Strategic Overview
- Status
- Patched in 2.3.7
- Affected Plugin
- One User Avatar | User Profile Picture
- Affected Version
< 2.3.7- CVSS
- 6.5Medium
- Weakness type
- CWE-352 · Cross-Site Request Forgery (CSRF)
- CVE
CVE-2021-24675
At a glance
CVE-2021-24675 is a medium-severity Cross-Site Request Forgery (CSRF) vulnerability in the One User Avatar WordPress plugin, affecting versions < 2.3.7. It carries a CVSS score of 6.5 (reachable over the network; low attack complexity; high integrity impact). Exploitation requires no authentication. The issue is fixed in version 2.3.7; sites on affected versions should update now. Disclosed September 2021, reported by apple502j.
Vulnerability Overview
The One User Avatar WordPress plugin before 2.3.7 does not check for CSRF when updating the Avatar in page where the [avatar_upload] shortcode is embed. As a result, attackers could make logged in user change their avatar via a CSRF attack
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site. A successful exploit has high impact on integrity.
CWE-352: Cross-Site Request Forgery (CSRF)
Reaching this weakness in One User Avatar < 2.3.7 takes a caller who can reach the endpoint. Cross-site request forgery abuses the fact that browsers attach a victim's cookies to any request, so a state-changing action that only checks who you are, not whether you meant to act, can be triggered from another site.
An attacker who gets a logged-in user to load a crafted page can perform that action as them, with the impact scaling to whatever the victim's role is allowed to do. For One User Avatar the fix is 2.3.7: builds < 2.3.7 are affected, anything from 2.3.7 onward is not.
Remediation
Update to version 2.3.7, or a newer patched version
How does WordSec protect against this?
The attempt arrives as an ordinary request to One User Avatar: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: One User Avatar 2.3.7 closes this, and updating the plugin is the step that ends it.
- Firewall
- Alerts
External References
Related records
Other vulnerabilities in One User Avatar | User Profile Picture
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