PT-2020-2985 · Libvncserver+4 · Libvncserver+4

Published 2020-06-17 · Updated 2022-03-09 · CVE-2020-14403

Positive Technologies (AI Summary)

CVSS v2.0

5.5

Medium

Base vector

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

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

Description The issue is caused by an out-of-bounds access in the libvncserver/hextile.c component of the LibVNCServer library. This can be exploited by a remote attacker to impact the confidentiality, integrity, and availability of protected information.

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/hextile.c component until a patch is available.

Fix

Buffer Overflow

Memory Corruption

Weakness Enumeration

CWE-119

CWE-787

Related Identifiers

ALT-PU-2020-2671

ALT-PU-2020-2694

BDU:2020-03152

CVE-2020-14403

DLA-2264-1

DLA-2347-1

MGASA-2020-0280

MGASA-2020-0288

OPENSUSE-SU-2024:10598-1

SUSE-SU-2020:2167-1

USN-4434-1

USN-4573-1

Affected Products

Alt Linux

Libvncserver

Linuxmint

Suse

Ubuntu

References · 75

• https://github.com/LibVNC/libvncserver/commit/74e8a70f2c9a5248d6718ce443e07c7ed314dfff · Patch
• https://osv.dev/vulnerability/MGASA-2020-0288 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2020-14403 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2020-0288.html · Security Note
• https://cve.org/CVERecord?id=CVE-2020-14403 · Security Note
• https://ubuntu.com/security/CVE-2020-14405 · Vendor Advisory
• https://wiki.astralinux.ru/pages/viewpage.action?pageId=47416144 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-14398 · Vendor Advisory
• 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-2020:2167-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-14402 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-14399 · Vendor Advisory
• https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf · Patch
• https://usn.ubuntu.com/4573-1 · Vendor Advisory