From: pornel at despammed dot com
Operating system: All? Win32 tested
PHP version: 5CVS-2005-07-20 (dev)
PHP Bug Type: *Directory/Filesystem functions
Bug description: NUL allowed in file paths
Description:
------------
NUL character (C string terminator) is allowed in file paths passed to OS
functions, which causes unexpected truncation of string.
This is a security risk for popular, sloppy code like:
include($_GET['page'].'.i-feel-safe.php');
because ?page=/etc/passwd%00 circumvents such "protection".
IMHO PHP should throw an error if PHP string can't be safely converted to
C string.
Reproduce code:
---------------
<?php
fopen(urldecode("test%00.html"),"r");
Expected result:
----------------
Error: illegal path
Actual result:
--------------
Warning: fopen(test) [function.fopen]: failed to open stream: No such file
or directory in c:\www\test.php5 on line 2
--
Edit bug report at http://bugs.php.net/?id=33784&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=33784&r=trysnapshot4
Try a CVS snapshot (php5.0):
http://bugs.php.net/fix.php?id=33784&r=trysnapshot50
Try a CVS snapshot (php5.1):
http://bugs.php.net/fix.php?id=33784&r=trysnapshot51
Fixed in CVS: http://bugs.php.net/fix.php?id=33784&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=33784&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=33784&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=33784&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=33784&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=33784&r=support
Expected behavior: http://bugs.php.net/fix.php?id=33784&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=33784&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=33784&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=33784&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=33784&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=33784&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=33784&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=33784&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=33784&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=33784&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=33784&r=mysqlcfg
