CVE-2017-3136

An error handling synthesized records could cause an assertion failure when using DNS64 with "break-dnssec yes;"

Medium · published January 16, 2019

CVSS v3.0

5.9

EPSS

11%

Percentile

95.9

In the wild

Unconfirmed

What it is

A query with a specific set of characteristics could cause a server using DNS64 to encounter an assertion failure and terminate. An attacker could deliberately construct a query, enabling denial-of-service against a server if it was configured to use the DNS64 feature and other preconditions were met. Affects BIND 9.8.0 -> 9.8.8-P1, 9.9.0 -> 9.9.9-P6, 9.9.10b1->9.9.10rc1, 9.10.0 -> 9.10.4-P6, 9.10.5b1->9.10.5rc1, 9.11.0 -> 9.11.0-P3, 9.11.1b1->9.11.1rc1, 9.9.3-S1 -> 9.9.9-S8.

The record

Technical detail

CVSS v3.0: 5.9 · MEDIUM
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0: Not supplied
EPSS: 0.11183 · 95.9th percentile
Published: 2019-01-16T20:00Z

EPSS history

Timeline

16 JAN 20:00Z
An error handling synthesized records could cause an assertion failure when using DNS64 with "break-dnssec yes;"
cvelistv5