SUSE SLED15 / SLES15 Security Update : LibVNCServer (SUSE-SU-2019:0080-1)

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SUSE SLED15 / SLES15 Security Update : LibVNCServer (SUSE-SU-2019:0080-1)

critical Nessus Plugin ID 121158

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 :

Security issues fixed :

CVE-2018-15126: Fixed use-after-free in file transfer extension (bsc#1120114)

CVE-2018-6307: Fixed use-after-free in file transfer extension server code (bsc#1120115)

CVE-2018-20020: Fixed heap out-of-bound write inside structure in VNC client code (bsc#1120116)

CVE-2018-15127: Fixed heap out-of-bounds write in rfbserver.c (bsc#1120117)

CVE-2018-20019: Fixed multiple heap out-of-bound writes in VNC client code (bsc#1120118)

CVE-2018-20023: Fixed information disclosure through improper initialization in VNC Repeater client code (bsc#1120119)

CVE-2018-20022: Fixed information disclosure through improper initialization in VNC client code (bsc#1120120)

CVE-2018-20024: Fixed NULL pointer dereference in VNC client code (bsc#1120121)

CVE-2018-20021: Fixed infinite loop in VNC client code (bsc#1120122)

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:zypper in -t patch SUSE-SLE-Product-WE-15-2019-80=1

SUSE Linux Enterprise Module for Packagehub Subpackages 15:zypper in
-t patch SUSE-SLE-Module-Packagehub-Subpackages-15-2019-80=1

SUSE Linux Enterprise Module for Open Buildservice Development Tools 15:zypper in -t patch SUSE-SLE-Module-Development-Tools-OBS-15-2019-80=1

Plugin Details

Severity: Critical

ID: 121158

File Name: suse_SU-2019-0080-1.nasl

Version: 1.5

Type: local

Agent: unix

Family: SuSE Local Security Checks

Published: 1/14/2019

Updated: 1/13/2021

Dependencies: ssh_get_info.nasl

Risk Information

CVSS Score Source: CVE-2018-20020

VPR

Risk Factor: Medium

Score: 6.7

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: 1/11/2019

Vulnerability Publication Date: 12/19/2018

Reference Information

CVE: CVE-2018-15126, CVE-2018-15127, CVE-2018-20019, CVE-2018-20020, CVE-2018-20021, CVE-2018-20022, CVE-2018-20023, CVE-2018-20024, CVE-2018-6307