CVE-2021-29454

HIGH

Smarty < 3.1.42 - Injection

Title source: rule
STIX 2.1

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.

References (11)

Core 11
Core References
Mailing List, Third Party Advisory mailing-list
https://lists.debian.org/debian-lts-announce/2022/05/msg00005.html
Third Party Advisory vendor-advisory
https://www.debian.org/security/2022/dsa-5151
Third Party Advisory vendor-advisory
https://security.gentoo.org/glsa/202209-09
Release Notes, Third Party Advisory
https://github.com/smarty-php/smarty/releases/tag/v3.1.42
Release Notes, Third Party Advisory
https://github.com/smarty-php/smarty/releases/tag/v4.0.2
Product, Third Party Advisory
https://packagist.org/packages/smarty/smarty

Scores

CVSS v3 8.1
EPSS 0.0064
EPSS Percentile 70.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-74
Status published
Products (7)
debian/debian_linux 9.0
debian/debian_linux 10.0
debian/debian_linux 11.0
fedoraproject/fedora 36
fedoraproject/fedora 37
smarty/smarty < 3.1.42
smarty/smarty 0 - 3.1.42Packagist
Published Jan 10, 2022
Tracked Since Feb 18, 2026