{"id":"UBUNTU-CVE-2013-0156","details":"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conversion or (2) Symbol type conversion.","modified":"2025-07-16T08:10:39.591244Z","published":"2013-01-13T22:55:00Z","withdrawn":"2025-07-18T16:42:49Z","upstream":["CVE-2013-0156"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2013-0156"},{"type":"REPORT","url":"http://www.insinuator.net/2013/01/rails-yaml/"},{"type":"REPORT","url":"http://www.openwall.com/lists/oss-security/2013/01/08/14"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2013-0156"}],"affected":[{"package":{"name":"ruby-extlib","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/ruby-extlib@0.9.15-3?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.9.15-3"}]}],"ecosystem_specific":{"binaries":[{"binary_name":"libextlib-ruby","binary_version":"0.9.15-3"},{"binary_name":"libextlib-ruby-doc","binary_version":"0.9.15-3"},{"binary_name":"libextlib-ruby1.8","binary_version":"0.9.15-3"},{"binary_name":"libextlib-ruby1.9.1","binary_version":"0.9.15-3"},{"binary_version":"0.9.15-3","binary_name":"ruby-extlib"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2013/UBUNTU-CVE-2013-0156.json"}}],"schema_version":"1.7.3","severity":[{"type":"Ubuntu","score":"high"}]}