CVE-2020-11933

local snapd exploit through cloud-init

Published Jul 29, 2020 CVSS 3.1 · 7.3 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2020-4270 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.
Ubuntu USN Ubuntu USN USN-4424-1 snapd vulnerabilities
History

No history.

Weaknesses

Sources

Status
PUBLISHED
Assigner
canonical
Published
Updated
Sep 17, 2024, 12:40 AM
Reserved
Apr 20, 2020, 12:00 AM
Status
Modified
Published
Jul 29, 2020, 5:15 PM
Modified
Jun 17, 2026, 2:51 AM