The vulnerability stems from an "Improper Neutralization" of uploaded files. While the application might have filters for common extensions like .php or .exe , it fails to account for certain bypass techniques or secondary execution paths (such as uploading a compressed archive that the server later extracts automatically). 2. Exploitation Path A typical write-up for this exploit follows these steps:
: Ensure that upload directories have "no-execute" permissions to prevent web shells from running even if they are successfully uploaded. 52739 rar
: Uploading the 52739.rar file. If the application automatically decompresses files for "plugin installation" or "backup restoration," the shell is placed into a publicly accessible directory. The vulnerability stems from an "Improper Neutralization" of