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CVE-2017-18641

Published: 10 February 2020

In LXC 2.0, many template scripts download code over cleartext HTTP, and omit a digital-signature check, before running it to bootstrap containers.

Notes

AuthorNote
mdeslaur
in lxc 3.0, the old templates were split out into the
lxc-templates package and distrobuilder is now used instead.
https://github.com/lxc/lxc/commit/aafb5ea2a849056f9866359996605af0290605bd

as of 2020-05-13, no complete fix for the issues are available
rodrigo-zaiden
as of 2022-03-09, there is still no complete fix.

Priority

Medium

Cvss 3 Severity Score

8.1

Score breakdown

Status

Package Release Status
lxc
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(3.0.3-0ubuntu1~18.04.1)
eoan Not vulnerable
(3.0.4-0ubuntu1)
focal Not vulnerable
(3.0.4-0ubuntu2)
groovy Not vulnerable
(3.0.4-0ubuntu2)
hirsute Not vulnerable
(3.0.4-0ubuntu2)
impish Not vulnerable
(3.0.4-0ubuntu2)
jammy Not vulnerable
(3.0.4-0ubuntu2)
kinetic Not vulnerable
(3.0.4-0ubuntu2)
lunar Not vulnerable
(3.0.4-0ubuntu2)
mantic Not vulnerable
(3.0.4-0ubuntu2)
trusty Needs triage

upstream
Released (1:3.0.3-1)
xenial Deferred

lxc-templates
Launchpad, Ubuntu, Debian
bionic Deferred

eoan Ignored
(end of life)
focal Deferred

groovy Ignored
(end of life)
hirsute Ignored
(end of life)
impish Ignored
(end of life)
jammy Deferred

kinetic Ignored
(end of life, was deferred)
lunar Ignored
(end of life, was deferred)
mantic Deferred

trusty Does not exist

upstream Needs triage

xenial Does not exist

Severity score breakdown

Parameter Value
Base score 8.1
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H