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Fedora 33: Moderate Severity in PHP Mailer Remote Code Execution Alert

fedora
Calendar Grey June 25, 2021
Dist Fedora Esm H88
The latest PHP Mailer security update fixes critical RCE vulnerabilities, urging immediate action from developers. Fedora users must apply this update swiftly.
**Version 6.5.0** (June 16th, 2021) * **SECURITY** Fixes **CVE-2021-34551**, a complex RCE affecting Windows hosts

Summary

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-ef548cb234' at the command

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

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

All packages are signed with the Fedora Project GPG key. More details on the

GPG keys used by the Fedora Project can be found at

https://fedoraproject.org/security/

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Change Log

References

Update Instructions

Severity
important
Lowest
Low
Medium
High
Critical

Product: Fedora 33
Version: 6.5.0
Release: 1.fc33
Summary: Full-featured email creation and transfer class for PHP

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