CVE-2021-24307
HighThe 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.
Published May 24, 2021 · Updated Nov 21, 2024 · Also known as b2a98c69-5f76-41f4-8a12-0523285647fb
Key Facts
Patch immediately- CVE-2021-24307 is a high-severity vulnerability (CVSS 8.8 v3.1) affecting All In One Seo (Aioseo), all-in-one-seo-pack (wordpress-plugin), All in One SEO – Best WordPress SEO Plugin – Easily Improve Your SEO Rankings.
- It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
- EPSS estimates a 53% probability of exploitation in the next 30 days.
- Fixed versions are available, including All In One Seo 4.1.0.2, All in One SEO – Best WordPress SEO Plugin – Easily Improve Your SEO Rankings 4.1.0.2, all-in-one-seo-pack 4.1.0.2.
- Brandefense priority: patch immediately, because it is very likely to be exploited soon.
CVSS v3.1
8.8
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
53%
Higher than 98.9% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
None known
Get the full CVE-2021-24307 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
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.
Affected Products
3 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| All In One SeoAioseo | See advisory | 4.1.0.2 |
| all-in-one-seo-packwordpress-plugin | See advisory | 4.1.0.2 |
| All in One SEO – Best WordPress SEO Plugin – Easily Improve Your SEO Rankings | >= 4.1.0.2 | 4.1.0.2 |
Patched Releases
All In One Seo
4.1.0.2
All in One SEO – Best WordPress SEO Plugin – Easily Improve Your SEO Rankings
4.1.0.2
all-in-one-seo-pack
4.1.0.2
Timeline
Publicly disclosed
May 24, 2021
Last updated
Nov 21, 2024
Weakness Type
- CWE-94 Improper Control of Generation of Code ('Code Injection')
- CWE-502 Deserialization of Untrusted Data
References
- advisoryhttps://aioseo.com/changelog/
- advisoryhttps://www.wordfence.com/threat-intel/vulnerabilities/id/b2a98c69-5f76-41f4-8a12-0523285647fb?source=api-prod
- advisoryhttps://www.wordfence.com/threat-intel/vulnerabilities/id/b2a98c69-5f76-41f4-8a12-0523285647fb?source=api-scan
- exploithttps://wpscan.com/vulnerability/ab2c94d2-f6c4-418b-bd14-711ed164bcf1
FAQ
Common Questions.
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.
Affected: All In One Seo (Aioseo); all-in-one-seo-pack (wordpress-plugin); All in One SEO – Best WordPress SEO Plugin – Easily Improve Your SEO Rankings versions >= 4.1.0.2. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including All In One Seo 4.1.0.2, All in One SEO – Best WordPress SEO Plugin – Easily Improve Your SEO Rankings 4.1.0.2, all-in-one-seo-pack 4.1.0.2.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
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