CVE-2018-20020

LibVNC before commit 7b1ef0ffc4815cab9a96c7278394152bdc89dc4d contains heap out-of-bound write vulnerability inside structure in VNC client code that can result remote code execution

CVSS v3 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3 : CRITICAL

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

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

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

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://ics-cert.kaspersky.com/advisories/klcert-advisories/2018/12/19/klcert-18-030-libvnc-heap-out-of-bound-write/	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/12/msg00017.html	Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
https://lists.debian.org/debian-lts-announce/2019/11/msg00033.html
https://security.gentoo.org/glsa/201908-05
https://security.gentoo.org/glsa/202006-06
https://usn.ubuntu.com/3877-1/	Third Party Advisory
https://usn.ubuntu.com/4547-1/
https://usn.ubuntu.com/4547-2/
https://usn.ubuntu.com/4587-1/
https://www.debian.org/security/2019/dsa-4383	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:libvnc_project:libvncserver:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR	cpe:2.3:o:canonical:ubuntu_linux:14.04::::lts:::
	cpe:2.3:o:canonical:ubuntu_linux:16.04::::lts:::
	cpe:2.3:o:canonical:ubuntu_linux:18.04::::lts:::
	cpe:2.3:o:canonical:ubuntu_linux:18.10:::::::*
	cpe:2.3:o:debian:debian_linux:8.0:::::::*
	cpe:2.3:o:debian:debian_linux:9.0:::::::*

History

No history.

Information

Published : 2018-12-19 16:29

Updated : 2023-12-10 12:44

NVD link : CVE-2018-20020

Mitre link : CVE-2018-20020

CVE.ORG link : CVE-2018-20020

JSON object : View

Products Affected

canonical

ubuntu_linux

libvnc_project

libvncserver

debian

debian_linux

CWE

CWE-787

Out-of-bounds Write

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