CVE-2017-14920: eGroupware Community Edition Stored XSS vulnerability
Summary
CVE-2017-14920: eGroupware Community Edition Stored XSS vulnerability. Affects egroupware/egroupware versions < 16.1.20170922. Fixed in 16.1.20170922. How to fix ↓
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Background
eGroupware Community Edition is an open-source groupware software that provides collaboration and productivity tools for businesses. It offers features such as email, calendar, address book, file management, and project management. The vulnerability in question is a stored cross-site scripting (XSS) vulnerability that affects versions of eGroupware Community Edition prior to 16.1.20170922. This vulnerability allows an unauthenticated remote attacker to inject malicious JavaScript code via the User-Agent HTTP header. The application administrator mishandles the injected code during rendering, leading to potential security risks.
Vulnerability Detail
The stored XSS vulnerability in eGroupware Community Edition allows an attacker to inject JavaScript code through the User-Agent HTTP header. This header is not properly sanitized or validated by the application, allowing the attacker to execute arbitrary code within the context of the application administrator. This can lead to various security risks, including unauthorized access, data theft, and potential compromise of the entire application. The vulnerability has a CVSS score of 6.1, indicating a moderate severity level.
How To Fix
Minimum fixed version
16.1.20170922
This is the first release that contains the fix.
composer require egroupware/egroupware:16.1.20170922Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary workaround, it is advised to implement a web application firewall (WAF) that can detect and block malicious requests containing JavaScript code in the User-Agent header. Additionally, organizations can consider filtering or blocking requests with suspicious User-Agent values until the application is upgraded to a patched version.
Conclusion
The stored XSS vulnerability in eGroupware Community Edition poses a moderate security risk, allowing an attacker to inject malicious JavaScript code. To mitigate this vulnerability, it is essential to upgrade to version 16.1.20170922 or later. Implementing a web application firewall (WAF) can provide temporary protection until the upgrade is performed. For further assistance and support in vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability allows an attacker to inject malicious JavaScript code, potentially leading to unauthorized access, data theft, and compromise of the application.
Users of eGroupware Community Edition versions prior to 16.1.20170922 are affected by this vulnerability.
No, authentication is not required. An unauthenticated remote attacker can exploit this vulnerability.
Upgrading to version 16.1.20170922 or later of eGroupware Community Edition is the recommended mitigation. Implementing a web application firewall (WAF) can also provide temporary protection.
There is no evidence of active exploits targeting this vulnerability at the moment. However, it is crucial to apply the recommended fixes to prevent potential attacks.
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