From: zlo at canada dot com
Operating system: RedHat 7.2
PHP version: 4CVS-2003-02-18 (stable)
PHP Bug Type: Apache related
Bug description: cgi binary parses itself when called directly
when PHP cgi binary is called from cgi-bin without cgi-redirect, it parses
itself (argv[0] of the binary, whatever that happens to be)! i don't think
it represents much of a security problem (it still does to some extent,
because it reveals path to php and default settings), and no sane person
will run the cgi binary without cgi-redirect, but i don't think its the
way its supposed to be either..
here is a simple example; this also works with the php binary itself in
place of this binary.
this results in some binary output and the typical phpinfo() page in the
middle:
# cat php.c
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
const char *PHP_BINARY="/path/to/php/bin/php";
const char * dummy="<?php phpinfo(); ?>";
int main(int argc, char *argv[]){
execl(PHP_BINARY,argv[0],0);
return 1;
};
p.s. btw this simple wrapper (without the phpinfo() part, or course) can
be used as a workaround for the vulnerability with cgi-redirect that
resulted in the release of 4.3.1 since it removes parameters before
exec'ing php itself..
p.p.s. where can i post "feedback"? i can't seem to find it..
--
Edit bug report at http://bugs.php.net/?id=22270&edit=1
--
Try a CVS snapshot: http://bugs.php.net/fix.php?id=22270&r=trysnapshot
Fixed in CVS: http://bugs.php.net/fix.php?id=22270&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=22270&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=22270&r=needtrace
Try newer version: http://bugs.php.net/fix.php?id=22270&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=22270&r=support
Expected behavior: http://bugs.php.net/fix.php?id=22270&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=22270&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=22270&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=22270&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=22270&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=22270&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=22270&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=22270&r=gnused
