CVE-2022-38062

Download Theme <= 1.0.9 - Cross-Site Request Forgery via dtwap_download()

2023-05-24 00:00

Strategic Overview

Status: Patched in 1.1.0
Affected Plugin: Download Theme
Affected Version: <= 1.0.9
CVSS: 5.3Medium
Weakness type: CWE-352 · Cross-Site Request Forgery (CSRF)
CVE: CVE-2022-38062

At a glance

CVE-2022-38062 is a medium-severity Cross-Site Request Forgery (CSRF) vulnerability in the Download Theme WordPress plugin, affecting versions <= 1.0.9. It carries a CVSS score of 5.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 1.1.0; sites on affected versions should update now. Disclosed May 2023, reported by István Márton.

Vulnerability Overview

The Download Theme plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 1.0.9. This is due to missing or incorrect nonce validation on the dtwap_download() function. This makes it possible for unauthenticated attackers to download theme zips on others computers, 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, and no interaction from a victim user.

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

Download Theme <= 1.0.9 carries this weakness at dtwap_download(), 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 Download Theme the fix is 1.1.0: builds <= 1.0.9 are affected, anything from 1.1.0 onward is not.

Remediation

Update to version 1.1.0, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Download Theme: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Download Theme 1.1.0 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2022-38062 https://www.wordfence.com/threat-intel/vulnerabilities/id/50ca7cf8-bb47-42ea-badc-8bfe0328cbb0 https://nvd.nist.gov/vuln/detail/CVE-2022-38062

CVSS Vector

5.3

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityLow
IntegrityNone
AvailabilityNone

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