Sandbox Escape by math function in smarty
CVE-2021-29454

8.1HIGH

Key Information:

Vendor

Smarty-PHP

Status
Smarty
Vendor
CVE Published:
10 January 2022

What is CVE-2021-29454?

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.

Affected Version(s)

smarty < 3.1.42 < 3.1.42

smarty >= 4.0.0, < 4.0.2 < 4.0.0, 4.0.2

References

https://github.com/smarty-php/smarty/security/advisories/...
https://github.com/smarty-php/smarty/commit/215d81a9fa3cd...
https://github.com/smarty-php/smarty/releases/tag/v3.1.42

CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.