CVE-2016-7069

MEDIUM

dnsdist < 1.2.0 - Denial of Service via EDNS0 OPT Record Parsing

Title source: llm
STIX 2.1

Description

An issue has been found in dnsdist before 1.2.0 in the way EDNS0 OPT records are handled when parsing responses from a backend. When dnsdist is configured to add EDNS Client Subnet to a query, the response may contain an EDNS0 OPT record that has to be removed before forwarding the response to the initial client. On a 32-bit system, the pointer arithmetic used when parsing the received response to remove that record might trigger an undefined behavior leading to a crash.

References (3)

Core 3
Core References
Issue Tracking, Third Party Advisory x_refsource_confirm
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-7069
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/100509

Scores

CVSS v3 5.9
EPSS 0.0458
EPSS Percentile 90.5%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-20
Status published
Products (1)
powerdns/dnsdist < 1.2.0
Published Sep 11, 2018
Tracked Since Feb 18, 2026