Fathom Analytics <= 3.0.4 - Stored Cross-Site Scripting

2021-12-08 13:23

José Aguilera

Strategic Overview

Status

Patched in 3.0.5

Affected PluginFathom Analytics for WP

Affected Version<= 3.0.4

CVSS4.8Medium

CVECVE-2021-41836

View all Fathom Analytics for WP vulnerabilities

Vulnerability Overview

The Fathom Analytics WordPress plugin is vulnerable to Stored Cross-Site Scripting due to insufficient input validation and escaping via the $site_id parameter found in the ~/fathom-analytics.php file which allowed attackers with administrative user access to inject arbitrary web scripts, in versions up to and including 3.0.4. This affects multi-site installations where unfiltered_html is disabled for administrators, and sites where unfiltered_html is disabled.

Technical Analysis

REMEDIATION: Update to version 3.0.5, or a newer patched version --- IDENTIFIER: CWE-79 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

External References

https://www.cve.org/CVERecord?id=CVE-2021-41836 https://www.wordfence.com/threat-intel/vulnerabilities/id/728cec6e-a246-4e2c-a906-750518bae0a4

CVSS Vector

4.8

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

Base

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

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