CVE-2018-20024

high
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Description

LibVNC before commit 4a21bbd097ef7c44bb000c3bd0907f96a10e4ce7 contains null pointer dereference in VNC client code that can result DoS.

References

https://ics-cert.kaspersky.com/advisories/klcert-advisories/2018/12/19/klcert-18-034-libvnc-null-pointer-dereference/

https://lists.debian.org/debian-lts-announce/2018/12/msg00017.html

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/

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

Details

Source: MITRE

Published: 2018-12-19

Updated: 2020-10-23

Type: CWE-476

Risk Information

CVSS v2

Base Score: 5

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

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3

Base Score: 7.5

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

Impact Score: 3.6

Exploitability Score: 3.9

Severity: HIGH

Tenable Plugins

View all (18 total)

IDNameProductFamilySeverity
141545Ubuntu 16.04 LTS : iTALC vulnerabilities (USN-4587-1)NessusUbuntu Local Security Checks
critical
140929Ubuntu 16.04 LTS : SSVNC vulnerabilities (USN-4547-2)NessusUbuntu Local Security Checks
critical
140920Ubuntu 18.04 LTS : iTALC vulnerabilities (USN-4547-1)NessusUbuntu Local Security Checks
critical
137443GLSA-202006-06 : ssvnc: Multiple vulnerabilitiesNessusGentoo Local Security Checks
critical
131434Debian DLA-2016-1 : ssvnc security updateNessusDebian Local Security Checks
critical
130408Debian DLA-1979-1 : italc security updateNessusDebian Local Security Checks
critical
127563GLSA-201908-05 : LibVNCServer: Multiple vulnerabilitiesNessusGentoo Local Security Checks
critical
123109EulerOS 2.0 SP3 : libvncserver (EulerOS-SA-2019-1096)NessusHuawei Local Security Checks
critical
122378EulerOS 2.0 SP2 : libvncserver (EulerOS-SA-2019-1051)NessusHuawei Local Security Checks
critical
122206EulerOS 2.0 SP5 : libvncserver (EulerOS-SA-2019-1033)NessusHuawei Local Security Checks
critical
121561Debian DSA-4383-1 : libvncserver - security updateNessusDebian Local Security Checks
critical
121541Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 18.10 : LibVNCServer vulnerabilities (USN-3877-1)NessusUbuntu Local Security Checks
critical
121282openSUSE Security Update : LibVNCServer (openSUSE-2019-53)NessusSuSE Local Security Checks
critical
121160SUSE SLES11 Security Update : LibVNCServer (SUSE-SU-2019:13927-1)NessusSuSE Local Security Checks
critical
121158SUSE SLED15 / SLES15 Security Update : LibVNCServer (SUSE-SU-2019:0080-1)NessusSuSE Local Security Checks
critical
121154openSUSE Security Update : LibVNCServer (openSUSE-2019-45)NessusSuSE Local Security Checks
critical
121094SUSE SLES12 Security Update : LibVNCServer (SUSE-SU-2019:0060-1)NessusSuSE Local Security Checks
critical
119877Debian DLA-1617-1 : libvncserver security updateNessusDebian Local Security Checks
critical