From: michaelw at webcentral dot com dot au
Operating system: Solaris 9 /
PHP version: 4.4.2
PHP Bug Type: Reproducible crash
Bug description: error_log with invalid arguments crashes PHP
Description:
------------
This was noticed by a developer making a typo ( , instead of . ) when
attempting to concat strings within the parameters of error_log. It is
reported as a bug because it causes a segfault in PHP which causes the
webserver to crash.
Reproduce code:
---------------
<html>
<body>
<?php
error_log("commas can crash ",($_SERVER['HTTPS'] != 'off'));
?>
<p>
Test..</p>
</body>
</html>
Expected result:
----------------
Presumably an error indicating that the 2nd parameter passed to error_log
is invalid.
Actual result:
--------------
Program received signal SIGSEGV, Segmentation fault.
(gdb) bt
#0 0xfedb451c in strlen () from /usr/lib/libc.so.1
#1 0xfee06f88 in _doprnt () from /usr/lib/libc.so.1
#2 0xfee089e4 in fprintf () from /usr/lib/libc.so.1
#3 0x000d0970 in php_mail (to=0x0, subject=0x193868 "To: %s\n",
message=0x0, headers=0x0, extra_cmd=0x0,
tsrm_ls=0x0) at /opt/admin/build/php-4.4.2/ext/standard/mail.c:228
Presumably the variable should be sanity checked both in php_mail and the
error_log function..
--
Edit bug report at http://bugs.php.net/?id=36928&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=36928&r=trysnapshot44
Try a CVS snapshot (PHP 5.1):
http://bugs.php.net/fix.php?id=36928&r=trysnapshot51
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=36928&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=36928&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=36928&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=36928&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=36928&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=36928&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=36928&r=support
Expected behavior: http://bugs.php.net/fix.php?id=36928&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=36928&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=36928&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=36928&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=36928&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=36928&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=36928&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=36928&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=36928&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=36928&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=36928&r=mysqlcfg
