{"id":"UBUNTU-CVE-2018-14774","details":"An issue was discovered in HttpKernel in Symfony 2.7.0 through 2.7.48, 2.8.0 through 2.8.43, 3.3.0 through 3.3.17, 3.4.0 through 3.4.13, 4.0.0 through 4.0.13, and 4.1.0 through 4.1.2. When using HttpCache, the values of the X-Forwarded-Host headers are implicitly set as trusted while this should be forbidden, leading to potential host header injection.","modified":"2025-10-24T04:47:10Z","published":"2018-08-03T17:29:00Z","upstream":["CVE-2018-14774"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-14774"},{"type":"REPORT","url":"https://symfony.com/blog/cve-2018-14774-possible-host-header-injection-when-using-httpcache"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2018-14774"}],"affected":[{"package":{"name":"symfony","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/symfony@2.7.10-0ubuntu2?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.7.1+dfsg-1","2.7.5+dfsg-1","2.7.9+dfsg-1","2.7.9+dfsg-1ubuntu2","2.7.10-0ubuntu2"],"ecosystem_specific":{"binaries":[{"binary_name":"php-symfony-asset","binary_version":"2.7.10-0ubuntu2"},{"binary_name":"php-symfony-browser-kit","binary_version":"2.7.10-0ubuntu2"},{"binary_version":"2.7.10-0ubuntu2","binary_name":"php-symfony-class-loader"},{"binary_name":"php-symfony-config","binary_version":"2.7.10-0ubuntu2"},{"binary_version":"2.7.10-0ubuntu2","binary_name":"php-symfony-console"},{"binary_name":"php-symfony-css-selector","binary_version":"2.7.10-0ubuntu2"},{"binary_name":"php-symfony-debug","binary_version":"2.7.10-0ubuntu2"},{"binary_name":"php-symfony-debug-bundle","binary_version":"2.7.10-0ubuntu2"},{"binary_name":"php-symfony-dependency-injection","binary_version":"2.7.10-0ubuntu2"},{"binary_name":"php-symfony-doctrine-bridge","binary_version":"2.7.10-0ubuntu2"},{"binary_name":"php-symfony-dom-crawler","binary_version":"2.7.10-0ubuntu2"},{"binary_name":"php-symfony-event-dispatcher","binary_version":"2.7.10-0ubuntu2"},{"binary_name":"php-symfony-expression-language","binary_version":"2.7.10-0ubuntu2"},{"binary_name":"php-symfony-filesystem","binary_version":"2.7.10-0ubuntu2"},{"binary_name":"php-symfony-finder","binary_version":"2.7.10-0ubuntu2"},{"binary_name":"php-symfony-form","binary_version":"2.7.10-0ubuntu2"},{"binary_name":"php-symfony-framework-bundle","binary_version":"2.7.10-0ubuntu2"},{"binary_name":"php-symfony-http-foundation","binary_version":"2.7.10-0ubuntu2"},{"binary_name":"php-symfony-http-kernel","binary_version":"2.7.10-0ubuntu2"},{"binary_name":"php-symfony-intl","binary_version":"2.7.10-0ubuntu2"},{"binary_name":"php-symfony-locale","binary_version":"2.7.10-0ubuntu2"},{"binary_name":"php-symfony-monolog-bridge","binary_version":"2.7.10-0ubuntu2"},{"binary_name":"php-symfony-options-resolver","binary_version":"2.7.10-0ubuntu2"},{"binary_name":"php-symfony-phpunit-bridge","binary_version":"2.7.10-0ubuntu2"},{"binary_version":"2.7.10-0ubuntu2","binary_name":"php-symfony-process"},{"binary_name":"php-symfony-property-access","binary_version":"2.7.10-0ubuntu2"},{"binary_name":"php-symfony-proxy-manager-bridge","binary_version":"2.7.10-0ubuntu2"},{"binary_name":"php-symfony-routing","binary_version":"2.7.10-0ubuntu2"},{"binary_name":"php-symfony-security","binary_version":"2.7.10-0ubuntu2"},{"binary_name":"php-symfony-security-bundle","binary_version":"2.7.10-0ubuntu2"},{"binary_name":"php-symfony-serializer","binary_version":"2.7.10-0ubuntu2"},{"binary_name":"php-symfony-stopwatch","binary_version":"2.7.10-0ubuntu2"},{"binary_name":"php-symfony-swiftmailer-bridge","binary_version":"2.7.10-0ubuntu2"},{"binary_name":"php-symfony-templating","binary_version":"2.7.10-0ubuntu2"},{"binary_name":"php-symfony-translation","binary_version":"2.7.10-0ubuntu2"},{"binary_name":"php-symfony-twig-bridge","binary_version":"2.7.10-0ubuntu2"},{"binary_name":"php-symfony-twig-bundle","binary_version":"2.7.10-0ubuntu2"},{"binary_name":"php-symfony-validator","binary_version":"2.7.10-0ubuntu2"},{"binary_name":"php-symfony-var-dumper","binary_version":"2.7.10-0ubuntu2"},{"binary_version":"2.7.10-0ubuntu2","binary_name":"php-symfony-web-profiler-bundle"},{"binary_name":"php-symfony-yaml","binary_version":"2.7.10-0ubuntu2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-14774.json"}},{"package":{"name":"symfony","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/symfony@3.4.6+dfsg-1ubuntu0.1+esm2?arch=source&distro=esm-apps/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.8.7+dfsg-1.3ubuntu1","3.4.3+dfsg-1ubuntu4","3.4.6+dfsg-1","3.4.6+dfsg-1ubuntu0.1","3.4.6+dfsg-1ubuntu0.1+esm1","3.4.6+dfsg-1ubuntu0.1+esm2"],"ecosystem_specific":{"binaries":[{"binary_name":"php-symfony","binary_version":"3.4.6+dfsg-1ubuntu0.1+esm2"},{"binary_name":"php-symfony-asset","binary_version":"3.4.6+dfsg-1ubuntu0.1+esm2"},{"binary_name":"php-symfony-browser-kit","binary_version":"3.4.6+dfsg-1ubuntu0.1+esm2"},{"binary_name":"php-symfony-cache","binary_version":"3.4.6+dfsg-1ubuntu0.1+esm2"},{"binary_name":"php-symfony-class-loader","binary_version":"3.4.6+dfsg-1ubuntu0.1+esm2"},{"binary_name":"php-symfony-config","binary_version":"3.4.6+dfsg-1ubuntu0.1+esm2"},{"binary_name":"php-symfony-console","binary_version":"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