Critical Security Update for shadow-utils: Addressing Default Subordinate ID Configuration Vulnerability
Summary
ALSA-2025:20145: Low: shadow-utils security update. Affects shadow-utils versions < 2:4.15.0-8.el10. Fixed in 2:4.15.0-8.el10. How to fix ↓
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Background
The shadow-utils package is a crucial component in UNIX-like operating systems, providing essential utilities for managing user and group accounts, as well as converting traditional UNIX password files to the more secure shadow password format. This package is widely used in AlmaLinux 10, ensuring that user credentials are stored securely and efficiently. However, a recent vulnerability has been identified that could potentially compromise the security of user accounts if not addressed promptly.
Vulnerability Detail
The vulnerability, identified as CVE-2024-56433, arises from a default subordinate ID configuration in the /etc/login.defs file. This misconfiguration can lead to unauthorized access and manipulation of user accounts, posing a significant risk to system integrity and data security. Attackers could exploit this flaw to escalate privileges or gain unauthorized access to sensitive information, making it imperative for users to update their systems to mitigate this risk.
How To Fix
Minimum fixed version
2:4.15.0-8.el10
This is the first release that contains the fix.
sudo dnf update shadow-utilsTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary measure, users can manually review and modify the /etc/login.defs file to ensure that subordinate ID configurations are set appropriately. However, this is not a permanent solution, and updating the package is strongly recommended.
Conclusion
The shadow-utils package is essential for managing user accounts in UNIX-like systems, but the identified vulnerability (CVE-2024-56433) poses serious security risks. Users are strongly encouraged to update to the latest patched version to protect their systems from potential exploitation. Regular monitoring and updates are crucial for maintaining system security.
See every vulnerability recorded for shadow-utils →
FAQ
CVE-2024-56433 is a vulnerability in the shadow-utils package that stems from a default subordinate ID configuration, which could lead to unauthorized access to user accounts.
You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without requiring any signup.
The risks include potential unauthorized access to user accounts, privilege escalation, and manipulation of sensitive information, which could compromise system security.
Yes, a patch is available in the form of an updated version of the shadow-utils package (2:4.15.0-8.el10). Users should update their systems to this version.
If immediate updates are not possible, review and adjust the /etc/login.defs file to mitigate risks temporarily, but prioritize updating the package as soon as possible.
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