WHMCS Bridge <= 6.1 Subscriber+ Stored Cross-Site Scripting

2022-01-14 00:00

Kazuto Kokonoe

Strategic Overview

Status

Patched in 6.3

Affected PluginWHMCS Bridge

Affected Version<= 6.1

CVSS6.4Medium

CVECVE-2021-4074

View all WHMCS Bridge vulnerabilities

Vulnerability Overview

The WHMCS Bridge WordPress plugin is vulnerable to Stored Cross-Site Scripting via the cc_whmcs_bridge_url parameter found in the ~/whmcs-bridge/bridge_cp.php file which allows attackers to inject arbitrary web scripts, in versions up to and including 6.1. Due to missing authorization checks on the cc_whmcs_bridge_add_admin function, low-level authenticated users such as subscribers can exploit this vulnerability.

Technical Analysis

REMEDIATION: Update to version 6.3, 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-2021-4074 https://www.wordfence.com/threat-intel/vulnerabilities/id/24ba85a0-dbc7-4c9d-a67f-d449c1d275ab

CVSS Vector

6.4

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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