Tawk.To Live Chat <= 0.5.4 - Missing Authorization to Visitor Monitoring & Chat Removal

2021-11-08 00:00

Quentin VILLAIN (3wsec)

Strategic Overview

Status

Patched in 0.6.0

Affected PluginTawk.To Live Chat

Affected Version< 0.6.0

CVSS8.0High

CVECVE-2021-24914

View all Tawk.To Live Chat vulnerabilities

Vulnerability Overview

The Tawk.To Live Chat WordPress plugin before 0.6.0 does not have capability and CSRF checks in the tawkto_setwidget and tawkto_removewidget AJAX actions, available to any authenticated user. The first one allows low-privileged users (including simple subscribers) to change the 'tawkto-embed-widget-page-id' and 'tawkto-embed-widget-widget-id' parameters. Any authenticated user can thus link the vulnerable website to their own Tawk.to instance. Consequently, they will be able to monitor the vulnerable website and interact with its visitors (receive contact messages, answer, ...). They will also be able to display an arbitrary Knowledge Base. The second one will remove the live chat widget from pages.

Technical Analysis

REMEDIATION: Update to version 0.6.0, or a newer patched version --- IDENTIFIER: CWE-862 (Missing Authorization) The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

External References

https://www.cve.org/CVERecord?id=CVE-2021-24914 https://www.wordfence.com/threat-intel/vulnerabilities/id/4c3ee9fa-5d66-4f84-818f-ceec2f0c0b96

CVSS Vector

8.0

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

Base

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

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