CVE-2013-0156

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.

• CWE-20

• http://ics-cert.us-cert.gov/advisories/ICSA-13-036-01AThird Party Advisory, US Government Resource
• http://lists.apple.com/archives/security-announce/2013/Mar/msg00002.htmlMailing List, Third Party Advisory
• http://rhn.redhat.com/errata/RHSA-2013-0153.htmlThird Party Advisory
• http://rhn.redhat.com/errata/RHSA-2013-0154.htmlThird Party Advisory
• http://rhn.redhat.com/errata/RHSA-2013-0155.htmlThird Party Advisory
• http://weblog.rubyonrails.org/2013/1/28/Rails-3-0-20-and-2-3-16-have-been-released/Vendor Advisory
• http://www.debian.org/security/2013/dsa-2604Third Party Advisory
• http://www.fujitsu.com/global/support/software/security/products-f/sw-sv-rcve-ror201301e.htmlThird Party Advisory
• http://www.insinuator.net/2013/01/rails-yaml/Third Party Advisory
• http://www.kb.cert.org/vuls/id/380039Third Party Advisory, US Government Resource
• http://www.kb.cert.org/vuls/id/628463Third Party Advisory, US Government Resource
• https://community.rapid7.com/community/metasploit/blog/2013/01/09/serialization-mischief-in-ruby-land-cve-2013-0156Third Party Advisory
• https://groups.google.com/group/rubyonrails-security/msg/c1432d0f8c70e89d?dmode=source&output=gplainThird Party Advisory
• https://puppet.com/security/cve/cve-2013-0156Third Party Advisory
• http://ics-cert.us-cert.gov/advisories/ICSA-13-036-01AThird Party Advisory, US Government Resource
• http://lists.apple.com/archives/security-announce/2013/Mar/msg00002.htmlMailing List, Third Party Advisory
• http://rhn.redhat.com/errata/RHSA-2013-0153.htmlThird Party Advisory
• http://rhn.redhat.com/errata/RHSA-2013-0154.htmlThird Party Advisory
• http://rhn.redhat.com/errata/RHSA-2013-0155.htmlThird Party Advisory
• http://weblog.rubyonrails.org/2013/1/28/Rails-3-0-20-and-2-3-16-have-been-released/Vendor Advisory
• http://www.debian.org/security/2013/dsa-2604Third Party Advisory
• http://www.fujitsu.com/global/support/software/security/products-f/sw-sv-rcve-ror201301e.htmlThird Party Advisory
• http://www.insinuator.net/2013/01/rails-yaml/Third Party Advisory
• http://www.kb.cert.org/vuls/id/380039Third Party Advisory, US Government Resource
• http://www.kb.cert.org/vuls/id/628463Third Party Advisory, US Government Resource
• https://community.rapid7.com/community/metasploit/blog/2013/01/09/serialization-mischief-in-ruby-land-cve-2013-0156Third Party Advisory
• https://groups.google.com/group/rubyonrails-security/msg/c1432d0f8c70e89d?dmode=source&output=gplainThird Party Advisory
• https://puppet.com/security/cve/cve-2013-0156Third Party Advisory

Published

Jan 13, 2013

Last Modified

Jun 16, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2013-0150Directory traversal vulnerability in an unspecified signed J…
• CVE-2013-0151The do_hvm_op function in xen/arch/x86/hvm/hvm.c in Xen 4.2.…
• CVE-2013-0152Memory leak in Xen 4.2 and unstable allows local HVM guests …
• CVE-2013-0153The AMD IOMMU support in Xen 4.2.x, 4.1.x, 3.3, and other ve…
• CVE-2013-0154The get_page_type function in xen/arch/x86/mm.c in Xen 4.2, …
• CVE-2013-0155Ruby on Rails 3.0.x before 3.0.19, 3.1.x before 3.1.10, and …
• CVE-2013-0157(a) mount and (b) umount in util-linux 2.14.1, 2.17.2, and p…
• CVE-2013-0158Unspecified vulnerability in Jenkins before 1.498, Jenkins L…
• CVE-2013-0159The fedora-business-cards package before 1-0.1.beta1.fc17 on…
• CVE-2013-0160The Linux kernel through 3.7.9 allows local users to obtain …
• CVE-2013-0161Havalite CMS 1.1.7 has a stored XSS vulnerability5.4
• CVE-2013-0162The diff_pp function in lib/gauntlet_rubyparser.rb in the ru…