SUSE SLES12 Security Update : tigervnc (SUSE-SU-2020:1749-1)

high Nessus Plugin ID 138296

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Synopsis

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

Description

This update for tigervnc fixes the following issues :

CVE-2019-15691: Fixed a use-after-return due to incorrect usage of stack memory in ZRLEDecoder (bsc#1159856).

CVE-2019-15692: Fixed a heap-based buffer overflow in CopyRectDecode (bsc#1160250).

CVE-2019-15693: Fixed a heap-based buffer overflow in TightDecoder::FilterGradient (bsc#1159858).

CVE-2019-15694: Fixed a heap-based buffer overflow, caused by improper error handling in processing MemOutStream (bsc#1160251).

CVE-2019-15695: Fixed a stack-based buffer overflow, which could be triggered from CMsgReader::readSetCursor (bsc#1159860).

Other bugs fixed :

Fix random connection freezes (bsc#1169952, bsc#1160249, bsc#1165680) :

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 Server 12-SP5 :

zypper in -t patch SUSE-SLE-SERVER-12-SP5-2020-1749=1

SUSE Linux Enterprise Server 12-SP4 :

zypper in -t patch SUSE-SLE-SERVER-12-SP4-2020-1749=1

Plugin Details

Severity: High

ID: 138296

File Name: suse_SU-2020-1749-1.nasl

Version: 1.3

Type: local

Agent: unix

Family: SuSE Local Security Checks

Published: 7/9/2020

Updated: 3/1/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.1

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

CVSS Score Source: CVE-2019-15695

CVSS v3

Risk Factor: High

Base Score: 7.2

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:libxvnc1-debuginfo, p-cpe:/a:novell:suse_linux:xorg-x11-xvnc, cpe:/o:novell:suse_linux:12, p-cpe:/a:novell:suse_linux:tigervnc-debuginfo, p-cpe:/a:novell:suse_linux:xorg-x11-xvnc-debuginfo, p-cpe:/a:novell:suse_linux:tigervnc, p-cpe:/a:novell:suse_linux:tigervnc-debugsource, p-cpe:/a:novell:suse_linux:libxvnc1

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/25/2020

Vulnerability Publication Date: 12/26/2019

Reference Information

CVE: CVE-2019-15691, CVE-2019-15692, CVE-2019-15693, CVE-2019-15694, CVE-2019-15695

Detections

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