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Bug #55646 decoding csr corrupts UTF8 characters
Submitted: 2011-09-08 17:57 UTC Modified: 2011-09-12 17:23 UTC
From: zedwoodnoreply at gmail dot com Assigned: cataphract (profile)
Status: Closed Package: OpenSSL related
PHP Version: 5.3.8 OS: Ubuntu 10.04
Private report: No CVE-ID: None
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 [2011-09-08 17:57 UTC] zedwoodnoreply at gmail dot com
Description:
------------
I did this in command line php,
OpenSSL 0.9.8k 25 Mar 2009

If I create a csr with a UTF8 character, then I ought to get the UTF8 character out, untampered with when I parse it.


Test script:
---------------
<?php
function stringAsHex($string){$unpacked = unpack("H*", $string);return implode(" ", str_split($unpacked[1],2));}

$config = array("digest_alg" => "sha1","x509_extensions" => "v3_ca","req_extensions" => "v3_req","private_key_bits" => 2048,"private_key_type" => OPENSSL_KEYTYPE_RSA,"encrypt_key" => false,);
$csr_info = array(
  "countryName" => "US",
  "stateOrProvinceName" => "Utah",
  "localityName" => "Lindon",
  "organizationName" => "Chinese",
  "organizationalUnitName" => "IT \xe4\xba\x92",
  "commonName" => "www.example.com",);
$private = openssl_pkey_new($config);
$csr_res = openssl_csr_new($csr_info, $private);
openssl_csr_export($csr_res, $csr); //echo $csr;
$output = openssl_csr_get_subject($csr);

echo "A: ".$csr_info["organizationalUnitName"]."\n";
echo "B: ".stringAsHex($csr_info["organizationalUnitName"])."\n";
echo "C: ".$output['OU']."\n";
echo "D: ".stringAsHex($output['OU'])."\n";

Expected result:
----------------
A: IT 互
B: 49 54 20 e4 ba 92
C: IT 互
D: 49 54 20 e4 ba 92


Actual result:
--------------
A: IT 互
B: 49 54 20 e4 ba 92
C: IT 互
D: 49 54 20 c3 a4 c2 ba c2 92


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 [2011-09-08 18:01 UTC] zedwoodnoreply at gmail dot com
I saved the csr that php generated... and the parsed it with:
openssl asn1parse -in a.csr
    0:d=0  hl=4 l= 687 cons: SEQUENCE          
    4:d=1  hl=4 l= 407 cons: SEQUENCE          
    8:d=2  hl=2 l=   1 prim: INTEGER           :00
   11:d=2  hl=2 l= 106 cons: SEQUENCE          
   13:d=3  hl=2 l=  11 cons: SET               
   15:d=4  hl=2 l=   9 cons: SEQUENCE          
   17:d=5  hl=2 l=   3 prim: OBJECT            :countryName
   22:d=5  hl=2 l=   2 prim: PRINTABLESTRING   :US
   26:d=3  hl=2 l=  13 cons: SET               
   28:d=4  hl=2 l=  11 cons: SEQUENCE          
   30:d=5  hl=2 l=   3 prim: OBJECT            :stateOrProvinceName
   35:d=5  hl=2 l=   4 prim: PRINTABLESTRING   :Utah
   41:d=3  hl=2 l=  15 cons: SET               
   43:d=4  hl=2 l=  13 cons: SEQUENCE          
   45:d=5  hl=2 l=   3 prim: OBJECT            :localityName
   50:d=5  hl=2 l=   6 prim: PRINTABLESTRING   :Lindon
   58:d=3  hl=2 l=  16 cons: SET               
   60:d=4  hl=2 l=  14 cons: SEQUENCE          
   62:d=5  hl=2 l=   3 prim: OBJECT            :organizationName
   67:d=5  hl=2 l=   7 prim: PRINTABLESTRING   :Chinese
   76:d=3  hl=2 l=  15 cons: SET               
   78:d=4  hl=2 l=  13 cons: SEQUENCE          
   80:d=5  hl=2 l=   3 prim: OBJECT            :organizationalUnitName
   85:d=5  hl=2 l=   6 prim: T61STRING         :IT 互
   93:d=3  hl=2 l=  24 cons: SET               
   95:d=4  hl=2 l=  22 cons: SEQUENCE          
   97:d=5  hl=2 l=   3 prim: OBJECT            :commonName
  102:d=5  hl=2 l=  15 prim: PRINTABLESTRING   :www.example.com
  119:d=2  hl=4 l= 290 cons: SEQUENCE          
  123:d=3  hl=2 l=  13 cons: SEQUENCE          
  125:d=4  hl=2 l=   9 prim: OBJECT            :rsaEncryption
  136:d=4  hl=2 l=   0 prim: NULL              
  138:d=3  hl=4 l= 271 prim: BIT STRING        
  413:d=2  hl=2 l=   0 cons: cont [ 0 ]        
  415:d=1  hl=2 l=  13 cons: SEQUENCE          
  417:d=2  hl=2 l=   9 prim: OBJECT            :md5WithRSAEncryption
  428:d=2  hl=2 l=   0 prim: NULL              
  430:d=1  hl=4 l= 257 prim: BIT STRING
 [2011-09-12 17:22 UTC] cataphract@php.net
Automatic comment from SVN on behalf of cataphract
Revision: http://svn.php.net/viewvc/?view=revision&amp;revision=316562
Log: - Fixed bug #55646: textual data is returned in UTF-8, but is input in
  another encoding. 5.4 only as this implies a BC break.
 [2011-09-12 17:23 UTC] cataphract@php.net
-Status: Open +Status: Closed -Assigned To: +Assigned To: cataphract
 [2011-09-12 17:23 UTC] cataphract@php.net
This bug has been fixed in SVN.

Snapshots of the sources are packaged every three hours; this change
will be in the next snapshot. You can grab the snapshot at
http://snaps.php.net/.

 For Windows:

http://windows.php.net/snapshots/
 
Thank you for the report, and for helping us make PHP better.

Fixed, but for 5.4 only due to backward compatibility concerns.

Thank you.
 [2011-09-12 20:04 UTC] cataphract@php.net
Automatic comment from SVN on behalf of cataphract
Revision: http://svn.php.net/viewvc/?view=revision&amp;revision=316568
Log: - Test for bug #55646.
 [2011-09-14 09:56 UTC] cataphract@php.net
Automatic comment from SVN on behalf of cataphract
Revision: http://svn.php.net/viewvc/?view=revision&amp;revision=316726
Log: - Fixed test ext/openssl/tests/004.phpt.
- Made ext/openssl/tests/bug55646.phpt more reproducible by giving it a custom
  openssl.cnf.
 [2012-04-18 09:48 UTC] laruence@php.net
Automatic comment on behalf of cataphract
Revision: http://git.php.net/?p=php-src.git;a=commit;h=1fbf9119050aee0867d0b276c3ed634e26c43b66
Log: - Fixed bug #55646: textual data is returned in UTF-8, but is input in   another encoding. 5.4 only as this implies a BC break.
 [2012-07-24 23:40 UTC] rasmus@php.net
Automatic comment on behalf of cataphract
Revision: http://git.php.net/?p=php-src.git;a=commit;h=1fbf9119050aee0867d0b276c3ed634e26c43b66
Log: - Fixed bug #55646: textual data is returned in UTF-8, but is input in   another encoding. 5.4 only as this implies a BC break.
 [2013-11-17 09:36 UTC] laruence@php.net
Automatic comment on behalf of cataphract
Revision: http://git.php.net/?p=php-src.git;a=commit;h=1fbf9119050aee0867d0b276c3ed634e26c43b66
Log: - Fixed bug #55646: textual data is returned in UTF-8, but is input in   another encoding. 5.4 only as this implies a BC break.
 
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