CVE-2021-29454

Description

### Impact Template authors could run arbitrary PHP code by crafting a malicious math string. If a math string is passed through as user provided data to the math function, external users could run arbitrary PHP code by crafting a malicious math string. ### Patches Please upgrade to 4.0.2 or 3.1.42 or higher. ### References See [documentation on Math function](https://www.smarty.net/docs/en/language.function.math.tpl). ### For more information If you have any questions or comments about this advisory please open an issue in [the Smarty repo](https://github.com/smarty-php/smarty)

Affected packages (3)

• Debian/smarty3from 0, < 3.1.39-2+deb11u1
• Debian/smarty4from 0, < 4.1.1-1
• Packagist/smarty/smartyfrom 0, < 3.1.42

CVSS scores

References (15)

• ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2021-29454
• ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2021-29454
• PATCHhttps://github.com/smarty-php/smarty
• WEBhttps://github.com/FriendsOfPHP/security-advisories/blob/master/smarty/smarty/CVE-2021-29454.yaml
• WEBhttps://github.com/smarty-php/smarty/commit/215d81a9fa3cd63d82fb3ab56ecaf97cf1e7db71
• WEBhttps://github.com/smarty-php/smarty/releases/tag/v3.1.42
• WEBhttps://github.com/smarty-php/smarty/releases/tag/v4.0.2
• WEBhttps://github.com/smarty-php/smarty/security/advisories/GHSA-29gp-2c3m-3j6m
• WEBhttps://lists.debian.org/debian-lts-announce/2022/05/msg00005.html
• WEBhttps://lists.fedoraproject.org/archives/list/[email protected]/message/BRAJVDRGCIY5UZ2PQHKDTT7RMKG6WJQQ
• WEBhttps://lists.fedoraproject.org/archives/list/[email protected]/message/L777JIBIWJV34HS7LXPIDWASG7TT4LNI
• WEBhttps://packagist.org/packages/smarty/smarty
• WEBhttps://security.gentoo.org/glsa/202209-09
• WEBhttps://www.debian.org/security/2022/dsa-5151
• WEBhttps://www.smarty.net/docs/en/language.function.math.tpl