Information
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Advisory by Netsparker (now Invicti)
Name: Open Redirection Vulnerability in Orchard
Software: Orchard 1.3.9 and below.
Vendor Homepage: http://orchardproject.net
Vulnerability Type: Open Redirection
Severity: Medium
Researcher: Mesut Timur
Advisory Reference: NS-12-002

Description
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Orchard is a free, open-source, community-focused project aimed at delivering applications and reusable components on the ASP.NET platform.

Details
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Orchard is affected by an Open Redirection vulnerability in version 1.3.9.
Example PoC URLs are as follows :

http://www.example.com/orchard/Users/Account/LogOff?ReturnUrl=%2f%2fwww.netsparker.com%3f

You can read the full article about Open Redirection vulnerability.

Solution
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Upgrade to the latest Orchard version (1.3.10).

Credits
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It has been discovered on testing of Invicti Web Application Security Scanner.

References
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About Invicti
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Invicti Security is transforming the way web applications are secured. Invicti empowers organizations in every industry to scale their overall security operations, make the best use of their security resources, and engage developers in helping to improve their overall security posture.