Urvanov Syntax Highlighter <= 2.8.33 - Cross-Site Request Forgery via init_ajax

2023-10-06 00:00

Kévin Mosbahi (Mika)

Strategic Overview

Status

Patched in 2.8.34

Affected PluginUrvanov Syntax Highlighter

Affected Version<= 2.8.33

CVSS5.4Medium

CVECVE-2023-45106

View all Urvanov Syntax Highlighter vulnerabilities

Vulnerability Overview

The Urvanov Syntax Highlighter plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 2.8.33. This is due to missing or incorrect nonce validation on the init_ajax function. This makes it possible for unauthenticated attackers to perform multiple actions including saving, submitting, duplicating, and deleting syntax highlighting blocks via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Technical Analysis

REMEDIATION: Update to version 2.8.34, or a newer patched version --- 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-2023-45106 https://www.wordfence.com/threat-intel/vulnerabilities/id/3c85fa64-4761-4b92-bd4f-7c220cf18288

CVSS Vector

5.4

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

Base

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

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