CVE-2024-28868: UmbracoCMS User Enumeration Vulnerability
Summary
CVE-2024-28868: Umbraco possible user enumeration. Affects UmbracoCMS versions >= 10.0.0, < 10.8.5. Fixed in 10.8.5. How to fix ↓
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Background
UmbracoCMS is an open-source content management system (CMS) built on the .NET framework. It provides a flexible and customizable platform for creating and managing websites. UmbracoCMS includes a native login screen that allows users to authenticate and access the CMS. However, a vulnerability has been discovered in UmbracoCMS versions 10.0.0 to 10.8.4, which allows for user enumeration attacks. This means that an attacker can determine valid usernames by exploiting this vulnerability.
Vulnerability Detail
The user enumeration vulnerability in UmbracoCMS allows an attacker to determine valid usernames by exploiting the native login screen. By making multiple login attempts with different usernames, the attacker can observe the system's response and identify which usernames exist in the system. This information can be used for further targeted attacks, such as brute-forcing passwords or launching phishing campaigns. The vulnerability has a CVSS score of 3.7, indicating a low severity level.
How To Fix
Minimum fixed version
10.8.5
This is the first release that contains the fix.
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Workaround
If upgrading to the latest version is not immediately possible, a workaround is to disable the native login screen and exclusively use external logins. By removing the option for users to log in directly through the UmbracoCMS login screen, the vulnerability can be mitigated. This can be achieved by modifying the authentication settings or implementing a custom login solution.
Conclusion
The user enumeration vulnerability in UmbracoCMS can be mitigated by updating to version 10.8.5 or later. If immediate upgrading is not feasible, disabling the native login screen and relying on external logins can serve as a temporary workaround. For further assistance and support in addressing this vulnerability, please contact DevNack.com.
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FAQ
UmbracoCMS is an open-source content management system built on the .NET framework. It provides a flexible platform for creating and managing websites.
User enumeration is a technique used by attackers to determine valid usernames in a system. In the case of this vulnerability, an attacker can exploit the UmbracoCMS login screen to identify existing usernames.
The user enumeration vulnerability in UmbracoCMS can be used by attackers to gather information for targeted attacks. This includes brute-forcing passwords or launching phishing campaigns against known usernames.
To fix this vulnerability, it is recommended to update UmbracoCMS to version 10.8.5 or later. This version includes a patch that addresses the user enumeration issue.
Yes, if upgrading to the latest version is not immediately possible, a workaround is to disable the native login screen and exclusively use external logins. This can be achieved by modifying the authentication settings or implementing a custom login solution.
References
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