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    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.

    Published:Jan 8, 2013
    Last Modified:Apr 11, 2025
    EPS:Jan 13, 2013
    EPSS Score:0.91941
    CVSS Score:7.5

    Affected Products

    Vendor
    Cloudforms Cloudengine
    Product
    1
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Redhat
    Product
    Openshift
    Vendor
    Rhel Sam
    Product
    1.1
    Vendor
    Rubyonrails
    Product
    Rails
    Vendor
    Rubyonrails
    Product
    Ruby On Rails

    Exploits

    https://www.exploit-db.com/exploits/27527https://github.com/7s26simon/CVE-2013-0156https://github.com/bsodmike/rails-exploit-cve-2013-0156https://github.com/heroku/heroku-CVE-2013-0156https://github.com/Jjdt12/kuang_grade_mk11https://github.com/josal/crack-0.1.8-fixedhttps://github.com/oxben10/CVE-2013-0156https://github.com/R3dKn33-zz/CVE-2013-0156https://github.com/terracatta/name_reverserhttps://www.exploit-db.com/exploits/24019

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-10 Buffer Overflow via Environment Variables
    CAPEC-101 Server Side Include (SSI) Injection
    CAPEC-104 Cross Zone Scripting
    CAPEC-108 Command Line Execution through SQL Injection
    CAPEC-109 Object Relational Mapping Injection
    CAPEC-110 SQL Injection through SOAP Parameter Tampering
    CAPEC-120 Double Encoding
    CAPEC-13 Subverting Environment Variable Values
    CAPEC-135 Format String Injection
    CAPEC-136 LDAP Injection
    CAPEC-14 Client-side Injection-induced Buffer Overflow
    CAPEC-153 Input Data Manipulation
    CAPEC-182 Flash Injection
    CAPEC-209 XSS Using MIME Type Mismatch
    CAPEC-22 Exploiting Trust in Client
    CAPEC-23 File Content Injection
    CAPEC-230 Serialized Data with Nested Payloads
    CAPEC-231 Oversized Serialized Data Payloads
    CAPEC-24 Filter Failure through Buffer Overflow
    CAPEC-250 XML Injection
    CAPEC-261 Fuzzing for garnering other adjacent user/sensitive data
    CAPEC-267 Leverage Alternate Encoding
    CAPEC-28 Fuzzing
    CAPEC-3 Using Leading 'Ghost' Character Sequences to Bypass Input Filters
    CAPEC-31 Accessing/Intercepting/Modifying HTTP Cookies
    CAPEC-42 MIME Conversion
    CAPEC-43 Exploiting Multiple Input Interpretation Layers
    CAPEC-45 Buffer Overflow via Symbolic Links
    CAPEC-46 Overflow Variables and Tags
    CAPEC-47 Buffer Overflow via Parameter Expansion
    CAPEC-473 Signature Spoof
    CAPEC-52 Embedding NULL Bytes
    CAPEC-53 Postfix, Null Terminate, and Backslash
    CAPEC-586 Object Injection
    CAPEC-588 DOM-Based XSS
    CAPEC-63 Cross-Site Scripting (XSS)
    CAPEC-64 Using Slashes and URL Encoding Combined to Bypass Validation Logic
    CAPEC-664 Server Side Request Forgery
    CAPEC-67 String Format Overflow in syslog()
    CAPEC-7 Blind SQL Injection
    CAPEC-71 Using Unicode Encoding to Bypass Validation Logic
    CAPEC-72 URL Encoding
    CAPEC-73 User-Controlled Filename
    CAPEC-78 Using Escaped Slashes in Alternate Encoding
    CAPEC-79 Using Slashes in Alternate Encoding
    CAPEC-8 Buffer Overflow in an API Call
    CAPEC-80 Using UTF-8 Encoding to Bypass Validation Logic
    CAPEC-81 Web Server Logs Tampering
    CAPEC-83 XPath Injection
    CAPEC-85 AJAX Footprinting
    CAPEC-88 OS Command Injection
    CAPEC-9 Buffer Overflow in Local Command-Line Utilities

    Related CVEs

    CVE-2012-5509 (CVSS 2.1) — aeolus-configserver-setup in the Aeolas Configuration Server, as used in Red Hat CloudForms Cloud Engine befor…
    CVE-2012-6118 (CVSS 5.5) — The Administer tab in Aeolus Conductor allows remote authenticated users to bypass intended quota restrictions…
    CVE-2013-0256 (CVSS 4.3) — darkfish.js in RDoc 2.3.0 through 3.12 and 4.x before 4.0.0.preview2.1, as used in Ruby, does not properly gen…
    CVE-2013-0333 (CVSS 7.5) — lib/active_support/json/backends/yaml.rb in Ruby on Rails 2.3.x before 2.3.16 and 3.0.x before 3.0.20 does not…
    CVE-2013-0162 (CVSS 2.1) — The diff_pp function in lib/gauntlet_rubyparser.rb in the ruby_parser gem 3.1.1 and earlier for Ruby allows lo…
    CVE-2013-0155 (CVSS 6.4) — Ruby on Rails 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 consider dif…
    CVE-2013-0183 (CVSS 5) — multipart/parser.rb in Rack 1.3.x before 1.3.8 and 1.4.x before 1.4.3 allows remote attackers to cause a denia…
    CVE-2012-6496 (CVSS 7.5) — SQL injection vulnerability in the Active Record component in Ruby on Rails before 3.0.18, 3.1.x before 3.1.9,…
    CVE-2012-6117 (CVSS 2.1) — Aeolus Configuration Server, as used in Red Hat CloudForms Cloud Engine before 1.1.2, uses world-readable perm…
    CVE-2012-3465 (CVSS 4.3) — Cross-site scripting (XSS) vulnerability in actionpack/lib/action_view/helpers/sanitize_helper.rb in the strip…

    References

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

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High