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Gentoo Linux Security Advisory                           GLSA 202305-03
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                                           https://security.gentoo.org/
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 Severity: Low
    Title: ProFTPd: Memory Disclosure
     Date: May 03, 2023
     Bugs: #811495
       ID: 202305-03

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Synopsis
========

A vulnerability has been discovered in ProFTPd which could result in
memory disclosure.

Background
==========

ProFTPD is an advanced and very configurable FTP server.

Affected packages
=================

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  net-ftp/proftpd            < 1.3.7c                    >= 1.3.7c

Description
===========

ProFTPd unconditionally sends passwords to Radius servers for
authentication in multiples of 16 bytes. If a password is not of a
length that is a multiple of 16 bytes, ProFTPd will read beyond the end
of the password string and send bytes beyond the end of the string
buffer.

Impact
======

Radius servers used for authentication can receive the contents of the
ProFTPd process' memory.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All ProFTPd users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=net-ftp/proftpd-1.3.7c"

References
==========

[ 1 ] CVE-2021-46854
      https://nvd.nist.gov/vuln/detail/CVE-2021-46854

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

 https://security.gentoo.org/glsa/202305-03

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======

Copyright 2023 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

https://creativecommons.org/licenses/by-sa/2.5