PT-2018-4974 · Powerdns+1 · Powerdns+3

Florian Heinz + 1 · Published 2017-01-13 · Updated 2024-06-15 · CVE-2016-7068

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions PowerDNS versions prior to 3.4.11 and 4.0.2 PowerDNS recursor versions prior to 3.7.4 and 4.0.4

Description The issue allows a remote, unauthenticated attacker to cause an abnormal CPU usage load on the PowerDNS server by sending crafted DNS queries. This could result in a partial denial of service if the system becomes overloaded. The problem is based on the fact that the PowerDNS server parses all records present in a query regardless of whether they are needed or even legitimate. A specially crafted query containing a large number of records can be used to take advantage of that behavior.

Recommendations For PowerDNS versions prior to 3.4.11 and 4.0.2, update to version 3.4.11 or 4.0.2 or later to resolve the issue. For PowerDNS recursor versions prior to 3.7.4 and 4.0.4, update to version 3.7.4 or 4.0.4 or later to resolve the issue. As a temporary workaround, consider restricting access to the PowerDNS server to minimize the risk of exploitation.

Fix

DoS

RCE

Resource Exhaustion

Weakness Enumeration

CWE-20

CWE-400

Related Identifiers

ALT-PU-2017-1425

CVE-2016-7068

DLA-788-1

DLA-798-1

DSA-3763-1

DSA-3764-1

MGASA-2017-0033

MGASA-2017-0036

OPENSUSE-SU-2024:11156-1

OPENSUSE-SU-2024:11157-1

Affected Products

Alt Linux

Powerdns

Powerdns Recursor

Powerdns Authoritative Server

References · 70

• https://osv.dev/vulnerability/openSUSE-SU-2024:11157-1 · Vendor Advisory
• https://errata.altlinux.org/ALT-PU-2017-1425 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5426 · Security Note
• https://security-tracker.debian.org/tracker/source-package/pdns · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2016-7068 · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-7068 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2017-0036 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2017-0033 · Vendor Advisory
• https://doc.powerdns.com/md/security/powerdns-advisory-2016-02 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:11156-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/DSA-3764-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2016-7068 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2016-7068 · Security Note
• https://debian.org/security/2017/dsa-3763 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7073 · Security Note