Denial of Service Vulnerability in OTRS2: Ticket Age Search Misconfiguration
Summary
DEBIAN-CVE-2010-4759: Open Ticket Request System (OTRS) before 3.0.0-beta7 does not properly restrict the ticket ages that are within the scope of a search, which allows remote authenticated users to cause a denial of service (daemon hang) vi... Affects otrs2 versions < 3.0.8+dfsg1-1. Fixed in 3.0.8+dfsg1-1. How to fix ↓
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Background
Open Ticket Request System (OTRS) is a widely used open-source ticketing system that helps organizations manage customer support requests efficiently. It provides features such as ticket tracking, automated responses, and reporting tools. However, prior to version 3.0.0-beta7, OTRS2 had a vulnerability that allowed authenticated users to exploit the system's search functionality, leading to potential service disruptions.
Vulnerability Detail
The vulnerability arises from improper restrictions on ticket ages during search operations in OTRS2 versions before 3.0.0-beta7. This flaw allows remote authenticated users to perform full-text searches that could cause the OTRS daemon to hang, resulting in a denial of service. The issue stems from the way the system handles search queries, which can be manipulated to overload the server.
How To Fix
Minimum fixed version
3.0.8+dfsg1-1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade otrs2Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary workaround, administrators can limit the access of authenticated users to the search functionality or implement rate limiting on search queries to prevent abuse until the system can be updated.
Conclusion
The OTRS2 vulnerability identified as CVE-2010-4759 poses a significant risk of denial of service due to improper handling of ticket age searches. It is crucial for users of affected versions to update to the latest patched version to ensure system stability and security. Utilizing tools like Vulert can help monitor for such vulnerabilities in real-time.
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FAQ
The vulnerability can lead to a denial of service, causing the OTRS daemon to hang and making the ticketing system unavailable to users.
Any organization using OTRS2 versions prior to 3.0.0-beta7 is at risk, particularly those with remote authenticated users.
You can use Vulert's playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.
Yes, you can limit user access to the search functionality or implement rate limiting to reduce the risk of exploitation.
If immediate updates are not possible, consider applying the mentioned workarounds and monitor your system closely for any unusual activity.
References
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