CVE-2023-43643

mXSS in AntiSamy

Severity Score

6.1

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

AntiSamy is a library for performing fast, configurable cleansing of HTML coming from untrusted sources. Prior to version 1.7.4, there is a potential for a mutation XSS (mXSS) vulnerability in AntiSamy caused by flawed parsing of the HTML being sanitized. To be subject to this vulnerability the `preserveComments` directive must be enabled in your policy file and also allow for certain tags at the same time. As a result, certain crafty inputs can result in elements in comment tags being interpreted as executable when using AntiSamy's sanitized output. This issue has been patched in AntiSamy 1.7.4 and later.

AntiSamy es una librería para realizar una limpieza rápida y configurable de HTML proveniente de fuentes no confiables. Antes de la versión 1.7.4, existe la posibilidad de que se produzca una vulnerabilidad de mutación XSS (mXSS) en AntiSamy causada por un análisis defectuoso del HTML que se está sanitizando. Para estar sujeto a esta vulnerabilidad, la directiva `preserveComments` debe estar habilitada en su archivo de política y también permitir ciertas etiquetas al mismo tiempo. Como resultado, ciertas entradas astutas pueden dar lugar a que los elementos de las etiquetas de comentarios se interpreten como ejecutables cuando se utiliza la salida sanitizada de AntiSamy. Este problema se solucionó en AntiSamy 1.7.4 y versiones posteriores.

*Credits: N/A

CVSS Scores

NISTv3.1 6.1

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2023-09-20 CVE Reserved
2023-10-09 CVE Published
2024-09-19 CVE Updated
2024-09-19 First Exploit
2024-10-15 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

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

CAPEC

References (2)

URL	Tag	Source

URL	Date	SRC
https://github.com/nahsra/antisamy/security/advisories/GHSA-pcf2-gh6g-h5r2	2024-09-19

URL	Date	SRC
https://github.com/nahsra/antisamy/releases/tag/v1.7.4	2023-10-13

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Antisamy Project Search vendor "Antisamy Project"		Antisamy Search vendor "Antisamy Project" for product "Antisamy"				< 1.7.4 Search vendor "Antisamy Project" for product "Antisamy" and version " < 1.7.4"		-		Affected