CVE-2021-24784

WP Admin Logo Changer <= 1.0 - Plugin's Settings Update via Cross-Site Request Forgery

2021-11-15 00:00

Strategic Overview

Status: Unpatched
Affected Plugin: WP Admin Logo Changer
Affected Version: <= 1.0
CVSS: 4.3Medium
Weakness type: CWE-352 · Cross-Site Request Forgery (CSRF)
CVE: CVE-2021-24784

View all WP Admin Logo Changer vulnerabilities

At a glance

CVE-2021-24784 is a medium-severity Cross-Site Request Forgery (CSRF) vulnerability in the WP Admin Logo Changer WordPress plugin, affecting versions <= 1.0. It carries a CVSS score of 4.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. No fixed release has been reported yet; treat installations running this software as exposed. Disclosed November 2021, reported by apple502j.

Vulnerability Overview

The WP Admin Logo Changer WordPress plugin through 1.0 does not have CSRF check when saving its settings, which could allow attackers to make a logged in admin update them 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.

CWE-352: Cross-Site Request Forgery (CSRF)

Reaching this weakness in WP Admin Logo Changer <= 1.0 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. No fixed build of this plugin is recorded for WP Admin Logo Changer yet, so installs running <= 1.0 stay exposed until the vendor ships one.

Remediation

No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement.

How does WordSec protect against this?

The attempt arrives as an ordinary request to WP Admin Logo Changer: WordSec's web application firewall inspects request payloads before WordPress loads them. No patched version is recorded yet, which is the case where a filtering layer matters most, because there is nothing to update to.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2021-24784 https://www.wordfence.com/threat-intel/vulnerabilities/id/cd01d83e-a337-4f93-8bd0-0c9f3c786583 https://nvd.nist.gov/vuln/detail/CVE-2021-24784

CVSS Vector

4.3

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeUnchanged
ConfidentialityNone
IntegrityLow
AvailabilityNone

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