RHEL 7 : libvncserver (RHSA-2019:0059)

critical Nessus Plugin ID 121203

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Synopsis

The remote Red Hat host is missing a security update for libvncserver.

Description

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2019:0059 advisory.

LibVNCServer is a C library that enables you to implement VNC server functionality into own programs.

Security Fix(es):

* libvncserver: Heap out-of-bounds write in rfbserver.c in rfbProcessFileTransferReadBuffer() allows for potential code execution (CVE-2018-15127)

For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

Solution

Update the RHEL libvncserver package based on the guidance in RHSA-2019:0059.

Plugin Details

Severity: Critical

ID: 121203

File Name: redhat-RHSA-2019-0059.nasl

Version: 1.7

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 1/16/2019

Updated: 11/5/2024

Supported Sensors: Agentless 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: High

Base Score: 7.5

Temporal Score: 5.5

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

CVSS Score Source: CVE-2018-15127

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: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:libvncserver-devel, p-cpe:/a:redhat:enterprise_linux:libvncserver, cpe:/o:redhat:enterprise_linux:7

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

Exploit Ease: No known exploits are available

Patch Publication Date: 1/15/2019

Vulnerability Publication Date: 12/19/2018

Reference Information

CVE: CVE-2018-15127

CWE: 122

RHSA: 2019:0059

Detections

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