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TITLE:
Ruby WEBrick UTF-7 Error Message Cross-Site Scripting Vulnerability

SECUNIA ADVISORY ID:
SA41003

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/41003/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=41003

RELEASE DATE:
2010-08-16

DISCUSS ADVISORY:
http://secunia.com/advisories/41003/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
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http://secunia.com/advisories/41003/

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https://ca.secunia.com/?page=viewadvisory&vuln_id=41003

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http://secunia.com/vulnerability_scanning/personal/
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DESCRIPTION:
A vulnerability has been reported in Ruby WEBrick, which can be
exploited by malicious people to conduct cross-site scripting
attacks.

The vulnerability is caused due to an error in the Ruby WEBrick HTTP
server, which can be leveraged to generate error pages interpreted as
having an UTF-7 character set. This can be exploited to execute
arbitrary HTML and script code in a user's browser session in context
of an affected site.

This is related to vulnerability #20 in:
SA40220

The vulnerability is reported in Ruby version 1.8.6-p399 and prior,
Ruby 1.8.7-p299 and prior, and Ruby 1.9.1-p429 and prior.

SOLUTION:
Update or upgrade to a fixed version or apply patch.

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

PROVIDED AND/OR DISCOVERED BY:
The vendor credits Apple.

ORIGINAL ADVISORY:
http://www.ruby-lang.org/en/news/2010/08/16/xss-in-webrick-cve-2010-0541/

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:
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