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CVE-2013-4287

15
FAUCET Score

CVE-2013-4287 is an algorithmic complexity vulnerability in RubyGems, specifically affecting the Gem::Version::VERSION_PATTERN regular expression, present in various RubyGems and Ruby versions. This flaw allows a remote attacker to trigger a denial of service by providing a specially crafted gem version string that causes excessive CPU consumption due to regular expression backtracking. Rated with a CVSS score of 4.3, it is a medium-complexity attack that can be executed remotely without authentication, leading to partial availability impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
6.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
<= 1.8.23CPE matchmatch criteria
cpe:2.3:a:rubygems:rubygems:*:*:*:*:*:*:*:*
1.8.0CPE matchmatch criteria
cpe:2.3:a:rubygems:rubygems:1.8.0:*:*:*:*:*:*:*
1.8.1CPE matchmatch criteria
cpe:2.3:a:rubygems:rubygems:1.8.1:*:*:*:*:*:*:*
1.8.2CPE matchmatch criteria
cpe:2.3:a:rubygems:rubygems:1.8.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.3MEDIUM

AV:N/AC:M/Au:N/C:N/I:N/A:P

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.34%
Probability of exploitation in next 30 days
EPSS Percentile
87.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0334 is in the 82nd percentile among its peer group of 19,958 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (19)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise MRG 2Fixed in: cumin-0:0.1.5787-4.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise MRG 2Fixed in: rubygems-0:1.8.23.2-1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Enterprise 2.0Fixed in: rubygems-0:1.8.24-5.el6op
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for RHEL-6Fixed in: ruby193-ruby-0:1.9.3.448-40.el6
View patch
redhatpatch availablevia redhat_api
Product: OpenStack 3 for RHEL 6Fixed in: ruby193-ruby-0:1.9.3.448-40.el6
View patch
redhatpatch availablevia redhat_api
Product: OpenStack 3 for RHEL 6Fixed in: ruby193-rubygems-0:1.8.24-9.el6ost
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: rubygems-0:1.3.7-4.el6_4
View patch
rubygemspatch availablevia ghsa
Product: rubygems-updateFixed in: 1.8.23.1
rubygemspatch availablevia ghsa
Product: rubygems-updateFixed in: 1.8.26
rubygemspatch availablevia ghsa
Product: rubygems-updateFixed in: 2.0.8
rubygemspatch availablevia ghsa
Product: rubygems-updateFixed in: 2.1.0
redhatno patchvia redhat_api
Product: Red Hat OpenStack Platform 4Fixed in: ruby193-rubygems
redhatno patchvia redhat_api
Product: Red Hat Subscription Asset ManagerFixed in: ruby193-rubygems
redhatno patchvia redhat_api
Product: CloudForms Management Engine 5Fixed in: rubygems
redhatend of lifevia redhat_api
Product: Red Hat Satellite 6Fixed in: ruby193-rubygems
redhatend of lifevia redhat_api
Product: Red Hat Satellite 6Fixed in: rubygems
redhatend of lifevia redhat_api
Product: Red Hat Subscription Asset ManagerFixed in: rubygems
redhatend of lifevia redhat_api
Product: OpenShift Enterprise 1Fixed in: ruby193-ruby
redhatend of lifevia redhat_api
Product: OpenShift Enterprise 1Fixed in: rubygems

Vendor Advisories (2)

rubygemsGHSA-9j7m-rjqx-48vhmedium

RubyGems Regular Expression Denial of Service vulnerability

May 14, 2022
redhatCVE-2013-4287Moderate

rubygems: version regex algorithmic complexity vulnerability

Sep 9, 2013

References

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