CVE-2021-24307 Information

Description

The All in One SEO – Best WordPress SEO Plugin – Easily Improve Your SEO Rankings before 4.1.0.2 enables authenticated users with ioseo_tools_settings\ privilege (most of the time admin) to execute arbitrary code on the underlying host. Users can restore plugin’s configuration by uploading a backup .ini file in the section \Tool > Import/Export. However the plugin attempts to unserialize values of the .ini file. Moreover the plugin embeds Monolog library which can be used to craft a gadget chain and thus trigger system command execution.

CVSS Vector

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

Reference

https://wpscan.com/vulnerability/ab2c94d2-f6c4-418b-bd14-711ed164bcf1 https://aioseo.com/changelog/

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.8