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Gentoo Linux Security Advisory                           GLSA 202006-12
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                                           https://security.gentoo.org/
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 Severity: High
    Title: GNU Mailutils: Privilege escalation
     Date: June 13, 2020
     Bugs: #700806
       ID: 202006-12

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Synopsis
========

A vulnerability has been found in GNU Mailutils allowing privilege
escalation.

Background
==========

The GNU Mailutils are a collection of mail-related utilities, including
an IMAP4 server (imap4d).

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

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  net-mail/mailutils            < 3.8                       >= 3.8 

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

GNU Mailutils runs maidag by default with setuid root permissions.

Impact
======

An attacker can use this to write to arbitrary files as root.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All GNU Mailutils users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=net-mail/mailutils-3.8"

References
==========

[ 1 ] CVE-2019-18862
      https://nvd.nist.gov/vuln/detail/CVE-2019-18862

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

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

 https://security.gentoo.org/glsa/202006-12

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 2020 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