Edit report at https://bugs.php.net/bug.php?id=79979&edit=1
ID: 79979
User updated by: 1126774947 at qq dot com
Reported by: 1126774947 at qq dot com
-Summary: stream_socket_client be called by
call_user_func_array with wrong param and cau
+Summary: exec function execute code and cause crash with
call_user_func_array
Status: Open
Type: Bug
Package: Reproducible crash
Operating System: ubuntu 16.04
PHP Version: 8.0.0beta1
Block user comment: N
Private report: N
New Comment:
Wrong bug title
Previous Comments:
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[2020-08-16 02:56:40] 1126774947 at qq dot com
Description:
------------
exec be called in call_user_function_array wrong param will cause segment fault but still exec code
backtrace
#0 php_exec_ex (execute_data=0x7ffff3e150f0, return_value=0x7ffff3e15070, mode=0) at
/tmp/tmp/php-src/ext/standard/exec.c:214
#1 0x00000000006cf3d5 in zif_exec (execute_data=0x7ffff3e150f0, return_value=0x7ffff3e15070) at
/tmp/tmp/php-src/ext/standard/exec.c:263
#2 0x00000000008afcb4 in ZEND_DO_FCALL_SPEC_RETVAL_USED_HANDLER () at
/tmp/tmp/php-src/Zend/zend_vm_execute.h:1730
#3 0x0000000000914c75 in execute_ex (ex=0x7ffff3e15020) at
/tmp/tmp/php-src/Zend/zend_vm_execute.h:53828
#4 0x0000000000918d53 in zend_execute (op_array=0x7ffff3e03100, return_value=0x0) at
/tmp/tmp/php-src/Zend/zend_vm_execute.h:57920
#5 0x000000000083be3c in zend_execute_scripts (type=8, retval=0x0, file_count=3) at
/tmp/tmp/php-src/Zend/zend.c:1678
#6 0x000000000079cc72 in php_execute_script (primary_file=0x7fffffffca30) at
/tmp/tmp/php-src/main/main.c:2621
#7 0x000000000092500a in php_cli_server_dispatch_script (server=0x141c320 <server>,
client=0x156a5e0) at /tmp/tmp/php-src/sapi/cli/php_cli_server.c:2077
#8 0x0000000000925819 in php_cli_server_dispatch (server=0x141c320 <server>,
client=0x156a5e0) at /tmp/tmp/php-src/sapi/cli/php_cli_server.c:2248
#9 0x00000000009261cc in php_cli_server_recv_event_read_request (server=0x141c320 <server>,
client=0x156a5e0) at /tmp/tmp/php-src/sapi/cli/php_cli_server.c:2492
#10 0x00000000009265b1 in php_cli_server_do_event_for_each_fd_callback (_params=0x7fffffffcc90,
fd=4, event=1) at /tmp/tmp/php-src/sapi/cli/php_cli_server.c:2578
#11 0x0000000000922138 in php_cli_server_poller_iter_on_active (poller=0x141c328 <server+8>,
opaque=0x7fffffffcc90, callback=0x92635b <php_cli_server_do_event_for_each_fd_callback>) at
/tmp/tmp/php-src/sapi/cli/php_cli_server.c:919
#12 0x0000000000926647 in php_cli_server_do_event_for_each_fd (server=0x141c320 <server>,
rhandler=0x926064 <php_cli_server_recv_event_read_request>, whandler=0x926207
<php_cli_server_send_event>) at /tmp/tmp/php-src/sapi/cli/php_cli_server.c:2596
#13 0x00000000009266cf in php_cli_server_do_event_loop (server=0x141c320 <server>) at
/tmp/tmp/php-src/sapi/cli/php_cli_server.c:2606
#14 0x0000000000926a7b in do_cli_server (argc=3, argv=0x1437cd0) at
/tmp/tmp/php-src/sapi/cli/php_cli_server.c:2734
#15 0x000000000091ca7d in main (argc=3, argv=0x1437cd0) at /tmp/tmp/php-src/sapi/cli/php_cli.c:1362
after execute the code
php: /tmp/tmp/php-src/ext/standard/exec.c:254: php_exec_ex: Assertion
`(zval_get_type(&(*(ret_code))) == 10)' failed.
#0 0x00007ffff6a82428 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:54
#1 0x00007ffff6a8402a in __GI_abort () at abort.c:89
#2 0x00007ffff6a7abd7 in __assert_fail_base (fmt=<optimized out>,
assertion=assertion@entry=0xf965a0 "(zval_get_type(&(*(ret_code))) == 10)",
file=file@entry=0xf964e0 "/tmp/tmp/php-src/ext/standard/exec.c", line=line@entry=254,
function=function@entry=0xf96928 <__PRETTY_FUNCTION__.17203> "php_exec_ex") at
assert.c:92
#3 0x00007ffff6a7ac82 in __GI___assert_fail (assertion=0xf965a0
"(zval_get_type(&(*(ret_code))) == 10)", file=0xf964e0
"/tmp/tmp/php-src/ext/standard/exec.c", line=254, function=0xf96928
<__PRETTY_FUNCTION__.17203> "php_exec_ex") at assert.c:101
#4 0x00000000006cf316 in php_exec_ex (execute_data=0x7ffff3e150f0, return_value=0x7ffff3e15070,
mode=0) at /tmp/tmp/php-src/ext/standard/exec.c:254
#5 0x00000000006cf3d5 in zif_exec (execute_data=0x7ffff3e150f0, return_value=0x7ffff3e15070) at
/tmp/tmp/php-src/ext/standard/exec.c:263
#6 0x00000000008afcb4 in ZEND_DO_FCALL_SPEC_RETVAL_USED_HANDLER () at
/tmp/tmp/php-src/Zend/zend_vm_execute.h:1730
#7 0x0000000000914c75 in execute_ex (ex=0x7ffff3e15020) at
/tmp/tmp/php-src/Zend/zend_vm_execute.h:53828
#8 0x0000000000918d53 in zend_execute (op_array=0x7ffff3e03100, return_value=0x0) at
/tmp/tmp/php-src/Zend/zend_vm_execute.h:57920
#9 0x000000000083be3c in zend_execute_scripts (type=8, retval=0x0, file_count=3) at
/tmp/tmp/php-src/Zend/zend.c:1678
#10 0x000000000079cc72 in php_execute_script (primary_file=0x7fffffffca30) at
/tmp/tmp/php-src/main/main.c:2621
#11 0x000000000092500a in php_cli_server_dispatch_script (server=0x141c320 <server>,
client=0x156a5e0) at /tmp/tmp/php-src/sapi/cli/php_cli_server.c:2077
#12 0x0000000000925819 in php_cli_server_dispatch (server=0x141c320 <server>,
client=0x156a5e0) at /tmp/tmp/php-src/sapi/cli/php_cli_server.c:2248
#13 0x00000000009261cc in php_cli_server_recv_event_read_request (server=0x141c320 <server>,
client=0x156a5e0) at /tmp/tmp/php-src/sapi/cli/php_cli_server.c:2492
#14 0x00000000009265b1 in php_cli_server_do_event_for_each_fd_callback (_params=0x7fffffffcc90,
fd=4, event=1) at /tmp/tmp/php-src/sapi/cli/php_cli_server.c:2578
#15 0x0000000000922138 in php_cli_server_poller_iter_on_active (poller=0x141c328 <server+8>,
opaque=0x7fffffffcc90, callback=0x92635b <php_cli_server_do_event_for_each_fd_callback>) at
/tmp/tmp/php-src/sapi/cli/php_cli_server.c:919
#16 0x0000000000926647 in php_cli_server_do_event_for_each_fd (server=0x141c320 <server>,
rhandler=0x926064 <php_cli_server_recv_event_read_request>, whandler=0x926207
<php_cli_server_send_event>) at /tmp/tmp/php-src/sapi/cli/php_cli_server.c:2596
#17 0x00000000009266cf in php_cli_server_do_event_loop (server=0x141c320 <server>) at
/tmp/tmp/php-src/sapi/cli/php_cli_server.c:2606
#18 0x0000000000926a7b in do_cli_server (argc=3, argv=0x1437cd0) at
/tmp/tmp/php-src/sapi/cli/php_cli_server.c:2734
#19 0x000000000091ca7d in main (argc=3, argv=0x1437cd0) at /tmp/tmp/php-src/sapi/cli/php_cli.c:1362
Test script:
---------------
<?php
call_user_func_array("exec",["echo '<?php phpinfo();?>' >
bbb.php","??????","????"]);
Expected result:
----------------
PHP Warning: Parameter 2 to exec() expected to be a reference, value given in php shell code on
line 1
Warning: Parameter 2 to exec() expected to be a reference, value given in php shell code on line 1
PHP Warning: Parameter 3 to exec() expected to be a reference, value given in php shell code on
line 1
Warning: Parameter 3 to exec() expected to be a reference, value given in php shell code on line 1
Actual result:
--------------
Warning: Parameter 2 to exec() expected to be a reference, value given in php shell code on line 1
Warning: Parameter 3 to exec() expected to be a reference, value given in php shell code on line 1
Segmentation fault (core dumped)
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Edit this bug report at https://bugs.php.net/bug.php?id=79979&edit=1