PHP :: Bug #80203 :: imap_mime_header_decode() is not binary safe

Bug #80203

imap_mime_header_decode() is not binary safe

Submitted:

2020-10-08 12:00 UTC

Modified:

2020-10-19 15:52 UTC

Votes:	2
Avg. Score:	4.5 ± 0.5
Reproduced:	2 of 2 (100.0%)
Same Version:	2 (100.0%)
Same OS:	2 (100.0%)

From:

cmb@php.net

Assigned:

Status:

Open

Package:

IMAP related

PHP Version:

7.3Git-2020-10-08 (Git)

OS:

Private report:

CVE-ID:

None

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New/Additional Comment:

[2020-10-08 12:00 UTC] cmb@php.net

Description:
------------
If NUL bytes are encoded in the encoded-word, the decoded text
is truncated at that position.

Test script:
---------------
<?php
var_dump(bin2hex(imap_mime_header_decode("=?UTF-8?Q?foo=00bar?=")[0]->text));
var_dump(bin2hex(imap_mime_header_decode("=?UTF-8?B?Zm9vAGJhcg==?=")[0]->text));
?>


Expected result:
----------------
string(14) "666f6f00626172"
string(14) "666f6f00626172"


Actual result:
--------------
string(6) "666f6f"
string(6) "666f6f"

Patches

Pull Requests

Pull requests:

Fix #80203: imap_mime_header_decode() is not binary safe (php-src/6301)

History

AllCommentsChangesGit/SVN commitsRelated reports

[2020-10-08 12:00 UTC] cmb@php.net

-Assigned To: +Assigned To: cmb

[2020-10-08 12:19 UTC] cmb@php.net

The following pull request has been associated:

Patch Name: Fix #80203: imap_mime_header_decode() is not binary safe
On GitHub:  https://github.com/php/php-src/pull/6301
Patch:      https://github.com/php/php-src/pull/6301.patch

[2020-10-19 08:09 UTC] cmb@php.net

Related To: Bug #80201

[2020-10-19 15:52 UTC] cmb@php.net

-Status: Assigned +Status: Open -Assigned To: cmb +Assigned To:

[2020-10-19 15:52 UTC] cmb@php.net

It appears there are several more places where the IMAP extension
is not binary safe.  Fixing this piecemeal doesn't look right, but
I won't have time for a full review now.

[2023-05-31 17:41 UTC] stevesmith22 at aol dot com

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