CentOS 8 : tigervnc (CESA-2020:1497)

medium Nessus Plugin ID 146003
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VPR Score: 5.9


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


The remote CentOS Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CESA-2020:1497 advisory.

- tigervnc: Stack use-after-return due to incorrect usage of stack memory in ZRLEDecoder (CVE-2019-15691)

- tigervnc: Heap buffer overflow triggered from CopyRectDecoder due to incorrect value checks (CVE-2019-15692)

- tigervnc: Heap buffer overflow in TightDecoder::FilterGradient (CVE-2019-15693)

- tigervnc: Heap buffer overflow in DecodeManager::decodeRect (CVE-2019-15694)

- tigervnc: Stack buffer overflow in CMsgReader::readSetCursor (CVE-2019-15695)

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


Update the affected packages.

See Also


Plugin Details

Severity: Medium

ID: 146003

File Name: centos8_RHSA-2020-1497.nasl

Version: 1.4

Type: local

Agent: unix

Published: 2/1/2021

Updated: 3/23/2021

Dependencies: ssh_get_info.nasl

Risk Information

Risk Factor: Medium

VPR Score: 5.9

CVSS Score Source: CVE-2019-15695

CVSS v2.0

Base Score: 6.5

Temporal Score: 4.8

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

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

CVSS v3.0

Base Score: 7.2

Temporal Score: 6.3

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

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

Vulnerability Information

CPE: cpe:/o:centos:centos:8, p-cpe:/a:centos:centos:tigervnc, p-cpe:/a:centos:centos:tigervnc-icons, p-cpe:/a:centos:centos:tigervnc-license, p-cpe:/a:centos:centos:tigervnc-server, p-cpe:/a:centos:centos:tigervnc-server-applet, p-cpe:/a:centos:centos:tigervnc-server-minimal, p-cpe:/a:centos:centos:tigervnc-server-module

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

Exploit Ease: No known exploits are available

Patch Publication Date: 4/16/2020

Vulnerability Publication Date: 12/26/2019

Reference Information

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

RHSA: 2020:1497