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TITLE:
Ruby on Rails Cross-Site Scripting and Cross-Site Request Forgery
Vulnerabilities

SECUNIA ADVISORY ID:
SA43274

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/43274/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=43274

RELEASE DATE:
2011-02-10

DISCUSS ADVISORY:
http://secunia.com/advisories/43274/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
 * Last Update
 * Popularity
 * Comments
 * Criticality Level
 * Impact
 * Where
 * Solution Status
 * Operating System / Software
 * CVE Reference(s)

http://secunia.com/advisories/43274/

ONLY AVAILABLE IN CUSTOMER AREA:
 * Authentication Level
 * Report Reliability
 * Secunia PoC
 * Secunia Analysis
 * Systems Affected
 * Approve Distribution
 * Remediation Status
 * Secunia CVSS Score
 * CVSS

https://ca.secunia.com/?page=viewadvisory&vuln_id=43274

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
 * AUTOMATED SCANNING

http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/

DESCRIPTION:
Some vulnerabilities have been reported in Ruby on Rails, which can
be exploited by malicious people to conduct cross-site scripting and
cross-site request forgery attacks.

1) Input passed via e.g. the name or email value to the mail_to
helper using the :encode => :javascript option is not properly
sanitised before being used. This can be exploited to e.g. execute
arbitrary HTML and script code in a user's browser session in context
of an affected site.

2) The cross-site request forgery protection does not properly
validate AJAX and API requests, which can be exploited to conduct
cross-site request forgery attacks by using certain browser plugins
and HTTP redirects to send cross-domain HTTP requests with spoofed
headers.

SOLUTION:
Update to version 2.3.11 or 3.0.4 or apply patches.

PROVIDED AND/OR DISCOVERED BY:
The vendor credits:
1) Brendan Coles, IT Security Solutions and Rick Olson, Github.
2) Felix Gröbert, Google Security Team

ORIGINAL ADVISORY:
1)
http://groups.google.com/group/rubyonrails-security/browse_thread/thread/f02a48ede8315f81
2)
http://groups.google.com/group/rubyonrails-security/browse_thread/thread/2d95a3cc23e03665
http://weblog.rubyonrails.org/2011/2/8/csrf-protection-bypass-in-ruby-on-rails

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

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About:
This Advisory was delivered by Secunia as a free service to help
private users keeping their systems up to date against the latest
vulnerabilities.

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use those supplied by the vendor.

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