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CVE-2013-4164

44
FAUCET Score

CVE-2013-4164 is a heap-based buffer overflow vulnerability affecting Ruby versions 1.8, 1.9 (before 1.9.3-p484), 2.0 (before 2.0.0-p353), 2.1 (before 2.1.0 preview2), and trunk (before revision 43780). This flaw allows remote attackers to trigger a denial of service (segmentation fault) and potentially execute arbitrary code by providing a specially crafted string that is converted to a floating-point value, for example, via the to_f method or JSON.parse. With a CVSS score of 6.8, this vulnerability is of medium severity, requiring medium attack complexity and potentially leading to partial confidentiality, integrity, and availability impacts. While not listed in CISA's KEV catalog, a Metasploit module exists for denial-of-service, and it has received some community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
1.8CPE matchmatch criteria
cpe:2.3:a:ruby-lang:ruby:1.8:*:*:*:*:*:*:*
1.9CPE matchmatch criteria
cpe:2.3:a:ruby-lang:ruby:1.9:*:*:*:*:*:*:*
1.9.1CPE matchmatch criteria
cpe:2.3:a:ruby-lang:ruby:1.9.1:*:*:*:*:*:*:*
1.9.2CPE matchmatch criteria
cpe:2.3:a:ruby-lang:ruby:1.9.2:*:*:*:*:*:*:*
1.9.3CPE matchmatch criteria
cpe:2.3:a:ruby-lang:ruby:1.9.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.8MEDIUM

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
34.97%
Probability of exploitation in next 30 days
EPSS Percentile
98.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
Metasploit: Ruby on Rails JSON Processor Floating Point Heap Overflow DoS · Nov 22, 2013
This CVE's current EPSS score of 0.3497 is in the 99th percentile among its peer group of 19,955 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

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 (21)

redhatpatch availablevia redhat_api
Product: CloudForms Management Engine 5.xFixed in: cfme-0:5.2.2.3-1.el6cf
View patch
redhatpatch availablevia redhat_api
Product: CloudForms Management Engine 5.xFixed in: ruby193-ruby-0:1.9.3.448-40.1.el6
View patch
redhatpatch availablevia redhat_api
Product: CloudForms Management Engine 5.xFixed in: ruby193-rubygem-actionpack-1:3.2.13-5.el6cf
View patch
redhatpatch availablevia redhat_api
Product: CloudForms Management Engine 5.xFixed in: ruby193-rubygem-amq-protocol-0:1.9.2-3.el6cf
View patch
redhatpatch availablevia redhat_api
Product: CloudForms Management Engine 5.xFixed in: ruby193-rubygem-bunny-0:1.0.7-1.el6cf
View patch
redhatpatch availablevia redhat_api
Product: CloudForms Management Engine 5.xFixed in: ruby193-rubygem-excon-0:0.31.0-1.el6cf
View patch
redhatpatch availablevia redhat_api
Product: CloudForms Management Engine 5.xFixed in: ruby193-rubygem-fog-0:1.19.0-1.el6cf
View patch
redhatpatch availablevia redhat_api
Product: CloudForms Management Engine 5.xFixed in: ruby193-rubygem-linux_admin-0:0.7.0-1.el6cf
View patch
redhatpatch availablevia redhat_api
Product: CloudForms Management Engine 5.xFixed in: ruby193-rubygem-more_core_extensions-0:1.1.2-1.el6cf
View patch
redhatpatch availablevia redhat_api
Product: CloudForms Management Engine 5.xFixed in: ruby193-rubygem-nokogiri-0:1.5.6-3.el6cf
View patch
redhatpatch availablevia redhat_api
Product: OpenStack 3 for RHEL 6Fixed in: ruby193-ruby-0:1.9.3.448-40.1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: ruby-0:1.8.7.352-13.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6.2 EUS - Server and Compute Node OnlyFixed in: ruby-0:1.8.7.352-13.el6_2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6.3 EUS - Server and Compute Node OnlyFixed in: ruby-0:1.8.7.352-13.el6_3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6.4 Extended Update SupportFixed in: ruby-0:1.8.7.352-13.el6_4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for RHEL-6Fixed in: ruby193-ruby-0:1.9.3.448-40.1.el6
View patch
redhatno patchvia redhat_api
Product: CloudForms Management Engine 5Fixed in: mingw-ruby
redhatno patchvia redhat_api
Product: Red Hat OpenStack Platform 4Fixed in: ruby193-ruby
redhatno patchvia redhat_api
Product: Red Hat Satellite 6Fixed in: ruby193-ruby
redhatno patchvia redhat_api
Product: Red Hat Subscription Asset ManagerFixed in: ruby193-ruby
redhatend of lifevia redhat_api
Product: OpenShift Enterprise 1Fixed in: ruby193-ruby

Vendor Advisories (1)

redhatCVE-2013-4164Critical

ruby: heap overflow in floating point parsing

Nov 22, 2013

References

archives.neohapsis.com / archives/bugtraq/2014-04/0134.html
archives.neohapsis.com / archives/bugtraq/2014-10/0103.html
lists.opensuse.org / opensuse-security-announce/2013-12/msg00009.html
lists.opensuse.org / opensuse-updates/2013-12/msg00027.html
lists.opensuse.org / opensuse-updates/2013-12/msg00028.html
osvdb.org / 100113
rhn.redhat.com / errata/RHSA-2013-1763.html
rhn.redhat.com / errata/RHSA-2013-1764.html
rhn.redhat.com / errata/RHSA-2013-1767.html
rhn.redhat.com / errata/RHSA-2014-0011.html
rhn.redhat.com / errata/RHSA-2014-0215.html
secunia.com / advisories/55787
Vendor Advisory
secunia.com / advisories/57376
puppet.com / security/cve/cve-2013-4164
support.apple.com / kb/HT6536
ruby-lang.org / en/news/2013/11/22/heap-overflow-in-floating-point-parsing-cve-2013-4164
Exploit
ruby-lang.org / en/news/2013/11/22/ruby-1-9-3-p484-is-released
ruby-lang.org / en/news/2013/11/22/ruby-2-0-0-p353-is-released
Patch
debian.org / security/2013/dsa-2809
debian.org / security/2013/dsa-2810
securityfocus.com / bid/63873
ubuntu.com / usn/USN-2035-1