{"id":"UBUNTU-CVE-2024-49761","details":"REXML is an XML toolkit for Ruby. The REXML gem before 3.3.9 has a ReDoS vulnerability when it parses an XML that has many digits between &# and x...; in a hex numeric character reference (&#x...;). This does not happen with Ruby 3.2 or later. Ruby 3.1 is the only affected maintained Ruby. The REXML gem 3.3.9 or later include the patch to fix the vulnerability.","modified":"2026-04-22T15:12:27.677469Z","published":"2024-10-28T15:15:00Z","related":["USN-7091-1","USN-7091-2","USN-7442-1"],"upstream":["CVE-2024-49761"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2024-49761"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2024-49761"},{"type":"REPORT","url":"https://github.com/ruby/rexml/security/advisories/GHSA-2rxp-v6pw-ch6m"},{"type":"REPORT","url":"https://github.com/ruby/rexml/commit/ce59f2eb1aeb371fe1643414f06618dbe031979f"},{"type":"REPORT","url":"https://www.ruby-lang.org/en/news/2024/10/28/redos-rexml-cve-2024-49761/"},{"type":"REPORT","url":"https://github.com/ruby/rexml/commit/ce59f2eb1aeb371fe1643414f06618dbe031979f"},{"type":"REPORT","url":"https://www.ruby-lang.org/en/news/2024/10/28/redos-rexml-cve-2024-49761"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7091-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7091-2"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7442-1"}],"affected":[{"package":{"name":"ruby2.3","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/ruby2.3@2.3.1-2~ubuntu16.04.16+esm10?arch=source&distro=esm-infra/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.3.1-2~ubuntu16.04.16+esm10"}]}],"versions":["2.3.0-1","2.3.0-2","2.3.0-4ubuntu2","2.3.0-4ubuntu3","2.3.0-5ubuntu1","2.3.1-2~16.04","2.3.1-2~16.04.2","2.3.1-2~16.04.4","2.3.1-2~16.04.5","2.3.1-2~16.04.6","2.3.1-2~16.04.7","2.3.1-2~16.04.9","2.3.1-2~16.04.10","2.3.1-2~16.04.11","2.3.1-2~16.04.12","2.3.1-2~ubuntu16.04.13","2.3.1-2~ubuntu16.04.14","2.3.1-2~ubuntu16.04.15","2.3.1-2~ubuntu16.04.16","2.3.1-2~ubuntu16.04.16+esm1","2.3.1-2~ubuntu16.04.16+esm2","2.3.1-2~ubuntu16.04.16+esm3","2.3.1-2~ubuntu16.04.16+esm4","2.3.1-2~ubuntu16.04.16+esm5","2.3.1-2~ubuntu16.04.16+esm6","2.3.1-2~ubuntu16.04.16+esm7","2.3.1-2~ubuntu16.04.16+esm8","2.3.1-2~ubuntu16.04.16+esm9"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"libruby2.3","binary_version":"2.3.1-2~ubuntu16.04.16+esm10"},{"binary_name":"ruby2.3","binary_version":"2.3.1-2~ubuntu16.04.16+esm10"},{"binary_name":"ruby2.3-tcltk","binary_version":"2.3.1-2~ubuntu16.04.16+esm10"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2024/UBUNTU-CVE-2024-49761.json"}},{"package":{"name":"ruby2.5","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/ruby2.5@2.5.1-1ubuntu1.16+esm4?arch=source&distro=esm-infra/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.5.1-1ubuntu1.16+esm4"}]}],"versions":["2.5.0~preview1-1ubuntu2","2.5.0-4ubuntu1","2.5.0-4ubuntu4","2.5.0-5ubuntu1","2.5.0-6ubuntu1","2.5.1-1ubuntu1","2.5.1-1ubuntu1.1","2.5.1-1ubuntu1.2","2.5.1-1ubuntu1.4","2.5.1-1ubuntu1.5","2.5.1-1ubuntu1.6","2.5.1-1ubuntu1.7","2.5.1-1ubuntu1.8","2.5.1-1ubuntu1.9","2.5.1-1ubuntu1.10","2.5.1-1ubuntu1.11","2.5.1-1ubuntu1.12","2.5.1-1ubuntu1.13","2.5.1-1ubuntu1.14","2.5.1-1ubuntu1.15","2.5.1-1ubuntu1.16","2.5.1-1ubuntu1.16+esm1","2.5.1-1ubuntu1.16+esm3"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_version":"2.5.1-1ubuntu1.16+esm4","binary_name":"libruby2.5"},{"binary_name":"ruby2.5","binary_version":"2.5.1-1ubuntu1.16+esm4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2024/UBUNTU-CVE-2024-49761.json"}},{"package":{"name":"ruby2.7","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/ruby2.7@2.7.0-5ubuntu1.15?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.0-5ubuntu1.15"}]}],"versions":["2.7.0-1","2.7.0-2","2.7.0-3","2.7.0-4","2.7.0-4ubuntu1","2.7.0-5ubuntu1","2.7.0-5ubuntu1.1","2.7.0-5ubuntu1.2","2.7.0-5ubuntu1.3","2.7.0-5ubuntu1.4","2.7.0-5ubuntu1.5","2.7.0-5ubuntu1.6","2.7.0-5ubuntu1.7","2.7.0-5ubuntu1.8","2.7.0-5ubuntu1.9","2.7.0-5ubuntu1.10","2.7.0-5ubuntu1.11","2.7.0-5ubuntu1.12","2.7.0-5ubuntu1.13","2.7.0-5ubuntu1.14"],"ecosystem_specific":{"binaries":[{"binary_name":"libruby2.7","binary_version":"2.7.0-5ubuntu1.15"},{"binary_name":"ruby2.7","binary_version":"2.7.0-5ubuntu1.15"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2024/UBUNTU-CVE-2024-49761.json"}},{"package":{"name":"ruby3.0","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/ruby3.0@3.0.2-7ubuntu2.8?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.2-7ubuntu2.8"}]}],"versions":["3.0.2-5ubuntu1","3.0.2-7","3.0.2-7ubuntu2","3.0.2-7ubuntu2.1","3.0.2-7ubuntu2.2","3.0.2-7ubuntu2.3","3.0.2-7ubuntu2.4","3.0.2-7ubuntu2.5","3.0.2-7ubuntu2.6","3.0.2-7ubuntu2.7"],"ecosystem_specific":{"binaries":[{"binary_name":"libruby3.0","binary_version":"3.0.2-7ubuntu2.8"},{"binary_name":"ruby3.0","binary_version":"3.0.2-7ubuntu2.8"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2024/UBUNTU-CVE-2024-49761.json"}},{"package":{"name":"ruby3.2","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/ruby3.2@3.2.3-1ubuntu0.24.04.3?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.2.3-1ubuntu0.24.04.3"}]}],"versions":["3.2.3-1","3.2.3-1build2","3.2.3-1build3","3.2.3-1ubuntu0.24.04.1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libruby3.2","binary_version":"3.2.3-1ubuntu0.24.04.3"},{"binary_name":"ruby3.2","binary_version":"3.2.3-1ubuntu0.24.04.3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2024/UBUNTU-CVE-2024-49761.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U"},{"type":"Ubuntu","score":"medium"}]}