CVEvulnerability

CVE-2020-11933

6.8 MEDIUM Published 2020-07-29 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2020-07-29
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.3 HIGH — CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
CVSS 3.1 ([email protected])
6.8 MEDIUM — CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
4.6 MEDIUM — AV:L/AC:L/Au:N/C:P/I:P/A:P
Weaknesses
CWE-264

Description

cloud-init as managed by snapd on Ubuntu Core 16 and Ubuntu Core 18 devices was run without restrictions on every boot, which a physical attacker could exploit by crafting cloud-init user-data/meta-data via external media to perform arbitrary changes on the device to bypass intended security mechanisms such as full disk encryption. This issue did not affect traditional Ubuntu systems. Fixed in snapd version 2.45.2, revision 8539 and core version 2.45.2, revision 9659.

Affected configurations

• canonical snapd (< 2.45.2) • canonical ubuntu linux 16.04 • canonical ubuntu linux 18.04 • canonical ubuntu linux 19.10 • canonical ubuntu linux 20.04

Related

Weakness · not in database (1)

References