This is an OpenPGP/MIME signed message (RFC 4880 and 3156)
--===============1943104623679017155==
Content-Language: en-CA
Content-Type: multipart/signed; micalg=pgp-sha256;
 protocol="application/pgp-signature";
 boundary="------------B0k2JKIuR9nRcQ0k9Cc8WsS0"

This is an OpenPGP/MIME signed message (RFC 4880 and 3156)
--------------B0k2JKIuR9nRcQ0k9Cc8WsS0
Content-Type: multipart/mixed;
 boundary="------------R6mBIo11Csj1Co0bwtYn0fAb";
 protected-headers="v1"
From: Marc Deslauriers <marc.deslauriers@canonical.com>
Reply-To: Ubuntu Security <security@ubuntu.com>
To: "ubuntu-security-announce@lists.ubuntu.com"
 <ubuntu-security-announce@lists.ubuntu.com>
Message-ID: <222734cf-4bd8-35c8-f296-ce20e3d42a36@canonical.com>
Subject: [USN-6379-1] vsftpd vulnerability

--------------R6mBIo11Csj1Co0bwtYn0fAb
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: base64

==========================================================================
Ubuntu Security Notice USN-6379-1
September 18, 2023

vsftpd vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 20.04 LTS

Summary:

vsftpd could allow unintended access to network services.

Software Description:
- vsftpd: FTP server written for security

Details:

It was discovered that vsftpd was vulnerable to the ALPACA TLS protocol
content confusion attack. A remote attacker could possibly use this issue
to redirect traffic from one subdomain to another.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 20.04 LTS:
   vsftpd                          3.0.5-0ubuntu0.20.04.1

This update uses a new upstream release, which includes additional bug
fixes. In general, a standard system update will make all the necessary
changes.

References:
   https://ubuntu.com/security/notices/USN-6379-1
   CVE-2021-3618

Package Information:
   https://launchpad.net/ubuntu/+source/vsftpd/3.0.5-0ubuntu0.20.04.1

--------------R6mBIo11Csj1Co0bwtYn0fAb--

--------------B0k2JKIuR9nRcQ0k9Cc8WsS0
Content-Type: application/pgp-signature; name="OpenPGP_signature.asc"
Content-Description: OpenPGP digital signature
Content-Disposition: attachment; filename="OpenPGP_signature"

-----BEGIN PGP SIGNATURE-----
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=c21h
-----END PGP SIGNATURE-----

--------------B0k2JKIuR9nRcQ0k9Cc8WsS0--


--===============1943104623679017155==
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: base64
Content-Disposition: inline

Cg==

--===============1943104623679017155==--