Debian DSA-4221-1 : libvncserver - security update

critical Nessus Plugin ID 110420
New! Plugin Severity Now Using CVSS v3

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Synopsis

The remote Debian host is missing a security-related update.

Description

Alexander Peslyak discovered that insufficient input sanitising of RFB packets in LibVNCServer could result in the disclosure of memory contents.

Solution

Upgrade the libvncserver packages.

For the oldstable distribution (jessie), this problem has been fixed in version 0.9.9+dfsg2-6.1+deb8u3.

For the stable distribution (stretch), this problem has been fixed in version 0.9.11+dfsg-1+deb9u1.

See Also

http://www.nessus.org/u?b930abb4

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

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

https://www.debian.org/security/2018/dsa-4221

Plugin Details

Severity: Critical

ID: 110420

File Name: debian_DSA-4221.nasl

Version: 1.3

Type: local

Agent: unix

Published: 6/11/2018

Updated: 11/13/2018

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.5

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

CVSS v3

Risk Factor: Critical

Base Score: 9.8

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:libvncserver, cpe:/o:debian:debian_linux:8.0, cpe:/o:debian:debian_linux:9.0

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

Patch Publication Date: 6/8/2018

Reference Information

CVE: CVE-2018-7225

DSA: 4221