CVE-2017-15120 Information

Description

An issue has been found in the parsing of authoritative answers in PowerDNS Recursor before 4.0.8 leading to a NULL pointer dereference when parsing a specially crafted answer containing a CNAME of a different class than IN. An unauthenticated remote attacker could cause a denial of service.

CVSS Vector

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

Reference

http://seclists.org/oss-sec/2017/q4/382 http://www.securityfocus.com/bid/106335 https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-15120 https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2017-08.html https://www.debian.org/security/2017/dsa-4063

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