CVE-2021-21365

Cross-Site Scripting in Content Rendering

Severity Score

5.4

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Bootstrap Package is a theme for TYPO3. It has been discovered that rendering content in the website frontend is vulnerable to cross-site scripting. A valid backend user account is needed to exploit this vulnerability. Users of the extension, who have overwritten the affected templates with custom code must manually apply the security fix. Update to version 7.1.2, 8.0.8, 9.1.4, 10.0.10 or 11.0.3 of the Bootstrap Package that fix the problem described. Updated version are available from the TYPO3 extension manager, Packagist and at https://extensions.typo3.org/extension/download/bootstrap_package/.

Bootstrap Package es un tema para TYPO3. Se ha descubierto que la renderización de contenido en la interfaz del sitio web es vulnerable a ataques de tipo cross-site scripting. Es necesario una cuenta de usuario de backend válida para explotar esta vulnerabilidad. Los usuarios de la extensión que hayan sobrescrito las plantillas afectadas con código personalizado deben aplicar manualmente la corrección de seguridad. Actualiza a versiones 7.1.2, 8.0.8, 9.1.4, 10.0.10 o 11.0.3 del paquete Bootstrap que corrige el problema descrito. La versión actualizada está disponible en el administrador de extensiones TYPO3, Packagist y en https://extensions.typo3.org/extension/download/bootstrap_package/

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

Single

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-12-22 CVE Reserved
2021-04-27 CVE Published
2023-03-08 EPSS Updated
2024-08-03 CVE Updated
2024-08-03 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

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

CAPEC

References (3)

URL	Tag	Source

URL	Date	SRC
https://github.com/benjaminkott/bootstrap_package/security/advisories/GHSA-p48w-vf3c-rqjx	2024-08-03
https://typo3.org/security/advisory/typo3-ext-sa-2021-007	2024-08-03

URL	Date	SRC
https://github.com/benjaminkott/bootstrap_package/commit/de3a568fc311d6712d9339643e51e8627c80530b	2021-05-07

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Typo3 Search vendor "Typo3"		Typo3 Search vendor "Typo3" for product "Typo3"				< 7.1.2 Search vendor "Typo3" for product "Typo3" and version " < 7.1.2"		-		Affected
Typo3 Search vendor "Typo3"		Typo3 Search vendor "Typo3" for product "Typo3"				>= 8.0.0 < 8.0.8 Search vendor "Typo3" for product "Typo3" and version " >= 8.0.0 < 8.0.8"		-		Affected
Typo3 Search vendor "Typo3"		Typo3 Search vendor "Typo3" for product "Typo3"				>= 9.0.0 < 9.0.4 Search vendor "Typo3" for product "Typo3" and version " >= 9.0.0 < 9.0.4"		-		Affected
Typo3 Search vendor "Typo3"		Typo3 Search vendor "Typo3" for product "Typo3"				>= 9.1.0 < 9.1.3 Search vendor "Typo3" for product "Typo3" and version " >= 9.1.0 < 9.1.3"		-		Affected
Typo3 Search vendor "Typo3"		Typo3 Search vendor "Typo3" for product "Typo3"				>= 10.0.0 < 10.0.10 Search vendor "Typo3" for product "Typo3" and version " >= 10.0.0 < 10.0.10"		-		Affected
Typo3 Search vendor "Typo3"		Typo3 Search vendor "Typo3" for product "Typo3"				>= 11.0.0 < 11.0.3 Search vendor "Typo3" for product "Typo3" and version " >= 11.0.0 < 11.0.3"		-		Affected