===============================
MyST BlogSite | Multiple Vulnerabilities
===============================


1. VULNERABILITY DESCRIPTION


--> Issue Title: Arbitrary URL Redirect
Component: MyST BlogSite ClickDirector

Ref: OWASP - Top 10 - 2010 - A10
Ref-Link: https://www.owasp.org/index.php/Top_10_2010-A10-Unvalidated_Redirects_and_Forwards

Proof-Of-Concept:
http://blogsite.com/public/click/~sites/attacker.in/malware_exists_in_this_page/
http://blog.cenzic.com/public/click/~sites/attacker.in/malware_exists_in_this_page/
[FIXED]


--> Issue Title: Information Leakage  
Ref: WASC-13
Ref-Link: http://projects.webappsec.org/w/page/13246936/Information-Leakage

This could be used to brute force (http://blogsite.com/login)

Proof-Of-Concept:
http://blogsite.com/public/mostl/1
http://blogsite.com/public/mostl/2
http://blogsite.com/public/my-account/1
http://blogsite.com/public/my-account/2
http://blogsite.com/public/object/1
http://blogsite.com/public/object/2
http://blogsite.com/public/object/3


--> Issue Title: Arbitrary Text Insertion

This could be used to deliver defamatory message to unaware users.

Proof-of-Concept:
http://blogsite.com/public/mostl-action/1?action=Browse&text=This%20blog%20was%200wned!



2. VENDOR

MyST Technology Partners, Inc.
http://myst-technology.com/


4. DISCLOSURE TIME-LINE

2011-04-17: reported vendor
2011-07-16: vulnerability found unfixed
2011-07-16: vulnerability disclosed  


5. REFERENCES

Original Advisory URL:
http://yehg.net/lab/pr0js/advisories/[MyST_BlogSite]_vulnerabilities_2011-07

#yehg [2011-07-16]