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ruby-gems -- Algorithmic Complexity Vulnerability

Description:

Ruby Gem developers report:

The patch for CVE-2013-4363 was insufficiently verified so the combined regular expression for verifying gem version remains vulnerable following CVE-2013-4363.

RubyGems validates versions with a regular expression that is vulnerable to denial of service due to backtracking. For specially crafted RubyGems versions attackers can cause denial of service through CPU consumption.

References:

Affects:

portaudit: ruby-gems -- Algorithmic Complexity Vulnerability

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Oliver Eikemeier <eik@FreeBSD.org>