Missing Initialization of Resource Affecting libvncserver package, versions <0:0.9.11-17.el8


Severity

Recommended
medium

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.21% (60th percentile)

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  • Snyk IDSNYK-ALMALINUX8-LIBVNCSERVER-5619390
  • published28 May 2023
  • disclosed18 May 2021

Introduced: 18 May 2021

CVE-2018-21247  (opens in a new tab)
CWE-909  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:8 libvncserver to version 0:0.9.11-17.el8 or higher.
This issue was patched in ALSA-2021:1811.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libvncserver package and not the libvncserver package as distributed by AlmaLinux. See How to fix? for AlmaLinux:8 relevant fixed versions and status.

An issue was discovered in LibVNCServer before 0.9.13. There is an information leak (of uninitialized memory contents) in the libvncclient/rfbproto.c ConnectToRFBRepeater function.

CVSS Scores

version 3.1