Yii 2: Local file inclusion via view parameter name collision

The core view rendering method View::renderPhpFile() calls extract($_params_, EXTR_OVERWRITE) before the require statement that includes the view file. A caller-controlled parameter named _file_ in the $params array overwrites the internal local variable that specifies which file is included — enabling a Local File Inclusion primitive.

Impact

• Local File Inclusion (arbitrary file read via non-PHP files)
• Potential RCE if attacker can write PHP files via a separate primitive
• Information disclosure

Patches

2.0.55

Workarounds

No.