SUSE SLED15 / SLES15 Security Update : unbound (SUSE-SU-2020:1772-1)

high Nessus Plugin ID 138302

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New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

The remote SUSE host is missing one or more security updates.

Description

This update for unbound fixes the following issues :

CVE-2020-12662: Fixed an issue where unbound could have been tricked into amplifying an incoming query into a large number of queries directed to a target (bsc#1171889).

CVE-2020-12663: Fixed an issue where malformed answers from upstream name servers could have been used to make unbound unresponsive (bsc#1171889).

CVE-2019-18934: Fixed a vulnerability in the IPSec module which could have allowed code execution after receiving a special crafted answer (bsc#1157268).

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or 'zypper patch'.

Alternatively you can run the command listed for your product :

SUSE Linux Enterprise Module for Basesystem 15-SP2 :

zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP2-2020-1772=1

SUSE Linux Enterprise Module for Basesystem 15-SP1 :

zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP1-2020-1772=1

See Also

https://bugzilla.suse.com/show_bug.cgi?id=1157268

https://bugzilla.suse.com/show_bug.cgi?id=1171889

https://www.suse.com/security/cve/CVE-2019-18934/

https://www.suse.com/security/cve/CVE-2020-12662/

https://www.suse.com/security/cve/CVE-2020-12663/

http://www.nessus.org/u?f17f69d7

Plugin Details

Severity: High

ID: 138302

File Name: suse_SU-2020-1772-1.nasl

Version: 1.2

Type: local

Agent: unix

Published: 7/9/2020

Updated: 7/14/2020

Dependencies: ssh_get_info.nasl

Risk Information

CVSS Score Source: CVE-2019-18934

VPR

Risk Factor: Medium

Score: 5.1

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

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

CVSS v3

Risk Factor: High

Base Score: 7.3

Temporal Score: 6.4

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

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

Vulnerability Information

CPE: cpe:2.3:o:novell:suse_linux:15:*:*:*:*:*:*:*, p-cpe:2.3:a:novell:suse_linux:libunbound2:*:*:*:*:*:*:*, p-cpe:2.3:a:novell:suse_linux:libunbound2-debuginfo:*:*:*:*:*:*:*, p-cpe:2.3:a:novell:suse_linux:unbound-anchor:*:*:*:*:*:*:*, p-cpe:2.3:a:novell:suse_linux:unbound-anchor-debuginfo:*:*:*:*:*:*:*, p-cpe:2.3:a:novell:suse_linux:unbound-debuginfo:*:*:*:*:*:*:*, p-cpe:2.3:a:novell:suse_linux:unbound-debugsource:*:*:*:*:*:*:*, p-cpe:2.3:a:novell:suse_linux:unbound-devel:*:*:*:*:*:*:*

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

Exploit Ease: No known exploits are available

Patch Publication Date: 6/26/2020

Vulnerability Publication Date: 11/19/2019

Reference Information

CVE: CVE-2019-18934, CVE-2020-12662, CVE-2020-12663