CentOS 7 : tigervnc (CESA-2020:3875)

high Nessus Plugin ID 141600
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.


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


The remote CentOS Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the CESA-2020:3875 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: High

ID: 141600

File Name: centos_RHSA-2020-3875.nasl

Version: 1.4

Type: local

Agent: unix

Published: 10/20/2020

Updated: 11/30/2020

Dependencies: ssh_get_info.nasl

Risk Information

CVSS Score Source: CVE-2019-15695


Risk Factor: Medium

Score: 5.9


Risk Factor: Medium

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


Risk Factor: High

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: 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, cpe:/o:centos:centos:7

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: 10/20/2020

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: 2020:3875

CWE: 121, 122, 672