Fedora 34 Security Advisory: php-phpmailer6 RCE Critical Fix

PHPMailer - A full-featured email creation and transfer class for PHP

Class Features

* Probably the world's most popular code for sending email from PHP!

* Used by many open-source projects:

WordPress, Drupal, 1CRM, SugarCRM, Yii, Joomla! and many more

* Integrated SMTP support - send without a local mail server

* Send emails with multiple To, CC, BCC and Reply-to addresses

* Multipart/alternative emails for mail clients that do not read HTML email

* Add attachments, including inline

* Support for UTF-8 content and 8bit, base64, binary, and quoted-printable

encodings

* SMTP authentication with LOGIN, PLAIN, CRAM-MD5 and XOAUTH2 mechanisms

over SSL and SMTP+STARTTLS transports

* Validates email addresses automatically

* Protect against header injection attacks

* Error messages in 47 languages!

* DKIM and S/MIME signing support

* Compatible with PHP 5.5 and later

* Namespaced to prevent name clashes

* Much more!

Autoloader: /usr/share/php/PHPMailer/PHPMailer6/autoload.php

**Version 6.5.0** (June 16th, 2021) * **SECURITY** Fixes **CVE-2021-34551**, a

complex RCE affecting Windows hosts. See SECURITY.md for details. * The fix for

this issue changes the way that language files are loaded. While they remain in

the same PHP-like format, they are processed as plain text, and any code in them

will not be run, including operations such as concatenation using the `.`

operator. * *Deprecation* The current translation file format using PHP arrays

is now deprecated; the next major version will introduce a new format. *

**SECURITY** Fixes **CVE-2021-3603** that may permit untrusted code to be run

from an address validator. See SECURITY.md for details. * The fix for this issue

includes a minor BC break: callables injected into `validateAddress`, or

indirectly through the `$validator` class property, may no longer be simple

strings. If you want to inject your own validator, provide a closure instead of

a function name. * Haraka message ID strings are now recognised

* Thu Jun 17 2021 Remi Collet - 6.5.0-1

- update to 6.5.0

[ 1 ] Bug #1973425 - CVE-2021-3603 php-PHPMailer: inclusion of functionality from untrusted control sphere vulnerability

https://bugzilla.redhat.com/show_bug.cgi?id=1973425

su -c 'dnf upgrade --advisory FEDORA-2021-bfc34b3d5c' at the command

line. For more information, refer to the dnf documentation available at

https://dnf.readthedocs.io/en/latest/command_ref.html

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