CVE-2021-21425

Katalog CVE

CVSS 9.8 · Critical EPSS 80,6%

Kerentanan Improper Access Control pada getgrav grav-plugin-admin. Skor CVSS 3.1 9.8 (Critical) menurut NVD.

Deskripsi (NVD)

Grav Admin Plugin is an HTML user interface that provides a way to configure Grav and create and modify pages. In versions 1.10.7 and earlier, an unauthenticated user can execute some methods of administrator controller without needing any credentials. Particular method execution will result in arbitrary YAML file creation or content change of existing YAML files on the system. Successfully exploitation of that vulnerability results in configuration changes, such as general site information change, custom scheduler job definition, etc. Due to the nature of the vulnerability, an adversary can change some part of the webpage, or hijack an administrator account, or execute operating system command under the context of the web-server user. This vulnerability is fixed in version 1.10.8. Blocking access to the `/admin` path from untrusted sources can be applied as a workaround.

Rincian

Terbit di NVD

7 April 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

9.8 (Critical), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-284: Improper Access Control

EPSS (30 hari)

80,6% peluang dieksploitasi; lebih tinggi dari 99,6% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• http://packetstormsecurity.com/files/162283/GravCMS-1.10.7-Remote-Command-Execution.html advisory pihak ketiga · vdb entry
• http://packetstormsecurity.com/files/162457/GravCMS-1.10.7-Remote-Command-Execution.html advisory pihak ketiga · vdb entry
• https://github.com/getgrav/grav-plugin-admin/security/advisories/GHSA-6f53-6qgv-39pj advisory pihak ketiga
• https://pentest.blog/unexpected-journey-7-gravcms-unauthenticated-arbitrary-yaml-write-update-leads-to-code-ex... exploit · advisory pihak ketiga