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Bug #9383 mcrypt 2.4.9 function causes Apache to segfault
Submitted: 2001-02-21 16:10 UTC Modified: 2001-03-05 01:10 UTC
From: juraj at bednar dot sk Assigned:
Status: Closed Package: mcrypt related
PHP Version: 4.0.4pl1 OS: FreeBSD 4.2-STABLE (3 days old b
Private report: No CVE-ID: None
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From: juraj at bednar dot sk
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 [2001-02-21 16:10 UTC] juraj at bednar dot sk 
The problem appears on freebsd. Everything compiled from ports.
apache version is 1.3.17. PHP is 4.0.4pl1. Mcrypt is 2.4.9 with and without --disable-posix-threads tested, does the same thing (but I don't think, that ./configure recognizes this in 2.4.x of mcrypt). Everything works just fine, until I run mcrypt_modle_open function.

#0  0x0 in ?? ()
#1  0x2842fa4a in mcrypt_enc_is_block_algorithm_mode () from /usr/local/lib/libmcrypt.so.5
#2  0x2842f4a9 in mcrypt_module_open () from /usr/local/lib/libmcrypt.so.5
#3  0x28334b87 in php_if_mcrypt_module_open (ht=4, return_value=0x827d20c, this_ptr=0x0,
    return_value_used=1) at mcrypt.c:417
#4  0x2830fa09 in execute (op_array=0x828360c) at ./zend_execute.c:1519
#5  0x2830fc5c in execute (op_array=0x828380c) at ./zend_execute.c:1559
#6  0x2830fc5c in execute (op_array=0x828390c) at ./zend_execute.c:1559
#7  0x2830fc5c in execute (op_array=0x8283a0c) at ./zend_execute.c:1559
#8  0x2830fc5c in execute (op_array=0x825fc0c) at ./zend_execute.c:1559
#9  0x2831dc4e in zend_execute_scripts (type=8, file_count=3) at zend.c:729
#10 0x2832f0e4 in php_execute_script (primary_file=0xbfbff958) at main.c:1221
#11 0x2832b9e2 in apache_php_module_main (r=0x8269038, display_source_mode=0) at sapi_apache.c:89
#12 0x2832c382 in send_php (r=0x8269038, display_source_mode=0, filename=0x0) at mod_php4.c:516
#13 0x2832c3be in send_parsed_php (r=0x8269038) at mod_php4.c:527
#14 0x80536f8 in ap_invoke_handler ()
#15 0x80626b1 in process_request_internal ()
#16 0x8062710 in ap_process_request ()
#17 0x805c012 in child_main ()
#18 0x805c1a4 in make_child ()
#19 0x805c2c1 in startup_children ()
#20 0x805c790 in standalone_main ()
#21 0x805ce4b in main ()
#22 0x804fbf1 in _start ()

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 [2001-02-21 16:16 UTC] derick@php.net 
Can you check out if libmcrypt 2.4.4 or 2.4.7 works fine for you? Assigning it to me too.
 [2001-02-21 16:26 UTC] juraj at bednar dot sk 
no problem. I'm just compiling it with 2.4.8, should I try only 2.4.7. Is 2.4.8 known to have some problem?
 [2001-02-21 16:40 UTC] juraj at bednar dot sk 
Does not work with 2.4.8, trying 2.4.7
 [2001-02-21 16:51 UTC] juraj at bednar dot sk 
2.4.7 does not work too.
 [2001-02-21 18:09 UTC] derick@php.net 
After some research, it might be a portabilty issue, as this same configuration works flawlessly on linux (RedHAt 6.2)
I'll contact the author of libmcrypt
 [2001-02-26 18:10 UTC] juraj at bednar dot sk 
OK, I've done some research. This code fails to run (segfaults with the same symptoms as PHP):

#include<mcrypt.h>

main() {    mcrypt_module_open("tripledes","/usr/local/lib/libmcrypt/algorithms","ecb","/usr/local/lib/libmcrypt/modes");
}

Anyway, what's interesting -> I have the module tripledes installed correctly (even in that directory). But even the bundled ciphertest program does not find any working algorithms under freebsd 4.2
 [2001-03-05 01:10 UTC] sniper@php.net 
As this is clearly a bug in libmcrypt itself -> closed.

--Jani
 
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