CVE-2021-21327

Unsafe Reflection in getItemForItemtype()

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

GLPI is an open-source asset and IT management software package that provides ITIL Service Desk features, licenses tracking and software auditing. In GLPI before version 9.5.4 non-authenticated user can remotely instantiate object of any class existing in the GLPI environment that can be used to carry out malicious attacks, or to start a “POP chain”. As an example of direct impact, this vulnerability affects integrity of the GLPI core platform and third-party plugins runtime misusing classes which implement some sensitive operations in their constructors or destructors. This is fixed in version 9.5.4.

GLPI es un paquete de software de gestión de activos y TI de código abierto que proporciona funcionalidades de ITIL Service Desk, seguimiento de licencias y auditoría de software. En GLPI versiones anteriores a 9.5.4, el usuario no autenticado puede instanciar de forma remota un objeto de cualquier clase existente en el entorno GLPI que puede ser usado para llevar a cabo ataques maliciosos o para iniciar una “POP chain”. Como ejemplo de impacto directo, esta vulnerabilidad afecta la integridad de la plataforma central de GLPI y las clases de uso inapropiado del tiempo de ejecución de plugins de terceros que implementan algunas operaciones sensibles en sus constructores o destructores. Esto es corregido en la versión 9.5.4

GLPI versions 9.5.3 and below suffer from a fromtype unsafe reflection vulnerability.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

High

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

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
2021-03-08 CVE Published
2024-08-03 CVE Updated
2024-08-03 First Exploit
2024-11-05 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-470: Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')
CWE-862: Missing Authorization

CAPEC

References (3)

URL	Tag	Source
https://github.com/glpi-project/glpi/releases/tag/9.5.4	Release Notes

URL	Date	SRC
http://packetstormsecurity.com/files/161680/GLPI-9.5.3-Unsafe-Reflection.html	2024-08-03

URL	Date	SRC

URL	Date	SRC
https://github.com/glpi-project/glpi/security/advisories/GHSA-qmw7-w2m4-rjwp	2023-06-26

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Glpi-project Search vendor "Glpi-project"		Glpi Search vendor "Glpi-project" for product "Glpi"				< 9.5.4 Search vendor "Glpi-project" for product "Glpi" and version " < 9.5.4"		-		Affected