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Bug #77411 openssl_x509_parse serialNumber not always integer with OpenSSL version 1.1
Submitted: 2019-01-05 00:29 UTC Modified: 2021-01-19 14:22 UTC
Votes:7
Avg. Score:4.0 ± 0.8
Reproduced:7 of 7 (100.0%)
Same Version:3 (42.9%)
Same OS:0 (0.0%)
From: korikulum at net dot hr Assigned:
Status: Open Package: OpenSSL related
PHP Version: Irrelevant OS: Ubuntu 14.04
Private report: No CVE-ID: None
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 [2019-01-05 00:29 UTC] korikulum at net dot hr 
Description:
------------
With OpenSSL version 1.0 "openssl_x509_parse" would always return "serialNumber" as a string representation of an integer value, while "serialNumberHex" would be a string representation of a hexadecimal number.

This changes when using OpenSSL version 1.1. With OpenSSL version 1.1 the value of "serialNumber" is sometimes (not always) returned as a string representation of a hexadecimal number instead of an integer.

This is due to the following changes in OpenSSL: https://github.com/openssl/openssl/commit/10a3195fcf7d04ba519651cf12e945a8fe470a3c

Expected result:
----------------
  ["serialNumber"]=>
  string(39) "269913321572441498538983276629377170905"
  ["serialNumberHex"]=>
  string(32) "CB0F6A32FD527F6C0001000056603DD9"

Actual result:
--------------
  ["serialNumber"]=>
  string(34) "0xCB0F6A32FD527F6C0001000056603DD9"
  ["serialNumberHex"]=>
  string(32) "CB0F6A32FD527F6C0001000056603DD9"

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 [2021-01-19 14:22 UTC] cmb@php.net 
Given that the docs[1] state:

| The structure of the returned data is (deliberately) not yet
| documented, as it is still subject to change.

I wouldn't call that a bug, and it might be best to drop the
"serialNumber" altogether.

[1] <https://www.php.net/manual/en/function.openssl-x509-parse.php>
 
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