CVE-2021-29454
High
Description
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.
SeverityHigh
CVSS8.1
Exploit probability—
Product
Smarty
PublishedJan 10, 2022
First seenJan 10, 2022
Weakness typeCWE-74Injection
How to fix
Update
- smarty smarty3.1.42, 4.0.2 or later
- smarty/smarty3.1.42, 4.0.2 or later
Vendor advisories
- debian.org/security/2022/dsa-5151
- security.gentoo.org/glsa/202209-09
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L777JIBIWJV34HS7LXPIDWASG7TT4LNI/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BRAJVDRGCIY5UZ2PQHKDTT7RMKG6WJQQ/
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| smarty smarty | v < 3.1.42, 4.0.0 ≤ v < 4.0.2 | 3.1.42, 4.0.2 |
| debian debian_linux | 9.0, 10.0, 11.0 | — |
| fedoraproject fedora | 36, 37 | — |
| smarty/smartyPackagist | v < 3.1.42, 4.0.0 ≤ v < 4.0.2 | 3.1.42, 4.0.2 |
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