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TITLE:
Ruby on Rails Filter Bypass and SQL Injection Vulnerabilities

SECUNIA ADVISORY ID:
SA43278

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/43278/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=43278

RELEASE DATE:
2011-02-10

DISCUSS ADVISORY:
http://secunia.com/advisories/43278/#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/43278/

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=43278

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 bypass certain security
restrictions and conduct SQL injection attacks.

1) The filtering code does not properly work for case insensitive
file systems, which can be exploited to bypass the filter by e.g.
varying the case in certain action parameters.

Note: This only affects deployments on case insensitive file
systems.

2) Input passed to the "limit()" function is not properly sanitised
before being used in SQL queries. This can be exploited to manipulate
SQL queries by injecting arbitrary SQL code.

The vulnerabilities are reported in versions 3.0.0 through 3.0.3.

SOLUTION:
Update to version 3.0.4 or apply patches.

PROVIDED AND/OR DISCOVERED BY:
The vendor credits:
1) Jan M. Faber, supersaas
2) Eaden McKee, Webforce Ltd

ORIGINAL ADVISORY:
1)
http://groups.google.com/group/rubyonrails-security/browse_thread/thread/362f1fbc1761b336
2)
http://groups.google.com/group/rubyonrails-security/browse_thread/thread/b658902cf6bf4eed

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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Secunia NEVER sends attached files with advisories.
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