CVE-2018-7225

Published: 19 February 2018

An issue was discovered in LibVNCServer through 0.9.11. rfbProcessClientNormalMessage() in rfbserver.c does not sanitize msg.cct.length, leading to access to uninitialized and potentially sensitive data or possibly unspecified other impact (e.g., an integer overflow) via specially crafted VNC packets.

Priority

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package	Release	Status
italc Launchpad, Ubuntu, Debian	bionic	Released (1:3.0.3+dfsg1-3ubuntu0.1)
	focal	Does not exist
	groovy	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	mantic	Does not exist
	trusty	Does not exist (trusty was needed)
	upstream	Released (1:3.0.3+dfsg1-1+deb9u1, 1:2.0.2+dfsg1-2+deb8u1)
	xenial	Released (1:2.0.2+dfsg1-4ubuntu0.1)
libvncserver Launchpad, Ubuntu, Debian	artful	Released (0.9.11+dfsg-1ubuntu0.1)
	bionic	Released (0.9.11+dfsg-1ubuntu0.1)
	focal	Released (0.9.11+dfsg-1ubuntu0.1)
	groovy	Released (0.9.11+dfsg-1ubuntu1)
	hirsute	Released (0.9.11+dfsg-1ubuntu1)
	impish	Released (0.9.11+dfsg-1ubuntu1)
	jammy	Released (0.9.11+dfsg-1ubuntu1)
	kinetic	Released (0.9.11+dfsg-1ubuntu1)
	lunar	Released (0.9.11+dfsg-1ubuntu1)
	mantic	Released (0.9.11+dfsg-1ubuntu1)
	trusty	Released (0.9.9+dfsg-1ubuntu1.3)
	upstream	Needs triage
	xenial	Released (0.9.10+dfsg-3ubuntu0.16.04.2)
	Patches: upstream: https://github.com/LibVNC/libvncserver/commit/28afb6c537dc82ba04d5f245b15ca7205c6dbb9c
tightvnc Launchpad, Ubuntu, Debian	bionic	Needs triage
	focal	Needs triage
	groovy	Ignored (end of life)
	hirsute	Ignored (end of life)
	impish	Ignored (end of life)
	jammy	Needs triage
	kinetic	Ignored (end of life, was needs-triage)
	lunar	Ignored (end of life, was needs-triage)
	mantic	Needs triage
	trusty	Released (1.3.9-6.5+deb8u1build0.14.04.1~esm1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	upstream	Released (1:1.3.9-6.5+deb8u1)
	xenial	Needs triage
vino Launchpad, Ubuntu, Debian	bionic	Released (3.22.0-3ubuntu1.1)
	focal	Released (3.22.0-5ubuntu2.1)
	groovy	Released (3.22.0-6ubuntu1)
	hirsute	Released (3.22.0-6ubuntu1)
	impish	Released (3.22.0-6ubuntu1)
	jammy	Released (3.22.0-6ubuntu1)
	kinetic	Released (3.22.0-6ubuntu1)
	lunar	Released (3.22.0-6ubuntu1)
	mantic	Released (3.22.0-6ubuntu1)
	trusty	Does not exist
	upstream	Needs triage
	xenial	Released (3.8.1-0ubuntu9.3)

Severity score breakdown

Parameter	Value
Base score	9.8
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Bugs

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