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TITLE:
Ruby BigDecimal Denial of Service Vulnerability

SECUNIA ADVISORY ID:
SA35399

VERIFY ADVISORY:
http://secunia.com/advisories/35399/

DESCRIPTION:
A vulnerability has been reported in Ruby, which can be exploited by
malicious people to cause a DoS (Denial of Service).

The vulnerability is caused due to an error within the BigDecimal
standard library when trying to e.g. convert BigDecimal objects into
floating point numbers. This can be exploited to crash an application
using this library.

The vulnerability is reported in 1.8.6-p368 and all prior versions
and 1.8.7-p160 and all prior versions.

SOLUTION:
Update to version 1.8.6-p369 or 1.8.7-p173.

Ruby 1.8.6-p369:
ftp://ftp.ruby-lang.org/pub/ruby/1.8/ruby-1.8.6-p369.tar.gz

Ruby 1.8.7-p173:
ftp://ftp.ruby-lang.org/pub/ruby/1.8/ruby-1.8.7-p173.tar.gz

PROVIDED AND/OR DISCOVERED BY:
tadayoshi funaba

ORIGINAL ADVISORY:
http://www.ruby-lang.org/en/news/2009/06/09/dos-vulnerability-in-bigdecimal/

http://redmine.ruby-lang.org/issues/show/794

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