RHEL 6 : unbound (RHSA-2020:2640)

high Nessus Plugin ID 137706

Synopsis

The remote Red Hat host is missing one or more security updates.

Description

The remote Redhat Enterprise Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:2640 advisory.

- unbound: amplification of an incoming query into a large number of queries directed to a target (CVE-2020-12662)

- unbound: infinite loop via malformed DNS answers received from upstream servers (CVE-2020-12663)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://access.redhat.com/security/cve/CVE-2020-12662

https://access.redhat.com/security/cve/CVE-2020-12663

https://access.redhat.com/errata/RHSA-2020:2640

https://bugzilla.redhat.com/1837597

https://bugzilla.redhat.com/1837604

Plugin Details

Severity: High

ID: 137706

File Name: redhat-RHSA-2020-2640.nasl

Version: 1.7

Type: local

Agent: unix

Published: 6/22/2020

Updated: 1/23/2023

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2020-12663

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:6, cpe:/o:redhat:rhel_els:6, cpe:/o:redhat:rhel_eus:6.0, p-cpe:/a:redhat:enterprise_linux:unbound, p-cpe:/a:redhat:enterprise_linux:unbound-devel, p-cpe:/a:redhat:enterprise_linux:unbound-libs, p-cpe:/a:redhat:enterprise_linux:unbound-python

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 6/22/2020

Vulnerability Publication Date: 5/19/2020

Reference Information

CVE: CVE-2020-12662, CVE-2020-12663

CWE: 20, 400, 406, 835

RHSA: 2020:2640