Bug #72964 [PATCH]: White space not unfolded for CC/Bcc headers
Edit report at https://bugs.php.net/bug.php?id=72964&edit=1
ID: 72964
Patch added by: cmb@php.net
Reported by: hynek dot petrak at gmail dot com
Summary: White space not unfolded for CC/Bcc headers
Status: Verified
Type: Bug
Package: Mail related
Operating System: Windows
PHP Version: 5.6.25
Assigned To: cmb
Block user comment: N
Private report: N
New Comment:
The following pull request has been associated:
Patch Name: Fix #72964: White space not unfolded for CC/Bcc headers
On GitHub: https://github.com/php/php-src/pull/6420
Patch: https://github.com/php/php-src/pull/6420.patch
Previous Comments:
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[2016-08-29 12:40:55] hynek dot petrak at gmail dot com
Description:
------------
According to RFC2822 / 2.2.3. Long Header Fields, each header field can use White space folding.
E.g.:
To: xy@example.com\r\n
CC: ab@example.com,\r\n
cd@example.com\r\n
Subject: subject text
In the win32/sendmail.c SendText() function, the cc: and bcc: headers are considered only up to the
next \r\n, ignoring any additional folded lines. This occures on Windows when
"sendmail_path" is not defined in php.ini.
Problematic code:
pos1 = headers + (pos1 - headers_lc) + 3;
if (NULL == (pos2 = strstr(pos1, "\r\n"))) {
tempMailTo = estrndup(pos1, strlen(pos1));
} else {
tempMailTo = estrndup(pos1, pos2 - pos1);
}
IMHO any folding sequence "\r\n\t" or "\r\n " shall be replaced with
"\t" or " " in header_lc before scanning. Other solutions might be convenient
too.
Test script:
---------------
<?php
$to = 'nobody@example.com';
$subject = 'the subject';
$message = 'hello';
$headers = 'From: webmaster@example.com' . "\r\n" .
'Cc: cc1@example.com' . "\r\n" . ', ' .
'\tcc2@example.com' . "\r\n" .
'X-Mailer: PHP/' . phpversion();
mail($to, $subject, $message, $headers);
?>
Expected result:
----------------
cc2@example.com shall receive an email.
Actual result:
--------------
cc2@example.com does not receive an email. in the SMTP protocol RCPT TO: cc2@example.com is missing.
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Edit this bug report at https://bugs.php.net/bug.php?id=72964&edit=1
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