PHP 5 before 5.2.3 does not enforce the open_basedir or safe_mode restriction in certain cases, which allows context-dependent attackers to determine the existence of arbitrary files by checking if the readfile function returns a string. NOTE: this issue might also involve the realpath function.
| Software | From | Fixed in |
|---|---|---|
| php / php | 5.0.0 | 5.2.3 |