CVE-2021-21706 Information

Description

In PHP versions 7.3.x below 7.3.31 7.4.x below 7.4.24 and 8.0.x below 8.0.11 in Microsoft Windows environment ZipArchive::extractTo may be tricked into writing a file outside target directory when extracting a ZIP file thus potentially causing files to be created or overwritten subject to OS permissions.

CVSS Vector

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

Reference

https://bugs.php.net/bug.php?id=81420 https://security.netapp.com/advisory/ntap-20211029-0007/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

HIGH

Base Score

NONE

Base Severity

6.5