[ GLSA 202006-20 ] Asterisk: Root privilege escalation

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Gentoo Linux Security Advisory                           GLSA 202006-20
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                                           https://security.gentoo.org/
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 Severity: High
    Title: Asterisk: Root privilege escalation
     Date: June 15, 2020
     Bugs: #602722
       ID: 202006-20

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Synopsis
========

A vulnerability was discovered in Asterisk which may allow local
attackers to gain root privileges.

Background
==========

A Modular Open Source PBX System.

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

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  net-misc/asterisk          < 13.32.0-r1            >= 13.32.0-r1 

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

It was discovered that Gentoo’s Asterisk ebuild does not properly set
permissions on its data directories. This only affects OpenRC systems,
as the flaw was exploitable via the init script.

Impact
======

A local attacker could escalate privileges.

Workaround
==========

Users should ensure the proper permissions are set as discussed in the
referenced bugs. Do not run /etc/init.d/asterisk checkperms.

Resolution
==========

All Asterisk users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=net-misc/asterisk-13.32.0-r1"

References
==========


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

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

 https://security.gentoo.org/glsa/202006-20

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
[email protected] 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

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