SUSE SLED15 / SLES15 Security Update : LibVNCServer (SUSE-SU-2020:1164-1)

critical Nessus Plugin ID 136395
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 LibVNCServer fixes the following issues :

CVE-2019-15690: Fixed a heap buffer overflow (bsc#1160471).

CVE-2019-15681: Fixed a memory leak which could have allowed to a remote attacker to read stack memory (bsc#1155419).

CVE-2019-20788: Fixed a integer overflow and heap-based buffer overflow via a large height or width value (bsc#1170441).

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 Workstation Extension 15-SP2 :

zypper in -t patch SUSE-SLE-Product-WE-15-SP2-2020-1164=1

SUSE Linux Enterprise Workstation Extension 15-SP1 :

zypper in -t patch SUSE-SLE-Product-WE-15-SP1-2020-1164=1

SUSE Linux Enterprise Module for Packagehub Subpackages 15-SP2 :

zypper in -t patch SUSE-SLE-Module-Packagehub-Subpackages-15-SP2-2020-1164=1

SUSE Linux Enterprise Module for Open Buildservice Development Tools 15-SP2 :

zypper in -t patch SUSE-SLE-Module-Development-Tools-OBS-15-SP2-2020-1164=1

SUSE Linux Enterprise Module for Open Buildservice Development Tools 15-SP1 :

zypper in -t patch SUSE-SLE-Module-Development-Tools-OBS-15-SP1-2020-1164=1

See Also

https://bugzilla.suse.com/show_bug.cgi?id=1155419

https://bugzilla.suse.com/show_bug.cgi?id=1160471

https://bugzilla.suse.com/show_bug.cgi?id=1170441

https://www.suse.com/security/cve/CVE-2019-15681/

https://www.suse.com/security/cve/CVE-2019-15690/

https://www.suse.com/security/cve/CVE-2019-20788/

http://www.nessus.org/u?d8bac317

Plugin Details

Severity: Critical

ID: 136395

File Name: suse_SU-2020-1164-1.nasl

Version: 1.5

Type: local

Agent: unix

Published: 5/7/2020

Updated: 1/13/2021

Dependencies: ssh_get_info.nasl

Risk Information

CVSS Score Source: CVE-2019-20788

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

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

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

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

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:LibVNCServer-debugsource, p-cpe:/a:novell:suse_linux:LibVNCServer-devel, p-cpe:/a:novell:suse_linux:libvncserver0, p-cpe:/a:novell:suse_linux:libvncserver0-debuginfo, cpe:/o:novell:suse_linux:15

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: 5/4/2020

Vulnerability Publication Date: 10/29/2019

Reference Information

CVE: CVE-2019-15681, CVE-2019-15690, CVE-2019-20788

IAVA: 2020-A-0381