Unbound < 1.6.8 Wildcard Synthesized NSEC Records Handling Remote Validation Weakness

Medium Nessus Plugin ID 106384

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VPR Score: 1.4

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: 2018/01/26

Updated: 2019/11/08

Dependencies: 87872

Configuration: Enable paranoid mode

Risk Information

Risk Factor: Medium

VPR Score: 1.4

CVSS Score Source: CVE-2017-15105

CVSS v2.0

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

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: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:unbound:unbound

Required KB Items: Settings/ParanoidReport, unbound/version

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2018/01/19

Vulnerability Publication Date: 2018/01/19

Reference Information

CVE: CVE-2017-15105