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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.

Subscribe:
http://secunia.com/advisories/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/advisories/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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