CVE-2021-23803 Information

Description

This affects the package latte/latte before 2.10.6. There is a way to bypass allowFunctions that will affect the security of the application. When the template is set to allow/disallow the use of certain functions adding control characters (x00-x08) after the function will bypass these restrictions.

CVSS Vector

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

Reference

https://github.com/nette/latte/issues/279 https://github.com/nette/latte/commit/227c86eda9a8a6d060ea8501923e768b6d992210 https://snyk.io/vuln/SNYK-PHP-LATTELATTE-1932226

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8