Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 18.10 : libvncserver vulnerabilities (USN-3877-1)

High Nessus Plugin ID 121541

Synopsis

The remote Ubuntu host is missing one or more security-related patches.

Description

It was discovered that LibVNCServer incorrectly handled certain operations. A remote attacker able to connect to applications using LibVNCServer could possibly use this issue to obtain sensitive information, cause a denial of service, or execute arbitrary code.

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

Solution

Update the affected libvncclient1, libvncserver0 and / or libvncserver1 packages.

See Also

https://usn.ubuntu.com/3877-1/

Plugin Details

Severity: High

ID: 121541

File Name: ubuntu_USN-3877-1.nasl

Version: 1.2

Type: local

Agent: unix

Published: 2019/02/01

Updated: 2019/09/18

Dependencies: 12634

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 7.8

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

CVSS v3.0

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:canonical:ubuntu_linux:libvncclient1, p-cpe:/a:canonical:ubuntu_linux:libvncserver0, p-cpe:/a:canonical:ubuntu_linux:libvncserver1, cpe:/o:canonical:ubuntu_linux:14.04, cpe:/o:canonical:ubuntu_linux:16.04, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:18.10

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

Patch Publication Date: 2019/01/31

Vulnerability Publication Date: 2018/12/19

Reference Information

CVE: CVE-2018-15126, CVE-2018-15127, CVE-2018-20019, CVE-2018-20020, CVE-2018-20021, CVE-2018-20022, CVE-2018-20023, CVE-2018-20024, CVE-2018-20748, CVE-2018-20749, CVE-2018-20750, CVE-2018-6307

USN: 3877-1