CVE-2013-0156

highpriority · attend · 75EPSS 0.994 · 100 %ileexploit · weaponizedEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

13 exploits · weaponized

Likely / severe?

99.4% (100th) EPSS

CVSS 7.5 · high

Is it mine?

17 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · nvd · osv

EPSS · scored 2026-10-23

active_support/core_ext/hash/conversions.rb in Ruby on Rails before 2.3.15, 3.0.x before 3.0.19, 3.1.x before 3.1.10, and 3.2.x before 3.2.11 does not properly restrict casts of string values, which allows remote attackers to conduct object-injection attacks and execute arbitrary code, or cause a denial of service (memory and CPU consumption) involving nested XML entity references, by leveraging Action Pack support for (1) YAML type conversion or (2) Symbol type conversion.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

Fixedruby193-rubygem-actionpack-1:3.2.8-2.el6.noarch as a component of Red Hat OpenShift Enterprise Infrastructureredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0153
Fixedruby193-rubygem-actionpack-1:3.2.8-2.el6.noarch as a component of Red Hat OpenShift Enterprise Noderedhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0153
Fixedruby193-rubygem-actionpack-1:3.2.8-2.el6.src as a component of Red Hat OpenShift Enterprise Infrastructureredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0153
Fixedruby193-rubygem-actionpack-1:3.2.8-2.el6.src as a component of Red Hat OpenShift Enterprise Noderedhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0153
Fixedruby193-rubygem-actionpack-doc-1:3.2.8-2.el6.noarch as a component of Red Hat OpenShift Enterprise Infrastructureredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0153
Fixedruby193-rubygem-actionpack-doc-1:3.2.8-2.el6.noarch as a component of Red Hat OpenShift Enterprise Noderedhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0153
Fixedruby193-rubygem-activesupport-1:3.2.8-3.el6.noarch as a component of Red Hat OpenShift Enterprise Infrastructureredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0153
Fixedruby193-rubygem-activesupport-1:3.2.8-3.el6.noarch as a component of Red Hat OpenShift Enterprise Noderedhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0153
Fixedruby193-rubygem-activesupport-1:3.2.8-3.el6.src as a component of Red Hat OpenShift Enterprise Infrastructureredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0153
Fixedruby193-rubygem-activesupport-1:3.2.8-3.el6.src as a component of Red Hat OpenShift Enterprise Noderedhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0153
Fixedrubygem-actionpack-1:3.0.13-2.1.el6op.noarch as a component of Red Hat OpenShift Enterprise Infrastructureredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0153
Fixedrubygem-actionpack-1:3.0.13-2.1.el6op.src as a component of Red Hat OpenShift Enterprise Infrastructureredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0153
Fixedrubygem-activesupport-1:3.0.13-2.el6op.noarch as a component of Red Hat OpenShift Enterprise Infrastructureredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0153
Fixedrubygem-activesupport-1:3.0.13-2.el6op.noarch as a component of Red Hat OpenShift Enterprise Noderedhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0153
Fixedrubygem-activesupport-1:3.0.13-2.el6op.src as a component of Red Hat OpenShift Enterprise Infrastructureredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0153
Fixedrubygem-activesupport-1:3.0.13-2.el6op.src as a component of Red Hat OpenShift Enterprise Noderedhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0153
Fixedrubygem-actionpack-1:3.0.10-11.el6cf.noarch as a component of Red Hat Subscription Asset Manager for RHEL 6 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0154
Fixedrubygem-actionpack-1:3.0.10-11.el6cf.src as a component of Red Hat Subscription Asset Manager for RHEL 6 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0154
Fixedrubygem-activerecord-1:3.0.10-8.el6cf.noarch as a component of Red Hat Subscription Asset Manager for RHEL 6 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0154
Fixedrubygem-activerecord-1:3.0.10-8.el6cf.src as a component of Red Hat Subscription Asset Manager for RHEL 6 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0154
Fixedrubygem-activesupport-1:3.0.10-5.el6cf.noarch as a component of Red Hat Subscription Asset Manager for RHEL 6 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0154
Fixedrubygem-activesupport-1:3.0.10-5.el6cf.src as a component of Red Hat Subscription Asset Manager for RHEL 6 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0154
Fixedrubygem-actionpack-1:3.0.10-11.el6cf.noarch as a component of CloudForms Cloud Engine for RHEL 6 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0155
Fixedrubygem-actionpack-1:3.0.10-11.el6cf.noarch as a component of CloudForms System Engine for RHEL 6 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0155
Fixedrubygem-actionpack-1:3.0.10-11.el6cf.src as a component of CloudForms Cloud Engine for RHEL 6 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0155
Fixedrubygem-actionpack-1:3.0.10-11.el6cf.src as a component of CloudForms System Engine for RHEL 6 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0155
Fixedrubygem-activerecord-1:3.0.10-8.el6cf.noarch as a component of CloudForms Cloud Engine for RHEL 6 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0155
Fixedrubygem-activerecord-1:3.0.10-8.el6cf.noarch as a component of CloudForms System Engine for RHEL 6 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0155
Fixedrubygem-activerecord-1:3.0.10-8.el6cf.src as a component of CloudForms Cloud Engine for RHEL 6 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0155
Fixedrubygem-activerecord-1:3.0.10-8.el6cf.src as a component of CloudForms System Engine for RHEL 6 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0155
Fixedrubygem-activesupport-1:3.0.10-5.el6cf.noarch as a component of CloudForms Cloud Engine for RHEL 6 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0155
Fixedrubygem-activesupport-1:3.0.10-5.el6cf.noarch as a component of CloudForms System Engine for RHEL 6 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0155
Fixedrubygem-activesupport-1:3.0.10-5.el6cf.src as a component of CloudForms Cloud Engine for RHEL 6 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0155
Fixedrubygem-activesupport-1:3.0.10-5.el6cf.src as a component of CloudForms System Engine for RHEL 6 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2013:0155

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.07.5highAV:N/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 10 · impact 6.4

v2.07.5highAV:N/AC:L/Au:N/C:P/I:P/A:P/E:Hsecondary · CVSS-BT (t0sche)

v2.07.5highAV:N/AC:L/Au:N/C:P/I:P/A:Psecondary · Red Hat Product Security US

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USprimaryCWE-20USCWE-502US

exploits (13)

Public proof-of-concept and weaponised exploit code.

exploit/multi/http/rails_secret_deserializationRuby on Rails Known Secret Session Cookie Remote Code Executionweaponized · metasploit
exploit/multi/http/rails_xml_yaml_code_execRuby on Rails XML Processor YAML Deserialization Code Executionweaponized · metasploit
EDB-24019Ruby on Rails - XML Processor YAML Deserialization Code Execution (Metasploit)functional · exploit_db
EDB-27527Ruby on Rails - Known Secret Session Cookie Remote Code Execution (Metasploit)functional · exploit_db
auxiliary/scanner/http/rails_xml_yaml_scannerRuby on Rails XML Processor YAML Deserialization Scannerfunctional · metasploit
7s26simon/CVE-2013-0156Modified ruby script for RCEPoC · poc_in_github

affected products (17)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
debian debian linux= 6.0nvdUScpe:2.3:o:debian:debian_linux:*:*:*:*:*:*:*:*
debian debian linux= 7.0nvdUScpe:2.3:o:debian:debian_linux:*:*:*:*:*:*:*:*
rubyonrails rails3.2.0 → 3.2.11nvdUScpe:2.3:a:rubyonrails:rails:*:*:*:*:*:*:*:*
rubyonrails ruby on rails< 2.3.15nvdUScpe:2.3:a:rubyonrails:ruby_on_rails:*:*:*:*:*:*:*:*
rubyonrails ruby on rails3.0.0 → 3.0.19nvdUScpe:2.3:a:rubyonrails:ruby_on_rails:*:*:*:*:*:*:*:*
rubyonrails ruby on rails3.1.0 → 3.1.10nvdUScpe:2.3:a:rubyonrails:ruby_on_rails:*:*:*:*:*:*:*:*
RubyGems actionpack< 2.3.15osvUSpkg:gem/actionpack
RubyGems actionpack3.0.0 → 3.0.19osvUSpkg:gem/actionpack
RubyGems actionpack3.1.0 → 3.1.10osvUSpkg:gem/actionpack
RubyGems actionpack3.2.0 → 3.2.11osvUSpkg:gem/actionpack
rubygem-actionpack-1:3.0.10-11.el6cf.noarch as a component of Red Hat Subscription Asset Manager for RHEL 6 Serverall versionsfixedredhat_csafUS
rubygem-actionpack-1:3.0.10-11.el6cf.src as a component of Red Hat Subscription Asset Manager for RHEL 6 Serverall versionsfixedredhat_csafUS
rubygem-activerecord-1:3.0.10-8.el6cf.noarch as a component of Red Hat Subscription Asset Manager for RHEL 6 Serverall versionsfixedredhat_csafUS
rubygem-activerecord-1:3.0.10-8.el6cf.src as a component of Red Hat Subscription Asset Manager for RHEL 6 Serverall versionsfixedredhat_csafUS
rubygem-activesupport-1:3.0.10-5.el6cf.noarch as a component of Red Hat Subscription Asset Manager for RHEL 6 Serverall versionsfixedredhat_csafUS
rubygem-activesupport-1:3.0.10-5.el6cf.src as a component of Red Hat Subscription Asset Manager for RHEL 6 Serverall versionsfixedredhat_csafUS

advisories (4)

Vendor and ecosystem advisories describing this.

RHSA-2013:0153Red Hat Security Advisory: Ruby on Rails security update2013-01-10csaf · redhat_csafUS
Updated rubygem-actionpack, rubygem-activesupport, ruby193-rubygem-actionpack, and ruby193-rubygem-activesupport packages that fix multiple security issues are now available for Red Hat OpenShift Enterprise 1.0. The Red Hat Security Response Team has rated this update as having critical security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.
RHSA-2013:0154Red Hat Security Advisory: Ruby on Rails security update2013-01-10csaf · redhat_csafUS
Updated rubygem-actionpack, rubygem-activesupport, and rubygem-activerecord packages that fix multiple security issues are now available for Red Hat Subscription Asset Manager. The Red Hat Security Response Team has rated this update as having critical security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.
RHSA-2013:0155Red Hat Security Advisory: Ruby on Rails security update2013-01-10csaf · redhat_csafUS
Updated rubygem-actionpack, rubygem-activesupport, and rubygem-activerecord packages that fix multiple security issues are now available for Red Hat CloudForms. The Red Hat Security Response Team has rated this update as having critical security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.
GHSA-jmgw-6vjg-jjwgactionpack Improper Input Validation vulnerability2017-10-24ghsa · osvUS
`active_support/core_ext/hash/conversions.rb` in Ruby on Rails before 2.3.15, 3.0.x before 3.0.19, 3.1.x before 3.1.10, and 3.2.x before 3.2.11 does not properly restrict casts of string values, which allows remote attackers to conduct object-injection attacks and execute arbitrary code, or cause a denial of service (memory and CPU consumption) involving nested XML entity references, by leveraging Action Pack support for (1) YAML type conversion or (2) Symbol type conversion.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd osv redhat_csaf NVD CVE.org MITRE

published 2013-01-13modified 2026-06-16

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+25119 more

references (49)

External citations — patches, advisories, analysis.

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