PT-2020-2989 · Libvncserver+8 · Libvncserver+8

Published 2020-06-17 · Updated 2022-03-10 · CVE-2020-14397

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions LibVNCServer versions prior to 0.9.13

Description The issue is related to a NULL pointer dereference in the libvncserver/rfbregion.c component of the LibVNCServer library. This could potentially allow a remote attacker to cause a denial of service.

Recommendations For versions prior to 0.9.13, update to version 0.9.13 or later to resolve the issue. As a temporary workaround, consider restricting access to the libvncserver/rfbregion.c component until a patch is available.

Fix

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

ALSA-2021:1811

ALT-PU-2020-2671

ALT-PU-2020-2694

BDU:2020-03157

CESA-2021_1811

CVE-2020-14397

DLA-2264-1

DLA-2347-1

MGASA-2020-0280

MGASA-2020-0288

OPENSUSE-SU-2020:0988-1

OPENSUSE-SU-2020:1025-1

OPENSUSE-SU-2020:1056-1

OPENSUSE-SU-2020_0988-1

OPENSUSE-SU-2020_1025-1

OPENSUSE-SU-2020_1056-1

OPENSUSE-SU-2024:10598-1

RHSA-2021:1811

RHSA-2021_1811

RLSA-2021:1811

SUSE-SU-2020:14424-1

SUSE-SU-2020:1922-1

SUSE-SU-2020:2167-1

SUSE-SU-2020_14424-1

USN-4434-1

USN-4573-1

Affected Products

Alt Linux

Almalinux

Centos

Libvncserver

Linuxmint

Red Hat

Rocky Linux

Suse

Ubuntu

References · 103

• https://github.com/LibVNC/libvncserver/commit/38e98ee61d74f5f5ab4aa4c77146faad1962d6d0 · Patch
• https://cve.org/CVERecord?id=CVE-2020-14397 · Security Note
• https://osv.dev/vulnerability/MGASA-2020-0288 · Vendor Advisory
• https://errata.almalinux.org/8/ALSA-2021-1811.html · Vendor Advisory
• https://advisories.mageia.org/MGASA-2020-0288.html · Security Note
• https://ubuntu.com/security/CVE-2020-14405 · Vendor Advisory
• https://wiki.astralinux.ru/pages/viewpage.action?pageId=47416144 · Vendor Advisory
• https://osv.dev/vulnerability/RLSA-2021:1811 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-14398 · Vendor Advisory
• https://osv.dev/vulnerability/ALSA-2021:1811 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-14397 · Security Note
• https://osv.dev/vulnerability/DLA-2264-1 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se81-bulletin-20211019SE81 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2020:14424-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2020:2167-1 · Vendor Advisory