All in One SEO Pack < 4.1.0.2 - Admin RCE via unserialize
CVE-2021-24307

8.8HIGH

Key Information:

Vendor
Wordpress
Status
All In One Seo – Best WordPress Seo Plugin – Easily Improve Your Seo Rankings
Vendor
CVE Published:
24 May 2021

Badges

👾 Exploit Exists🟡 Public PoC

Summary

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.

Affected Version(s)

All in One SEO – Best WordPress SEO Plugin – Easily Improve Your SEO Rankings 4.1.0.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2021-24307-all-in-one-seo-pack-admin-rce
Created by darkpills

References

https://wpscan.com/vulnerability/ab2c94d2-f6c4-418b-bd14-...
x_refsource_CONFIRM
https://aioseo.com/changelog/
x_refsource_MISC

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Vincent MICHEL
.