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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
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
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