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The final version of the CSI 6.0 has been released. 
Find out why this is not just another Patch Management solution: http://secunia.com/blog/325/

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TITLE:
Ruby json Gem Document Parsing Vulnerability

SECUNIA ADVISORY ID:
SA52075

VERIFY ADVISORY:
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http://secunia.com/advisories/52075/
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https://ca.secunia.com/?page=viewadvisory&vuln_id=52075

RELEASE DATE:
2013-02-12

DISCUSS ADVISORY:
http://secunia.com/advisories/52075/#comments

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http://secunia.com/advisories/52075/

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https://ca.secunia.com/?page=viewadvisory&vuln_id=52075

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DESCRIPTION:
A vulnerability has been reported in the json gem for Ruby, which can
be exploited by malicious people to bypass certain security
restrictions.

The vulnerability is caused due to an input validation error within
the gem, which allows creating additions when parsing JSON documents.
This can be exploited to create arbitrary Ruby symbols and e.g. cause
a Denial of Service or execute arbitrary SQL code.

The vulnerability is reported in versions prior to 1.7.7, 1.6.8, and
1.5.5.

SOLUTION:
Update to version 1.7.7, 1.6.8, or 1.5.5.

PROVIDED AND/OR DISCOVERED BY:
Thomas Hollstegge, Zweitag.

The vendor also credits Ben Murphy.

ORIGINAL ADVISORY:
Ruby on Rails:
http://weblog.rubyonrails.org/2013/2/11/SEC-ANN-Rails-3-2-12-3-1-11-and-2-3-17-have-been-released/
https://groups.google.com/forum/?fromgroups=#!topic/rubyonrails-security/4_YvCpLzL58

Zweitag:
http://www.zweitag.de/en/blog/ruby-on-rails-vulnerable-to-mass-assignment-and-sql-injection

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

DEEP LINKS:
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EXTENDED DESCRIPTION:
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EXTENDED SOLUTION:
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EXPLOIT:
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