Contact Form 7 Style <= 3.1.9 Cross-Site Request Forgery

2021-02-04 00:00

Chloe Chamberland

Strategic Overview

Status

Unpatched

Affected PluginContact Form 7 Style

Affected Version<= 3.1.9

CVSS8.8High

CVECVE-2021-24159

View all Contact Form 7 Style vulnerabilities

Vulnerability Overview

Due to the lack of sanitization and lack of nonce protection on the custom CSS feature, an attacker could craft a request to inject malicious JavaScript on a site using the Contact Form 7 Style WordPress plugin through 3.1.9. If an attacker successfully tricked a site’s administrator into clicking a link or attachment, then the request could be sent and the CSS settings would be successfully updated to include malicious JavaScript.

Technical Analysis

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. --- IDENTIFIER: CWE-352 (Cross-Site Request Forgery (CSRF)) The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor.

External References

https://www.cve.org/CVERecord?id=CVE-2021-24159 https://www.wordfence.com/threat-intel/vulnerabilities/id/c7b540b9-cdf1-40ea-b693-c237e76c0958

CVSS Vector

8.8

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

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