabilities.
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FAQ
A Denial of Service attack aims to make a service unavailable to its intended users by overwhelming it with traffic or exploiting vulnerabilities.
You can use Vulert, which monitors open-source vulnerabilities in your software. By uploading your manifest file, such as package-lock.json, you can receive real-time alerts about vulnerabilities.
Failure to address this vulnerability may lead to application downtime, degraded performance, and potential data loss, impacting user experience and trust.
Yes, once the packages are updated to the patched versions, they should be safe to use. Regular updates and monitoring are recommended to maintain security.
Detailed information can be found on the CVE pages for CVE-2025-24294 and CVE-2025-58767, which provide insights into the vulnerabilities and their impacts.
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