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Trend WebReputation 10.5 API Circumvention

Trend WebReputation 10.5 API Circumvention
Posted Mar 15, 2011
Authored by Ewerson Guimaraes | Site dclabs.com.br

The Trend WebReputation API suffers from a download content-filter circumvention vulnerability when appending a question mark to the end of any URL. Version 10.5 is affected.

tags | exploit
SHA-256 | 0283343c5093599e9f44ef94b2a29bacbeb8361d681b1cb597d29f2a9f767043

Trend WebReputation 10.5 API Circumvention

Change Mirror Download
[DCA-2011-0004]


[Discussion]
- DcLabs Security Research Group advises about following vulnerability(ies):


[Software]
- Trend WebReputation API

[Vendor Product Description]
- Secure any endpoint – physical or virtual – with the industry’s strongest,
most reliable protection, while reducing the impact on your endpoint resources.
Harness the power of the cloud with to-the-second protection from the
Trend Micro Smart Protection Network.
Ground-breaking new virtualization awareness delivers the latest
endpoint solutions along with
peace of mind and innovative resource-saving technology to help you
defend against zero day threats with optional virtual patching.
- Source:http://us.trendmicro.com/us/products/enterprise/officescan/index.html


[Advisory Timeline]
- Advisory sent to vendor: 15/Feb/2011
- Vendor said there is no failure 15/Feb/2011
- Advisory sent again with demo video: 16/Feb/2011
- Vendor confirmed the bug 16/Feb/2011
- Vendor fixed the bug 17/Feb/2011
- Advisory coordinated to be published 18/Feb/2011
- Published 14/Mar/2011



[Bug Summary]
- Download content-filter circumvent

[Impact]
- Medium

[Affected Version]
- 10.5
- Prior versions can also be affected but wasn't tested.

[Bug Description and Proof of Concept]
- Web Reputation download filter can be easily circumvented by adding
a @ or a'question mark' (?) at the end of URL.

POC:
URL Blocked

The URL that you are attempting to access is a potential security
risk. Trend Micro OfficeScan has blocked this URL
in keeping with network security policy.

URL: http://nmap.org/dist/nmap-5.51-setup.exe
Risk Level: Dangerous
Details: Verified fraud page or threat source


Just put ? in end:
http://nmap.org/dist/nmap-5.51-setup.exe?

Download successful

Second POC:
Demo Video: http://www.youtube.com/watch?v=J2Nd3wNWXPU

All flaws described here were discovered and researched by:
Ewerson Guimaraes (Crash)
DcLabs Security Research Group
crash <AT> dclabs <DOT> com <DOT> br

[Workarounds]
-

[Credits]
DcLabs Security Research Group.

--
Ewerson Guimaraes (Crash)
Pentester/Researcher
DcLabs Security Team
www.dclabs.com.br
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