CVE-2021-21408 Access to restricted PHP code by dynamic static class access in smarty

2022-01-1000:00:00

CWE-20

GitHub_M

www.cve.org

cve-2021-21408

access restriction

php code

dynamic static class access

smarty

template engine

upgrade patch

CVSS3

8.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

AI Score

9.3

Confidence

High

EPSS

0.002

Percentile

58.5%

JSON

Smarty is a template engine for PHP, facilitating the separation of presentation (HTML/CSS) from application logic. Prior to versions 3.1.43 and 4.0.3, template authors could run restricted static php methods. Users should upgrade to version 3.1.43 or 4.0.3 to receive a patch.

CNA Affected

[
  {
    "vendor": "smarty-php",
    "product": "smarty",
    "versions": [
      {
        "version": "< 3.1.43",
        "status": "affected"
      },
      {
        "version": ">= 4.0.0, < 4.0.3",
        "status": "affected"
      }
    ]
  }
]