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Related Vulnerabilities: CVE-2013-4287

Algorithmic complexity vulnerability in Gem::Version::VERSION_PATTERN in lib/rubygems/version.rb in RubyGems before 1.8.23.1, 1.8.24 through 1.8.25, 2.0.x before 2.0.8, and 2.1.x before 2.1.0, as used in Ruby 1.9.0 through 2.0.0p247, allows remote attackers to cause a denial of service (CPU consumption) via a crafted gem version that triggers a large amount of backtracking in a regular expression.

Source

ALAS-2013-230

Amazon Linux AMI Security Advisory: ALAS-2013-230
Advisory Release Date: 2013-09-26 22:22 Pacific
Advisory Updated Date: 2014-09-16 21:40 Pacific

Severity: Medium

References: CVE-2013-4287

Issue Overview:

Algorithmic complexity vulnerability in Gem::Version::VERSION_PATTERN in lib/rubygems/version.rb in RubyGems before 1.8.23.1, 1.8.24 through 1.8.25, 2.0.x before 2.0.8, and 2.1.x before 2.1.0, as used in Ruby 1.9.0 through 2.0.0p247, allows remote attackers to cause a denial of service (CPU consumption) via a crafted gem version that triggers a large amount of backtracking in a regular expression.

Affected Packages:

rubygems

Issue Correction:
Run yum update rubygems to update your system.

New Packages:

noarch:
    rubygems-devel-1.8.25-7.12.amzn1.noarch
    rubygems-1.8.25-7.12.amzn1.noarch

src:
    rubygems-1.8.25-7.12.amzn1.src

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ALAS-2013-230

ALAS-2013-230

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