CVE-2016-5427 Information

Description

PowerDNS (aka pdns) Authoritative Server before 3.4.10 does not properly handle a . (dot) inside labels which allows remote attackers to cause a denial of service (backend CPU consumption) via a crafted DNS query.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

http://www.debian.org/security/2016/dsa-3664 http://www.openwall.com/lists/oss-security/2016/09/09/3 http://www.securityfocus.com/bid/92917 http://www.securitytracker.com/id/1036761 https://doc.powerdns.com/md/security/powerdns-advisory-2016-01/ https://github.com/PowerDNS/pdns/commit/881b5b03a590198d03008e4200dd00cc537712f3

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5