Gentoo: GLSA-202012-18: PowerDNS: information disclosure

Date 23 Dec 2020

Category Gentoo Linux Distribution - Security Advisories

237

Posted By LinuxSecurity Advisories

An information disclosure vulnerability in PowerDNS allow remote attackers to obtain sensitive information.

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Gentoo Linux Security Advisory                           GLSA 202012-18
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                                            https://security.gentoo.org/
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  Severity: Low
     Title: PowerDNS: information disclosure
      Date: December 23, 2020
      Bugs: #744160
        ID: 202012-18

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Synopsis
========

An information disclosure vulnerability in PowerDNS allow remote
attackers to obtain sensitive information.

Background
==========

The PowerDNS nameserver is an authoritative-only nameserver which uses
a flexible backend architecture.

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

     -------------------------------------------------------------------
      Package              /     Vulnerable     /            Unaffected
     -------------------------------------------------------------------
   1  net-dns/pdns                 < 4.3.1                    >= 4.3.1

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

It was discovered that PowerDNS did not properly handle certain unknown
records.

Impact
======

An authorized attacker with the ability to insert crafted records into
a zone might be able to leak the content of uninitialized memory.
Crafted records cannot be inserted via AXFR.

Workaround
==========

Do not take zone data from untrusted users.

Resolution
==========

All PowerDNS users should upgrade to the latest version:

   # emerge --sync
   # emerge --ask --oneshot --verbose ">=net-dns/pdns-4.3.1"

References
==========

[ 1 ] CVE-2020-17482
       https://nvd.nist.gov/vuln/detail/CVE-2020-17482
[ 2 ] PowerDNS Security Advisory 2020-05
 
https://docs.powerdns.com/authoritative/security-advisories/powerdns-advisory-2020-05.html

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

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

  https://security.gentoo.org/glsa/202012-18

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
This email address is being protected from spambots. You need JavaScript enabled to view it. 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