CVE-2021-29439

Plugins can be installed with minimal admin privileges

Published: Apr 13, 2021Updated: Nov 21, 2024 Sources: CVE List NVDCWE-863

7.2HIGH

Description

The Grav admin plugin prior to version 1.10.11 does not correctly verify caller's privileges. As a consequence, users with the permission `admin.login` can install third-party plugins and their dependencies. By installing the right plugin, an attacker can obtain an arbitrary code execution primitive and elevate their privileges on the instance. The vulnerability has been addressed in version 1.10.11. As a mitigation blocking access to the `/admin` path from untrusted sources will reduce the probability of exploitation.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:HPrivileges Required

High

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:HConfidentiality

High

I:HIntegrity

High

A:HAvailability

High

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Weaknesses

CWE-863

Affected Products

getgrav

oss-projectaka grav, getgrav/grav, grav-plugin-admin

grav adminOn-premWeb App

Web & CMS Plugins / cms-core

grav-plugin-adminOn-premCMS Plugin

Web & CMS Plugins / cms-core

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques

Initial Access

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References

https://github.com/getgrav/grav-plugin-admin/commit/a220359877fd1281f76ba732e5308e0e3002e4b1

github.com

https://github.com/getgrav/grav-plugin-admin/security/advisories/GHSA-wg37-cf5x-55hq

github.com

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