| 제목 | wuzhicms <=4.1.0 Arbitrary File Write (RCE) |
|---|
| 설명 | member::setAvatar() accepts a user's avatar upload. The extension of the resulting filename is derived from $_FILES['file']['name'] (the raw, client-supplied filename, which is entirely untrusted), using only strtolower(pathinfo(...)) to extract the extension — with no extension whitelist, no MIME-type validation, and no image-content validation via getimagesize()/exif_imagetype(). The file is then written directly via move_uploaded_file() into the uploadfile/member/<uid>/ directory. This directory is directly served by the web server and PHP execution is permitted there, so an attacker who uploads a .php-suffixed web shell can trigger execution simply by requesting the predictable resulting URL. |
|---|
| 원천 | ⚠️ https://github.com/wuzhicms/wuzhicms/issues/219 |
|---|
| 사용자 | ZAST.AI (UID 87884) |
|---|
| 제출 | 2026. 08. 17. AM 07:22 (1 월 ago) |
|---|
| 모더레이션 | 2026. 09. 15. AM 10:44 (29 days later) |
|---|
| 상태 | 수락 |
|---|
| VulDB 항목 | 404077 [WuzhiCMS 까지 4.1.0 Avatar Upload index.php?m=member&f=user&v=setAvatar member::setAvatar 파일 권한 상승] |
|---|
| 포인트들 | 20 |
|---|