CVE-2021-21389

BuddyPress privilege escalation via REST API

Severity Score

8.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

BuddyPress is an open source WordPress plugin to build a community site. In releases of BuddyPress from 5.0.0 before 7.2.1 it's possible for a non-privileged, regular user to obtain administrator rights by exploiting an issue in the REST API members endpoint. The vulnerability has been fixed in BuddyPress 7.2.1. Existing installations of the plugin should be updated to this version to mitigate the issue.

BuddyPress es un plugin de WordPress de código abierto para crear un sitio comunitario. En versiones de BuddyPress de 5.0.0 versiones anteriores a 7.2.1, es posible para un usuario regular sin privilegios obtener derechos de administrador al explotar un problema en el endpoint de los miembros de la API REST. La vulnerabilidad ha sido corregida en BuddyPress versión 7.2.1. Las instalaciones existentes del plugin deben actualizarse a esta versión para mitigar el problema.

*Credits: Kien

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-12-22 CVE Reserved
2021-03-16 CVE Published
2021-05-31 First Exploit
2024-08-03 CVE Updated
2024-10-03 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-863: Incorrect Authorization

CAPEC

References (4)

URL	Tag	Source
https://github.com/buddypress/BuddyPress/security/advisories/GHSA-m6j4-8r7p-wpp3	Third Party Advisory

URL	Date	SRC
https://github.com/HoangKien1020/CVE-2021-21389	2021-05-31

URL	Date	SRC

URL	Date	SRC
https://buddypress.org/2021/03/buddypress-7-2-1-security-release	2021-04-01
https://codex.buddypress.org/releases/version-7-2-1	2021-04-01

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Buddypress Search vendor "Buddypress"		Buddypress Search vendor "Buddypress" for product "Buddypress"				>= 5.0.0 < 7.2.1 Search vendor "Buddypress" for product "Buddypress" and version " >= 5.0.0 < 7.2.1"		wordpress		Affected