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Bug #80751 Comma in recipient name breaks email delivery
Submitted: 2021-02-14 15:10 UTC Modified: 2021-02-15 09:34 UTC
Votes:1
Avg. Score:3.0 ± 0.0
Reproduced:1 of 1 (100.0%)
Same Version:1 (100.0%)
Same OS:1 (100.0%)
From: camaro396 at yandex dot ru Assigned: cmb (profile)
Status: Closed Package: Mail related
PHP Version: 7.4.15 OS: Windows Server 2012 R2
Private report: No CVE-ID: None
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From: camaro396 at yandex dot ru
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 [2021-02-14 15:10 UTC] camaro396 at yandex dot ru 
Description:
------------
Comma in recipient name leads to a malformed SMTP FROM command.

Test script:
---------------
mail('"Lastname, firstname" <lastname_firstname@example.com>', 'TEST', 'TEST', 'From: "Test" <test@example.com>');

Expected result:
----------------
Message sent successfully

Actual result:
--------------
Message not sent.
SMTP transcript looks like this

"SMTPD"	55224	293364	"2021-02-04 05:34:12.678"	"xx.xx.xx.xx"	"SENT: 220 mx.example.com"
"SMTPD"	56232	293364	"2021-02-04 05:34:12.678"	"xx.xx.xx.xx"	"RECEIVED: HELO HOSTNAME"
"SMTPD"	56232	293364	"2021-02-04 05:34:12.678"	"xx.xx.xx.xx"	"SENT: 250 Hello."
"SMTPD"	55224	293364	"2021-02-04 05:34:12.678"	"xx.xx.xx.xx"	"RECEIVED: MAIL FROM:<sender@example.com>"
"SMTPD"	55224	293364	"2021-02-04 05:34:12.678"	"xx.xx.xx.xx"	"SENT: 250 OK"
"SMTPD"	55224	293364	"2021-02-04 05:34:12.678"	"xx.xx.xx.xx"	"RECEIVED: RCPT TO:<"Lastname>"
"SMTPD"	55224	293364	"2021-02-04 05:34:12.678"	"xx.xx.xx.xx"	"SENT: 550 A valid address is required."
"SMTPD"	55224	293364	"2021-02-04 05:34:12.678"	"xx.xx.xx.xx"	"RECEIVED: QUIT"
"SMTPD"	55224	293364	"2021-02-04 05:34:12.678"	"xx.xx.xx.xx"	"SENT: 221 goodbye"

Patches

Pull Requests

Pull requests:

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 [2021-02-14 21:19 UTC] requinix@php.net
-Status: Open +Status: Feedback
 [2021-02-14 21:19 UTC] requinix@php.net 
What is the remote mail server software? The transcript suggests that it isn't parsing "Lastname, firstname" correctly as a quoted string.
 [2021-02-15 09:34 UTC] cmb@php.net
-Status: Feedback +Status: Verified -Assigned To: +Assigned To: cmb
 [2021-02-15 09:34 UTC] cmb@php.net 
The problem is on our side.  SendText() splits the recipients on
comma[1], regardless of whether the comma is inside a quoted
string, or not.

[1] <https://github.com/php/php-src/blob/php-7.4.15/win32/sendmail.c#L412-L413>
 [2021-02-26 15:18 UTC] cmb@php.net 
The following pull request has been associated:

Patch Name: Fix #80751: Comma in recipient name breaks email delivery
On GitHub:  https://github.com/php/php-src/pull/6735
Patch:      https://github.com/php/php-src/pull/6735.patch
 [2021-03-01 17:51 UTC] cmb@php.net 
Automatic comment on behalf of cmbecker69@gmx.de
Revision: http://git.php.net/?p=php-src.git;a=commit;h=71297a254b8f0d97c028f3324cbaf95adf8de33c
Log: Fix #80751: Comma in recipient name breaks email delivery
 [2021-03-01 17:51 UTC] cmb@php.net
-Status: Verified +Status: Closed
 
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