CVE-2020-14403

Publication date 17 June 2020

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

An issue was discovered in LibVNCServer before 0.9.13. libvncserver/hextile.c allows out-of-bounds access via encodings.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
libvncserver	25.04 plucky	Not affected
	24.10 oracular	Not affected
	24.04 LTS noble	Not affected
	23.10 mantic	Not affected
	23.04 lunar	Not affected
	22.10 kinetic	Not affected
	22.04 LTS jammy	Not affected
	21.10 impish	Not affected
	21.04 hirsute	Not affected
	20.10 groovy	Not affected
	20.04 LTS focal	Fixed 0.9.12+dfsg-9ubuntu0.2
	19.10 eoan	Ignored end of life
	18.04 LTS bionic	Fixed 0.9.11+dfsg-1ubuntu1.3
	16.04 LTS xenial	Fixed 0.9.10+dfsg-3ubuntu0.16.04.5
	14.04 LTS trusty	Not in release
veyon	25.04 plucky	Needs evaluation
	24.10 oracular	Needs evaluation
	24.04 LTS noble	Needs evaluation
	23.10 mantic	Ignored end of life, was needs-triage
	23.04 lunar	Ignored end of life, was needs-triage
	22.10 kinetic	Ignored end of life, was needs-triage
	22.04 LTS jammy	Needs evaluation
	21.10 impish	Ignored end of life
	21.04 hirsute	Ignored end of life
	20.10 groovy	Ignored end of life
	20.04 LTS focal	Needs evaluation
	19.10 eoan	Ignored end of life
	18.04 LTS bionic	Not in release
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Not in release
vino	25.04 plucky	Fixed 3.22.0-6ubuntu2
	24.10 oracular	Fixed 3.22.0-6ubuntu2
	24.04 LTS noble	Fixed 3.22.0-6ubuntu2
	23.10 mantic	Fixed 3.22.0-6ubuntu2
	23.04 lunar	Fixed 3.22.0-6ubuntu2
	22.10 kinetic	Fixed 3.22.0-6ubuntu2
	22.04 LTS jammy	Fixed 3.22.0-6ubuntu2
	21.10 impish	Fixed 3.22.0-6ubuntu2
	21.04 hirsute	Fixed 3.22.0-6ubuntu2
	20.10 groovy	Fixed 3.22.0-6ubuntu2
	20.04 LTS focal	Fixed 3.22.0-5ubuntu2.1
	18.04 LTS bionic	Fixed 3.22.0-3ubuntu1.1
	16.04 LTS xenial	Fixed 3.8.1-0ubuntu9.3
	14.04 LTS trusty	Not in release
x11vnc	25.04 plucky	Not affected
	24.10 oracular	Not affected
	24.04 LTS noble	Not affected
	23.10 mantic	Ignored end of life, was needs-triage
	23.04 lunar	Ignored end of life, was needs-triage
	22.10 kinetic	Ignored end of life, was needs-triage
	22.04 LTS jammy	Not affected
	21.10 impish	Ignored end of life
	21.04 hirsute	Ignored end of life
	20.10 groovy	Ignored end of life
	20.04 LTS focal	Needs evaluation
	19.10 eoan	Ignored end of life
	18.04 LTS bionic	Not affected
	16.04 LTS xenial	Not affected
	14.04 LTS trusty	Needs evaluation

Notes

mdeslaur

same commit as CVE-2020-14402

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
libvncserver	Upstream: 74e8a70

Severity score breakdown

Parameter	Value
Base score	5.4 · Medium
Attack vector	Network
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	Low
Integrity impact	None
Availability impact	Low
Vector	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L