PowerDNS: information disclosure — GLSA 202012-18

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

Affected packages

net-dns/pdns on all architectures
Affected versions < 4.3.1
Unaffected versions >= 4.3.1

Background

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

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

Release date
December 23, 2020

Latest revision
December 23, 2020: 1

Severity
low

Exploitable
remote

Bugzilla entries