Ruby: Security bypass vulnerability

Background

Ruby is an interpreted scripting language for quick and easy object-oriented programming. Ruby supports the safe execution of untrusted code using a safe level and taint flag mechanism.

Description

Dr. Yutaka Oiwa discovered that Ruby fails to properly enforce safe level protections.

Impact

An attacker could exploit this vulnerability to execute arbitrary code beyond the restrictions specified in each safe level.

Workaround

There is no known workaround at this time.

Resolution

All Ruby users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=dev-lang/ruby-1.8.3"