CVE-2013-0156

Ruby on Rails XML Processor YAML Deserialization Scanner

Severity Score

7.3

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

active_support/core_ext/hash/conversions.rb en Ruby on Rails anterior a v2.3.15, v3.0.x anterior a v3.0.19, v3.1.x anterior a v3.1.10, y v3.2.x anterior a v3.2.11 no restringe adecuadamente el "casting" de las variables de tipo cadena, lo que permite a atacantes remotos llevar a cabo ataques de inyección de objetos y la ejecución de código arbitrario o provocar una denegación de servicio (consumo de memoria y CPU) involucrando a referencias de entidades XML anidadas, aprovechando el soporte de Action Pack para lso tipos de conversion (1) YAML o (2) Symbol.

Ruby on Rails is a model-view-controller framework for web application development. Action Pack implements the controller and the view components. Active Record implements object-relational mapping for accessing database entries using objects. Active Support provides support and utility classes used by the Ruby on Rails framework. Multiple flaws were found in the way Ruby on Rails performed XML parameter parsing in HTTP requests. A remote attacker could use these flaws to execute arbitrary code with the privileges of a Ruby on Rails application, perform SQL injection attacks, or bypass the authentication using a specially-created HTTP request.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2012-12-06 CVE Reserved
2013-01-08 CVE Published
2013-01-10 First Exploit
2024-08-06 CVE Updated
2025-07-15 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-20: Improper Input Validation
CWE-502: Deserialization of Untrusted Data

CAPEC

References (29)

URL	Tag	Source
http://ics-cert.us-cert.gov/advisories/ICSA-13-036-01A	Third Party Advisory
http://www.fujitsu.com/global/support/software/security/products-f/sw-sv-rcve-ror201301e.html	Third Party Advisory
http://www.insinuator.net/2013/01/rails-yaml	Third Party Advisory
http://www.kb.cert.org/vuls/id/380039	Third Party Advisory
http://www.kb.cert.org/vuls/id/628463	Third Party Advisory
https://community.rapid7.com/community/metasploit/blog/2013/01/09/serialization-mischief-in-ruby-land-cve-2013-0156	Third Party Advisory
https://groups.google.com/group/rubyonrails-security/msg/c1432d0f8c70e89d?dmode=source&output=gplain	Mailing List
https://puppet.com/security/cve/cve-2013-0156	Third Party Advisory
https://www.rapid7.com/blog/post/2013/01/09/serialization-mischief-in-ruby-land-cve-2013-0156

URL	Date	SRC
https://packetstorm.news/files/id/181043	2024-09-01
https://packetstorm.news/files/id/119471	2013-01-11
https://www.exploit-db.com/exploits/27527	2013-08-12
https://www.exploit-db.com/exploits/24019	2013-01-10
https://github.com/heroku/heroku-CVE-2013-0156	2013-01-29
https://github.com/R3dKn33-zz/CVE-2013-0156	2019-05-27
https://github.com/terracatta/name_reverser	2016-09-04
https://github.com/josal/crack-0.1.8-fixed	2016-09-04
https://github.com/bsodmike/rails-exploit-cve-2013-0156	2019-03-16
https://github.com/Jjdt12/kuang_grade_mk11	2023-07-29
https://github.com/oxBEN10/CVE-2013-0156	2024-11-13
https://github.com/oxben10/CVE-2013-0156	2024-11-13

URL	Date	SRC

URL	Date	SRC
http://lists.apple.com/archives/security-announce/2013/Mar/msg00002.html	2023-02-13
http://rhn.redhat.com/errata/RHSA-2013-0153.html	2023-02-13
http://rhn.redhat.com/errata/RHSA-2013-0154.html	2023-02-13
http://rhn.redhat.com/errata/RHSA-2013-0155.html	2023-02-13
http://weblog.rubyonrails.org/2013/1/28/Rails-3-0-20-and-2-3-16-have-been-released	2023-02-13
http://www.debian.org/security/2013/dsa-2604	2023-02-13
https://access.redhat.com/security/cve/CVE-2013-0156	2013-01-10
https://bugzilla.redhat.com/show_bug.cgi?id=892870	2013-01-10

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Rubyonrails Search vendor "Rubyonrails"		Rails Search vendor "Rubyonrails" for product "Rails"				>= 3.2.0 < 3.2.11 Search vendor "Rubyonrails" for product "Rails" and version " >= 3.2.0 < 3.2.11"		-		Affected
Rubyonrails Search vendor "Rubyonrails"		Ruby On Rails Search vendor "Rubyonrails" for product "Ruby On Rails"				< 2.3.15 Search vendor "Rubyonrails" for product "Ruby On Rails" and version " < 2.3.15"		-		Affected
Rubyonrails Search vendor "Rubyonrails"		Ruby On Rails Search vendor "Rubyonrails" for product "Ruby On Rails"				>= 3.0.0 < 3.0.19 Search vendor "Rubyonrails" for product "Ruby On Rails" and version " >= 3.0.0 < 3.0.19"		-		Affected
Rubyonrails Search vendor "Rubyonrails"		Ruby On Rails Search vendor "Rubyonrails" for product "Ruby On Rails"				>= 3.1.0 < 3.1.10 Search vendor "Rubyonrails" for product "Ruby On Rails" and version " >= 3.1.0 < 3.1.10"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				6.0 Search vendor "Debian" for product "Debian Linux" and version "6.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				7.0 Search vendor "Debian" for product "Debian Linux" and version "7.0"		-		Affected