CVE-2013-4287

Severity: medium (CVSS 4.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2013-10-17 · updated 2026-06-16
Weakness: CWE-310

Description

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 products

Red Hat Enterprise Linux: 6.0
Ruby: 1.9, 1.9.1, 1.9.2, 1.9.3, 1.9.3-p0, 1.9.3-p125 (+16)
rubygems: through 1.8.23; 1.8.0, 1.8.1, 1.8.2, 1.8.3, 1.8.4, 1.8.5 (+29)

References

http://blog.rubygems.org/2013/09/09/CVE-2013-4287.html
http://rhn.redhat.com/errata/RHSA-2013-1427.html
http://rhn.redhat.com/errata/RHSA-2013-1441.html
http://rhn.redhat.com/errata/RHSA-2013-1523.html
http://rhn.redhat.com/errata/RHSA-2013-1852.html
http://rhn.redhat.com/errata/RHSA-2014-0207.html
http://secunia.com/advisories/55381
http://www.openwall.com/lists/oss-security/2013/09/10/1
https://puppet.com/security/cve/cve-2013-4287
http://blog.rubygems.org/2013/09/09/CVE-2013-4287.html
http://rhn.redhat.com/errata/RHSA-2013-1427.html
http://rhn.redhat.com/errata/RHSA-2013-1441.html

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