ruby -- BigDecimal denial of service vulnerability

Description:

The official ruby site reports:

A denial of service (DoS) vulnerability was found on the BigDecimal standard library of Ruby. Conversion from BigDecimal objects into Float numbers had a problem which enables attackers to effectively cause segmentation faults.

An attacker can cause a denial of service by causing BigDecimal to parse an insanely large number, such as:

BigDecimal("9E69999999").to_s("F")

References:

• BugTraq ID 35278
• CVE name CVE-2009-1904
• URL: <http://www.ruby-lang.org/en/news/2009/06/09/dos-vulnerability-in-bigdecimal/>

Affects:

• ruby >=1.8.*,1 <1.8.7.160_1,1
• ruby+pthreads >=1.8.*,1 <1.8.7.160_1,1
• ruby+pthreads+oniguruma >=1.8.*,1 <1.8.7.160_1,1
• ruby+oniguruma >=1.8.*,1 <1.8.7.160_1,1

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