CVE-2024-43269

Backup and Restore Wordpress <= 1.50 - Cross-Site Request Forgery to Backup Trigger

2024-08-12 00:00

Strategic Overview

Status: Patched in 2.0.0
Affected Plugin: WP BackItUp Community Edition
Affected Version: <= 1.50
CVSS: 6.5Medium
Weakness type: CWE-352 · Cross-Site Request Forgery (CSRF)
CVE: CVE-2024-43269

View all WP BackItUp Community Edition vulnerabilities

At a glance

CVE-2024-43269 is a medium-severity Cross-Site Request Forgery (CSRF) vulnerability in the WP BackItUp Community Edition WordPress plugin, affecting versions <= 1.50. It carries a CVSS score of 6.5 (reachable over the network; low attack complexity; high confidentiality impact). Exploitation requires no authentication. The issue is fixed in version 2.0.0; sites on affected versions should update now. Disclosed August 2024, reported by Ananda Dhakal.

Vulnerability Overview

The Backup and Restore WordPress – Backup Plugin plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.50. This is due to missing or incorrect nonce validation on the ajax_queue_manual_backup() function. This makes it possible for unauthenticated attackers to trigger backups via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

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 confidentiality.

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

WP BackItUp Community Edition <= 1.50 carries this weakness at ajax_queue_manual_backup(), and reaching it 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 WP BackItUp Community Edition the fix is 2.0.0: builds <= 1.50 are affected, anything from 2.0.0 onward is not.

Remediation

Update to version 2.0.0, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to WP BackItUp Community Edition: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: WP BackItUp Community Edition 2.0.0 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2024-43269 https://www.wordfence.com/threat-intel/vulnerabilities/id/fa15939c-44eb-45e5-95d7-49307912f21c https://nvd.nist.gov/vuln/detail/CVE-2024-43269

Related records

Other vulnerabilities in WP BackItUp Community Edition

CVSS Vector

6.5

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeUnchanged
ConfidentialityHigh
IntegrityNone
AvailabilityNone

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