CVE-2013-4363
RubyGems Regular Expression Denial of Service
EPSS 0.59%
Description
Algorithmic complexity vulnerability in Gem::Version::ANCHORED_VERSION_PATTERN in lib/rubygems/version.rb in RubyGems before 1.8.23.2, 1.8.24 through 1.8.26, 2.0.x before 2.0.10, and 2.1.x before 2.1.5, 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. NOTE: this issue is due to an incomplete fix for CVE-2013-4287.
How to fix CVE-2013-4363
To remediate CVE-2013-4363, upgrade the affected package to a fixed version below.
- —upgrade to 3.2.0~rc.1-1 or later
- —upgrade to 1.8.23.2 or later
Is CVE-2013-4363 being exploited?
Low — EPSS is 0.6%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 3.2.0~rc.1-1
- from 0, < 1.8.23.2