PHP on Windows: Reserved Device Names Are Not Rejected Before File/Stream I/O which can cause DoS
En bref
Sévérité
MEDIUM 6.9
EPSS
EPSS 0.37 % · centile 30 (2026-10-27)
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
php
Statut NVD
Analyzed
Description
On Windows, PHP's filesystem and stream APIs do not reject reserved device names such as CON, PRN, AUX, NUL, COM1 to COM9, LPT1 to LPT9, CONIN$ and CONOUT$ when they appear as a component of a path. An attacker-controlled filename therefore reaches CreateFileW() and opens a device instead of the regular file the application expected, which can block or hang the request and exhaust worker processes.
