CVE-2021-29454
Published: 10 January 2022
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.
Priority
Status
Package | Release | Status |
---|---|---|
smarty3 Launchpad, Ubuntu, Debian |
jammy |
Released
(3.1.39-2ubuntu1)
|
bionic |
Released
(3.1.31+20161214.1.c7d42e4+selfpack1-3ubuntu0.1)
|
|
hirsute |
Ignored
(end of life)
|
|
upstream |
Released
(3.1.42,4.0.2)
|
|
trusty |
Does not exist
|
|
xenial |
Released
(3.1.21-1ubuntu1+esm1)
Available with Ubuntu Pro |
|
impish |
Released
(3.1.39-2ubuntu0.21.10.1)
|
|
kinetic |
Released
(3.1.39-2ubuntu1)
|
|
focal |
Released
(3.1.34+20190228.1.c9f0de05+selfpack1-1ubuntu0.1~esm1)
Available with Ubuntu Pro |
|
lunar |
Released
(3.1.39-2ubuntu1)
|
|
mantic |
Released
(3.1.39-2ubuntu1)
|
|
Patches: upstream: https://github.com/smarty-php/smarty/commit/7ad97ad030b4289711e30819c928b8bc33c62b23 |
Severity score breakdown
Parameter | Value |
---|---|
Base score | 8.8 |
Attack vector | Network |
Attack complexity | Low |
Privileges required | Low |
User interaction | None |
Scope | Unchanged |
Confidentiality | High |
Integrity impact | High |
Availability impact | High |
Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29454
- https://github.com/smarty-php/smarty/commit/215d81a9fa3cd63d82fb3ab56ecaf97cf1e7db71
- https://github.com/smarty-php/smarty/security/advisories/GHSA-29gp-2c3m-3j6m
- https://packagist.org/packages/smarty/smarty
- https://github.com/smarty-php/smarty/releases/tag/v3.1.42
- https://www.smarty.net/docs/en/language.function.math.tpl
- https://github.com/smarty-php/smarty/releases/tag/v4.0.2
- https://ubuntu.com/security/notices/USN-5348-1
- https://ubuntu.com/security/notices/USN-5348-3
- https://ubuntu.com/security/notices/USN-5348-2
- NVD
- Launchpad
- Debian