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TITLE:
Ruby "ARGF.inplace_mode" Buffer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA40442

VERIFY ADVISORY:
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http://secunia.com/advisories/40442/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=40442

RELEASE DATE:
2010-07-07

DISCUSS ADVISORY:
http://secunia.com/advisories/40442/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
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http://secunia.com/advisories/40442/

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https://ca.secunia.com/?page=viewadvisory&vuln_id=40442

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DESCRIPTION:
A weakness has been reported in Ruby, which can be exploited by
malicious, local users to bypass certain security restrictions.

The weakness is caused due to a boundary error within the filename
handling on Windows systems, which can be exploited to cause a buffer
overflow by e.g. assigning a specially crafted value to the
"ARGF.inplace_mode" variable.

The weakness is reported in Ruby 1.9.1 patchlevel 378 on Windows
systems. Other versions may also be affected.

SOLUTION:
Update to version 1.9.1-p429.

PROVIDED AND/OR DISCOVERED BY:
The vendor credits Masaya TARUI.

ORIGINAL ADVISORY:
http://www.ruby-lang.org/en/news/2010/07/02/ruby-1-9-1-p429-is-released/

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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