ID: 12121
Updated by: jflemer
Reported By: [EMAIL PROTECTED]
Old Status: Open
Status: Closed
Bug Type: *Directory/Filesystem functions
Operating System: OpenBSD 2.7
PHP Version: 4.0.6
Old Assigned To:
Assigned To: jflemer
New Comment:
o Fixed Bug #12121: chdir and safe_mode
- [ ext/standard/dir.c ] changed php_checkuid() to use
CHECKUID_ALLOW_ONLY_FILE instead of CHECKUID_ALLOW_ONLY_DIR
- [ main/safe_mode.h ] added new checkuid mode:
CHECKUID_ALLOW_ONLY_FILE: skips directory check if file check
fails
- [ main/safe_mode.c ] added code for new checkuid mode
Previous Comments:
------------------------------------------------------------------------
[2001-07-12 21:23:11] [EMAIL PROTECTED]
[ in ext/standard/dir.c:274 ]
I think that php_checkuid() should be called with CHECKUID_ALLOW_ONLY_FILE (whcih does
not exist yet) instead of CHECKUID_ALLOW_ONLY_DIR. Meaning -- if the passed "filename"
does not meet UID/GID test, it should *not* try stripping the last element and trying
agian.
I am working on bug #12119, which is (sort of) related.
------------------------------------------------------------------------
[2001-07-12 20:39:03] [EMAIL PROTECTED]
php with safe_mode actived.
./configure --enable-safe-mode \
--with-apache=../apache-1.3.19
Default php.ini except safe_mode on.
Contexte:
--------
following script is /home/fred/chdir.php
/home/fred/chdir.php is 3654/3654 (fred/fred)
/home/fred is 3654/3654 (fred/fred) mode 755
/home is 0/0 (root/wheel) mode 755
httpd runs as www. As php is an apache module,
php scripts are running as www too.
Script (output follows)
------
<?
print "current directory" . getcwd() . "<br><br>";
$l = array (".", "/home/fred/", "/home/fred/.",
"/home/fred/./../", "/home/fred/./", "/home/");
foreach ($l as $wd) {
if (chdir ("$wd")) {
print "chdir($wd) OK <br>";
}
else {
print "chdir($wd) error <br>";
}
print "current directory " . getcwd() . "<br><br>";
}
?>
Ouput
-----
current directory/home/fred
chdir(.) OK
current directory /home/fred
Warning: SAFE MODE Restriction in effect. The script whose uid is 3564 is not allowed
to access /home/fred owned by uid 0 in /home/fred/chdir.php
on line 7
chdir(/home/fred/) error
current directory /home/fred
chdir(/home/fred/.) OK
current directory /home/fred
chdir(/home/fred/./../) OK
current directory /home
chdir(/home/fred/./) OK
current directory /home/fred
Warning: Unable to access /home in /home/fred/chdir.php on line 7
chdir(/home/) error
current directory /home/fred
------------------------------------------------------------------------
Edit this bug report at http://bugs.php.net/?id=12121&edit=1
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