{"id":"UBUNTU-CVE-2021-29454","details":"Smarty is a template engine for PHP, facilitating the separation of presentation (HTML/CSS) from application logic. Prior to versions 3.1.42 and 4.0.2, template authors could run arbitrary PHP code by crafting a malicious math string. If a math string was passed through as user provided data to the math function, external users could run arbitrary PHP code by crafting a malicious math string. Users should upgrade to version 3.1.42 or 4.0.2 to receive a patch.","modified":"2026-02-04T04:16:23.477129Z","published":"2022-01-10T20:15:00Z","related":["USN-5348-1","USN-5348-2","USN-5348-3"],"upstream":["CVE-2021-29454"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-29454"},{"type":"REPORT","url":"https://github.com/smarty-php/smarty/commit/215d81a9fa3cd63d82fb3ab56ecaf97cf1e7db71"},{"type":"REPORT","url":"https://github.com/smarty-php/smarty/security/advisories/GHSA-29gp-2c3m-3j6m"},{"type":"REPORT","url":"https://packagist.org/packages/smarty/smarty"},{"type":"REPORT","url":"https://github.com/smarty-php/smarty/releases/tag/v3.1.42"},{"type":"REPORT","url":"https://www.smarty.net/docs/en/language.function.math.tpl"},{"type":"REPORT","url":"https://github.com/smarty-php/smarty/releases/tag/v4.0.2"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5348-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5348-3"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5348-2"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-29454"}],"affected":[{"package":{"name":"smarty3","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/smarty3@3.1.21-1ubuntu1+esm1?arch=source&distro=esm-apps/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.1.21-1ubuntu1+esm1"}]}],"versions":["3.1.21-1","3.1.21-1ubuntu1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_name":"smarty3","binary_version":"3.1.21-1ubuntu1+esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-29454.json"}},{"package":{"name":"smarty3","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/smarty3@3.1.31+20161214.1.c7d42e4+selfpack1-3ubuntu0.1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.1.31+20161214.1.c7d42e4+selfpack1-3ubuntu0.1"}]}],"versions":["3.1.31+20161214.1.c7d42e4+selfpack1-2","3.1.31+20161214.1.c7d42e4+selfpack1-3"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"3.1.31+20161214.1.c7d42e4+selfpack1-3ubuntu0.1","binary_name":"smarty3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-29454.json"}},{"package":{"name":"smarty3","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/smarty3@3.1.34+20190228.1.c9f0de05+selfpack1-1ubuntu0.1~esm1?arch=source&distro=esm-apps/focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.1.34+20190228.1.c9f0de05+selfpack1-1ubuntu0.1~esm1"}]}],"versions":["3.1.33+20180830.1.3a78a21f+selfpack1-1","3.1.34+20190228.1.c9f0de05+selfpack1-1"],"ecosystem_specific":{"binaries":[{"binary_name":"smarty3","binary_version":"3.1.34+20190228.1.c9f0de05+selfpack1-1ubuntu0.1~esm1"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-29454.json"}},{"package":{"name":"smarty3","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/smarty3@3.1.39-2ubuntu1?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.1.39-2ubuntu1"}]}],"versions":["3.1.39-2"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"smarty3","binary_version":"3.1.39-2ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-29454.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"high"}]}