php
Segmentation fault when parsing multipart/mixed containing message/rfc822 with multipart/alternative
This script reproduces the issue:
<?php
$data = <<<'EOF'
Content-Type: multipart/mixed;
boundary="MCBoundary=_12210121514003461"
--MCBoundary=_12210121514003461
Content-Type: message/rfc822
Date: Wed, 12 Oct 2022 15:13:59 +0100
Content-Type: multipart/alternative;
boundary="MCBoundary=_12210121514003451"
--MCBoundary=_12210121514003451
Content-Type: text/plain
hello
--MCBoundary=_12210121514003451--
--MCBoundary=_12210121514003461--
EOF;
$resource = mailparse_msg_create();
mailparse_msg_parse($resource, $data);
echo 'OK!';
Running it on version 3.1.3 or 3.1.4 triggers a segmentation fault. it's fine on 3.1.2 however (it causes a Fatal Error because I reduced the example to an incorrect message but it doesn't segfault)
ps: it's different from https://github.com/php/pecl-mail-mailparse/issues/22 that is resolved 3.1.4, maybe it's the same issue as #22 but I'm not sure
We are also hitting this issue when processing email delivery reports, the email being processed has the following type.
Content-Description: Delivery report Content-Type: message/delivery-status
The message includes the original content with the type
Content-Description: Undelivered Message Content-Type: message/rfc822
The missing mime version is triggering the segmentation fault in our mail processor.
Example files for testing attached.
Built the extension from this commit and all our related skipped tests are now green again, thank you!