CVE-2021-24307
High
Description
The All in One SEO – Best WordPress SEO Plugin – Easily Improve Your SEO Rankings before 4.1.0.2 enables authenticated users with "aioseo_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.
SeverityHigh
CVSS8.8
Exploit probability—
Product
Aioseo All In One Seo
PublishedMay 24, 2021
First seenMay 24, 2021
Weakness typeCWE-502Deserialization of untrusted data
How to fix
Update
- aioseo all_in_one_seo4.1.0.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| aioseo all_in_one_seo | v < 4.1.0.2 | 4.1.0.2 |
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