{"id":"UBUNTU-CVE-2023-22792","details":"A regular expression based DoS vulnerability in Action Dispatch \u003c6.0.6.1,\u003c 6.1.7.1, and \u003c7.0.4.1. Specially crafted cookies, in combination with a specially crafted X_FORWARDED_HOST header can cause the regular expression engine to enter a state of catastrophic backtracking. This can cause the process to use large amounts of CPU and memory, leading to a possible DoS vulnerability All users running an affected release should either upgrade or use one of the workarounds immediately.","modified":"2026-01-20T17:36:34.619298Z","published":"2023-02-09T20:15:00Z","upstream":["CVE-2023-22792"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-22792"},{"type":"REPORT","url":"https://discuss.rubyonrails.org/t/cve-2023-22792-possible-redos-based-dos-vulnerability-in-action-dispatch/82115"},{"type":"REPORT","url":"https://github.com/rails/rails/commit/7a7f37f146aa977350cf914eba20a95ce371485f"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2023-22792"}],"affected":[{"package":{"name":"rails","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/rails@2:4.2.6-1ubuntu0.1~esm2?arch=source&distro=esm-apps/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2:4.1.10-1","2:4.2.5-1","2:4.2.5.1-1","2:4.2.5.2-2","2:4.2.6-1","2:4.2.6-1ubuntu0.1~esm1","2:4.2.6-1ubuntu0.1~esm2"],"ecosystem_specific":{"binaries":[{"binary_version":"2:4.2.6-1ubuntu0.1~esm2","binary_name":"rails"},{"binary_version":"2:4.2.6-1ubuntu0.1~esm2","binary_name":"ruby-actionmailer"},{"binary_version":"2:4.2.6-1ubuntu0.1~esm2","binary_name":"ruby-actionpack"},{"binary_version":"2:4.2.6-1ubuntu0.1~esm2","binary_name":"ruby-actionview"},{"binary_version":"2:4.2.6-1ubuntu0.1~esm2","binary_name":"ruby-activejob"},{"binary_version":"2:4.2.6-1ubuntu0.1~esm2","binary_name":"ruby-activemodel"},{"binary_version":"2:4.2.6-1ubuntu0.1~esm2","binary_name":"ruby-activerecord"},{"binary_version":"2:4.2.6-1ubuntu0.1~esm2","binary_name":"ruby-activesupport"},{"binary_version":"2:4.2.6-1ubuntu0.1~esm2","binary_name":"ruby-rails"},{"binary_version":"2:4.2.6-1ubuntu0.1~esm2","binary_name":"ruby-railties"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-22792.json"}},{"package":{"name":"rails","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/rails@2:4.2.10-0ubuntu4+esm2?arch=source&distro=esm-apps/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2:4.2.9-2","2:4.2.9-4","2:4.2.10-0ubuntu4","2:4.2.10-0ubuntu4+esm1","2:4.2.10-0ubuntu4+esm2"],"ecosystem_specific":{"binaries":[{"binary_version":"2:4.2.10-0ubuntu4+esm2","binary_name":"rails"},{"binary_version":"2:4.2.10-0ubuntu4+esm2","binary_name":"ruby-actionmailer"},{"binary_version":"2:4.2.10-0ubuntu4+esm2","binary_name":"ruby-actionpack"},{"binary_version":"2:4.2.10-0ubuntu4+esm2","binary_name":"ruby-actionview"},{"binary_version":"2:4.2.10-0ubuntu4+esm2","binary_name":"ruby-activejob"},{"binary_version":"2:4.2.10-0ubuntu4+esm2","binary_name":"ruby-activemodel"},{"binary_version":"2:4.2.10-0ubuntu4+esm2","binary_name":"ruby-activerecord"},{"binary_version":"2:4.2.10-0ubuntu4+esm2","binary_name":"ruby-activesupport"},{"binary_version":"2:4.2.10-0ubuntu4+esm2","binary_name":"ruby-rails"},{"binary_version":"2:4.2.10-0ubuntu4+esm2","binary_name":"ruby-railties"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-22792.json"}},{"package":{"name":"rails","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/rails@2:5.2.3+dfsg-3ubuntu0.1~esm1?arch=source&distro=esm-apps/focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2:5.2.2.1+dfsg-1ubuntu1","2:5.2.3+dfsg-3","2:5.2.3+dfsg-3ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_version":"2:5.2.3+dfsg-3ubuntu0.1~esm1","binary_name":"rails"},{"binary_version":"2:5.2.3+dfsg-3ubuntu0.1~esm1","binary_name":"ruby-actioncable"},{"binary_version":"2:5.2.3+dfsg-3ubuntu0.1~esm1","binary_name":"ruby-actionmailer"},{"binary_version":"2:5.2.3+dfsg-3ubuntu0.1~esm1","binary_name":"ruby-actionpack"},{"binary_version":"2:5.2.3+dfsg-3ubuntu0.1~esm1","binary_name":"ruby-actionview"},{"binary_version":"2:5.2.3+dfsg-3ubuntu0.1~esm1","binary_name":"ruby-activejob"},{"binary_version":"2:5.2.3+dfsg-3ubuntu0.1~esm1","binary_name":"ruby-activemodel"},{"binary_version":"2:5.2.3+dfsg-3ubuntu0.1~esm1","binary_name":"ruby-activerecord"},{"binary_version":"2:5.2.3+dfsg-3ubuntu0.1~esm1","binary_name":"ruby-activestorage"},{"binary_version":"2:5.2.3+dfsg-3ubuntu0.1~esm1","binary_name":"ruby-activesupport"},{"binary_version":"2:5.2.3+dfsg-3ubuntu0.1~esm1","binary_name":"ruby-rails"},{"binary_version":"2:5.2.3+dfsg-3ubuntu0.1~esm1","binary_name":"ruby-railties"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-22792.json"}},{"package":{"name":"rails","ecosystem":"Ubuntu:Pro:22.04:LTS","purl":"pkg:deb/ubuntu/rails@2:6.1.4.1+dfsg-8ubuntu2+esm1?arch=source&distro=esm-apps/jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2:6.0.3.7+dfsg-2","2:6.1.4.1+dfsg-8ubuntu2","2:6.1.4.1+dfsg-8ubuntu2+esm1"],"ecosystem_specific":{"binaries":[{"binary_version":"2:6.1.4.1+dfsg-8ubuntu2+esm1","binary_name":"rails"},{"binary_version":"2:6.1.4.1+dfsg-8ubuntu2+esm1","binary_name":"ruby-actionca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