ruby -- BigDecimal denial of service vulnerability

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”)