CVE-2022-23494

Cross-site scripting vulnerability in TinyMCE alerts

Severity Score

6.1

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

tinymce is an open source rich text editor. A cross-site scripting (XSS) vulnerability was discovered in the alert and confirm dialogs when these dialogs were provided with malicious HTML content. This can occur in plugins that use the alert or confirm dialogs, such as in the `image` plugin, which presents these dialogs when certain errors occur. The vulnerability allowed arbitrary JavaScript execution when an alert presented in the TinyMCE UI for the current user. This vulnerability has been patched in TinyMCE 5.10.7 and TinyMCE 6.3.1 by ensuring HTML sanitization was still performed after unwrapping invalid elements. Users are advised to upgrade to either 5.10.7 or 6.3.1. Users unable to upgrade may ensure the the `images_upload_handler` returns a valid value as per the images_upload_handler documentation.

tinymce es un editor de texto enriquecido de código abierto. Se descubrió una vulnerabilidad de Cross-Site Scripting (XSS) en los cuadros de diálogo de alerta y confirmación cuando estos cuadros de diálogo contenían contenido HTML malicioso. Esto puede ocurrir en complementos que utilizan cuadros de diálogo de alerta o confirmación, como en el complemento "image", que presenta estos cuadros de diálogo cuando ocurren ciertos errores. La vulnerabilidad permitía la ejecución arbitraria de JavaScript cuando se presentaba una alerta en la interfaz de usuario de TinyMCE para el usuario actual. Esta vulnerabilidad se parchó en TinyMCE 5.10.7 y TinyMCE 6.3.1 asegurando que aún se realizara la sanitización de HTML después de desempaquetar elementos no válidos. Se recomienda a los usuarios que actualicen a 5.10.7 o 6.3.1. Los usuarios que no puedan actualizar pueden asegurarse de que `images_upload_handler` devuelva un valor válido según la documentación de images_upload_handler.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2022-01-19 CVE Reserved
2022-12-08 CVE Published
2024-08-03 CVE Updated
2024-08-27 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CAPEC

References (6)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://github.com/tinymce/tinymce/commit/6923d85eba6de3e08ebc9c5a387b5abdaa21150e	2022-12-12
https://github.com/tinymce/tinymce/commit/8bb2d2646d4e1a718fce61a775fa22e9d317b32d	2022-12-12
https://github.com/tinymce/tinymce/security/advisories/GHSA-gg8r-xjwq-4w92	2022-12-12

URL	Date	SRC
https://www.tiny.cloud/docs/release-notes/release-notes5107/#securityfixes	2022-12-12
https://www.tiny.cloud/docs/tinymce/6/6.3-release-notes/#security-fixes	2022-12-12
https://www.tiny.cloud/docs/tinymce/6/file-image-upload/#images_upload_handler	2022-12-12

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Tiny Search vendor "Tiny"		Tinymce Search vendor "Tiny" for product "Tinymce"				< 5.10.7 Search vendor "Tiny" for product "Tinymce" and version " < 5.10.7"		-		Affected
Tiny Search vendor "Tiny"		Tinymce Search vendor "Tiny" for product "Tinymce"				>= 6.0.0 < 6.3.1 Search vendor "Tiny" for product "Tinymce" and version " >= 6.0.0 < 6.3.1"		-		Affected