FAQ
ID: 21989
User updated by: cw@f00f.org
Reported By: cw@f00f.org
-Status: Feedback
+Status: Open
Bug Type: OpenSSL related
Operating System: Linux x86 (2.4.x, glibc 2.3)
PHP Version: 4.3.0
Assigned To: iliaa
New Comment:

the test/demo code from
http://php.planetmirror.com/manual/en/function.openssl-csr-new.php
suffices to trigger this:

$dn = array(
"countryName" => "UK",
"stateOrProvinceName" => "Somerset",
"localityName" => "Glastonbury",
"organizationName" => "The Brain Room Limited",
"organizationalUnitName" => "PHP Documentation Team",
"commonName" => "Wez Furlong",
"emailAddress" => "wez@php.net"
);

// Generate a new private (and public) key pair
$privkey = openssl_pkey_new();

// Generate a certificate signing request
$csr = openssl_csr_new($dn, $privkey); // kaboom


Previous Comments:
------------------------------------------------------------------------

[2003-02-03 15:29:12] iliaa@php.net

What parameters are you passing to the function, but first try to see
if the problem persists in the latest snapshot of PHP.

------------------------------------------------------------------------

[2003-01-31 13:58:34] cw@f00f.org

When php 4.3.0 is compiled as loaded as an apache module (apache 1.3.27
from Debian Linux) accessing the function openssl_csr_new causes apache
to segfault.

Building php as a CGI this apparently does not happen (but I've not
investigated this all that closely).

Attaching to the apache process (where modphp has been build with
symbols) shows the actual segfault occurs inside php_openssl_make_REQ
(no stack trace available as I guess something get's clobbered and
messes this up).

Placing a breakpoint at php_openssl_make_REQ I see it is entered with a
stack of:

Breakpoint 2, php_openssl_make_REQ (req=0xbfffcf24, csr=0x8116c70,
dn=0x8117e1c, attribs=0x0)
at /home/cw/wk/zaphod/php4/php4-4.3.0/ext/openssl/openssl.c:1143
1143 STACK_OF(CONF_VALUE) * dn_sk, *attr_sk = NULL;
(gdb) bt
#0 php_openssl_make_REQ (req=0xbfffcf24, csr=0x8116c70, dn=0x8117e1c,
attribs=0x0)
at /home/cw/wk/zaphod/php4/php4-4.3.0/ext/openssl/openssl.c:1143
#1 0x403a8429 in zif_openssl_csr_new (ht=2, return_value=0x81163ec,
this_ptr=0x0, return_value_used=1)
at /home/cw/wk/zaphod/php4/php4-4.3.0/ext/openssl/openssl.c:1583
#2 0x404adf62 in execute (op_array=0x811333c) at
/home/cw/wk/zaphod/php4/php4-4.3.0/Zend/zend_execute.c:1596
#3 0x4049af24 in zend_execute_scripts (type=8, retval=0x0,
file_count=3) at /home/cw/wk/zaphod/php4/php4-4.3.0/Zend/zend.c:864
#4 0x4045fd53 in php_execute_script (primary_file=0xbffff764) at
/home/cw/wk/zaphod/php4/php4-4.3.0/main/main.c:1573
#5 0x404b3470 in apache_php_module_main (r=0x8109564,
display_source_mode=0) at
/home/cw/wk/zaphod/php4/php4-4.3.0/sapi/apache/sapi_apache.c:55
#6 0x404b4410 in send_php (r=0x8109564, display_source_mode=0,
filename=0x810b0dc "/var/www/other.php")
at /home/cw/wk/zaphod/php4/php4-4.3.0/sapi/apache/mod_php4.c:556
#7 0x404b448f in send_parsed_php (r=0x8109564) at
/home/cw/wk/zaphod/php4/php4-4.3.0/sapi/apache/mod_php4.c:571
#8 0x08053b34 in ap_invoke_handler ()
#9 0x0806368c in ap_some_auth_required ()
#10 0x080636e8 in ap_process_request ()
#11 0x0805ce2b in ap_child_terminate ()
#12 0x0805cfbc in ap_child_terminate ()
#13 0x0805d0d9 in ap_child_terminate ()
#14 0x0805d5b5 in ap_child_terminate ()
#15 0x0805dcbd in main ()
#16 0x400e59f1 in __libc_start_main () from /lib/libc.so.6

and then dies at php4-4.3.0/ext/openssl/openssl.c line 1185 (the call
to X509_NAME_add_entry_by_NID):

Breakpoint 4, php_openssl_make_REQ (req=0xbfffcf24, csr=0x8116c70,
dn=0x8117e1c, attribs=0x0)
at /home/cw/wk/zaphod/php4/php4-4.3.0/ext/openssl/openssl.c:1185
1185 if
(!X509_NAME_add_entry_by_NID(subj, nid, MBSTRING_ASC,
(gdb) n

Program received signal SIGSEGV, Segmentation fault.
0x402c6f8b in sk_value () from /usr/lib/i686/cmov/libcrypto.so.0.9.6
(gdb)


I don't know enough about this call, php or indeed anything to really
know what variables to poke and look at further.


------------------------------------------------------------------------


--
Edit this bug report at http://bugs.php.net/?id=21989&edit=1

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