CVE-2021-37627

Privilege escalation via form generator

Severity Score

7.2

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Contao is an open source CMS that allows creation of websites and scalable web applications. In affected versions it is possible to gain privileged rights in the Contao back end. Installations are only affected if they have untrusted back end users who have access to the form generator. All users are advised to update to Contao 4.4.56, 4.9.18 or 4.11.7. As a workaround users may disable the form generator or disable the login for untrusted back end users.

Contao es un CMS de código abierto que permite la creación de sitios y aplicaciones web escalables. En las versiones afectadas es posible obtener derechos privilegiados en el back-end de Contao. Las instalaciones sólo están afectadas si tienen usuarios de back-end no confiables que tengan acceso al generador de formularios. Se recomienda a todos los usuarios que actualicen a Contao versiones 4.4.56, 4.9.18 o 4.11.7. Como solución, los usuarios pueden desactivar el generador de formularios o desactivar el inicio de sesión para usuarios de back end no confiables

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

High

Privileges Required

High

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-07-29 CVE Reserved
2021-08-11 CVE Published
2023-03-07 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-269: Improper Privilege Management

CAPEC

References (2)

URL	Tag	Source
https://github.com/contao/contao/security/advisories/GHSA-hq5m-mqmx-fw6m	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://contao.org/en/security-advisories/privilege-escalation-with-the-form-generator.html	2021-08-20

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Contao Search vendor "Contao"		Contao Search vendor "Contao" for product "Contao"				>= 4.4.0 < 4.4.56 Search vendor "Contao" for product "Contao" and version " >= 4.4.0 < 4.4.56"		-		Affected
Contao Search vendor "Contao"		Contao Search vendor "Contao" for product "Contao"				>= 4.9.0 < 4.9.18 Search vendor "Contao" for product "Contao" and version " >= 4.9.0 < 4.9.18"		-		Affected
Contao Search vendor "Contao"		Contao Search vendor "Contao" for product "Contao"				>= 4.11.0 < 4.11.7 Search vendor "Contao" for product "Contao" and version " >= 4.11.0 < 4.11.7"		-		Affected
Contao Search vendor "Contao"		Contao Search vendor "Contao" for product "Contao"				4.0.0 Search vendor "Contao" for product "Contao" and version "4.0.0"		-		Affected
Contao Search vendor "Contao"		Contao Search vendor "Contao" for product "Contao"				4.1.0 Search vendor "Contao" for product "Contao" and version "4.1.0"		-		Affected
Contao Search vendor "Contao"		Contao Search vendor "Contao" for product "Contao"				4.2.0 Search vendor "Contao" for product "Contao" and version "4.2.0"		-		Affected
Contao Search vendor "Contao"		Contao Search vendor "Contao" for product "Contao"				4.3.0 Search vendor "Contao" for product "Contao" and version "4.3.0"		-		Affected
Contao Search vendor "Contao"		Contao Search vendor "Contao" for product "Contao"				4.5.0 Search vendor "Contao" for product "Contao" and version "4.5.0"		-		Affected
Contao Search vendor "Contao"		Contao Search vendor "Contao" for product "Contao"				4.6.0 Search vendor "Contao" for product "Contao" and version "4.6.0"		-		Affected
Contao Search vendor "Contao"		Contao Search vendor "Contao" for product "Contao"				4.7.0 Search vendor "Contao" for product "Contao" and version "4.7.0"		-		Affected
Contao Search vendor "Contao"		Contao Search vendor "Contao" for product "Contao"				4.8.0 Search vendor "Contao" for product "Contao" and version "4.8.0"		-		Affected
Contao Search vendor "Contao"		Contao Search vendor "Contao" for product "Contao"				4.10.0 Search vendor "Contao" for product "Contao" and version "4.10.0"		-		Affected