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Debian DLA-1332-1 : libvncserver security update

critical Nessus Plugin ID 108766

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Synopsis

The remote Debian host is missing a security update.

Description

libvncserver version through 0.9.11. does not sanitize msg.cct.length which may result in access to uninitialized and potentially sensitive data or possibly unspecified other impact (e.g., an integer overflow) via specially crafted VNC packets.

For Debian 7 'Wheezy', these problems have been fixed in version 0.9.9+dfsg-1+deb7u3.

We recommend that you upgrade your libvncserver packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Upgrade the affected packages.

See Also

https://lists.debian.org/debian-lts-announce/2018/03/msg00035.html

https://packages.debian.org/source/wheezy/libvncserver

Plugin Details

Severity: Critical

ID: 108766

File Name: debian_DLA-1332.nasl

Version: 1.6

Type: local

Agent: unix

Published: 4/2/2018

Updated: 11/22/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.9

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

CVSS Score Source: CVE-2018-7225

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:libvncserver-dev, cpe:/o:debian:debian_linux:7.0, p-cpe:/a:debian:debian_linux:libvncserver0-dbg, p-cpe:/a:debian:debian_linux:libvncserver-config, p-cpe:/a:debian:debian_linux:linuxvnc, p-cpe:/a:debian:debian_linux:libvncserver0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 3/30/2018

Reference Information

CVE: CVE-2018-7225