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>> Ruby on Rails CgiRequest Constructor "cookie_only" Session Fixation Issue

Title : Ruby on Rails CgiRequest Constructor "cookie_only" Session Fixation Issue
VUPEN ID : VUPEN/ADV-2007-4009
CVE ID : CVE-2007-6077
Rated as : Low Risk 
Remotely Exploitable : Yes
Locally Exploitable : Yes
Release Date : 2007-11-27


Technical Description    Receive VUPEN Security alerts in a Text format  Receive VUPEN Security alerts in a PDF format  Receive VUPEN Security alerts in an XML format 

A vulnerability has been identified in Ruby on Rails, which could be exploited by attackers to bypass security restrictions. This issue is caused by an error in the CgiRequest constructor [lib/action_controller/cgi_process.rb] that removes the ":cookie_only" attribute from "DEFAULT_SESSION_OPTIONS", which could potentially be exploited to conduct session fixation attacks and gain unauthorized access to an affected application.

Affected Products

Ruby on Rails version 1.2.5 and prior

Solution

Upgrade to Ruby on Rails version 1.2.6 :
http://www.rubyonrails.org/down

References

http://www.vupen.com/english/advisories/2007/4009
http://weblog.rubyonrails.org/2007/11/24/ruby-on-rails-1-2-6-security-and-maintenance-release
http://dev.rubyonrails.org/ticket/10048

Credits

Vulnerability reported by sameer.

ChangeLog

2007-11-27 : Initial release

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