CVE-2021-24446

Remove Footer Credit <= 1.0.5 - Cross-Site Request Forgery to Stored Cross-Site Scripting

2021-07-12 00:00

Strategic Overview

Status: Patched in 1.0.6
Affected Plugin: Remove Footer Credit
Affected Version: <= 1.0.5
CVSS: 6.1Medium
Weakness type: CWE-352 · Cross-Site Request Forgery (CSRF)
CVE: CVE-2021-24446

View all Remove Footer Credit vulnerabilities

At a glance

CVE-2021-24446 is a medium-severity Cross-Site Request Forgery (CSRF) vulnerability in the Remove Footer Credit WordPress plugin, affecting versions <= 1.0.5. It carries a CVSS score of 6.1 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 1.0.6; sites on affected versions should update now. Disclosed July 2021, reported by apple502j.

Vulnerability Overview

The Remove Footer Credit WordPress plugin before 1.0.6 does not have CSRF check in place when saving its settings, which could allow attacker to make logged in admins change them and lead to Stored XSS issue as well due to the lack of sanitisation

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 Remove Footer Credit <= 1.0.5 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 Remove Footer Credit the fix is 1.0.6: builds <= 1.0.5 are affected, anything from 1.0.6 onward is not.

Remediation

Update to version 1.0.6, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Remove Footer Credit: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Remove Footer Credit 1.0.6 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2021-24446 https://www.wordfence.com/threat-intel/vulnerabilities/id/526a1b9c-953b-4ad7-91e1-d2e480b967ac https://nvd.nist.gov/vuln/detail/CVE-2021-24446

Related records

Other vulnerabilities in Remove Footer Credit

CVSS Vector

6.1

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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