Unbound < 1.6.8 Wildcard Synthesized NSEC Records Handling Remote Validation Weakness

medium Nessus Plugin ID 106384

Synopsis

The remote name server is affected by a remote validation weakness.

Description

According to its self-reported version number, the remote Unbound DNS resolver is affected by a validation weakness when handling wildcard synthesized NSEC records.

Solution

Upgrade to Unbound version 1.6.8 or later.

See Also

https://unbound.net/downloads/CVE-2017-15105.txt

https://seclists.org/oss-sec/2018/q1/75

Plugin Details

Severity: Medium

ID: 106384

File Name: unbound_1_6_8.nasl

Version: 1.5

Type: remote

Family: DNS

Published: 1/26/2018

Updated: 11/8/2019

Configuration: Enable paranoid mode

Risk Information

CVSS Score Source: CVE-2017-15105

VPR

Risk Factor: Low

Score: 1.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

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

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:unbound:unbound

Required KB Items: Settings/ParanoidReport, unbound/version

Exploit Ease: No known exploits are available

Patch Publication Date: 1/19/2018

Vulnerability Publication Date: 1/19/2018

Reference Information

CVE: CVE-2017-15105