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.
References
Link Resource
https://launchpad.net/bugs/1879530 Third Party Advisory
https://ubuntu.com/USN-4424-1 Vendor Advisory
History

No history.

cve-icon MITRE Information

Status: PUBLISHED

Assigner: canonical

Published: 2020-05-19T00:00:00

Updated: 2020-07-29T16:25:25

Reserved: 2020-04-20T00:00:00


Link: CVE-2020-11933

JSON object: View

cve-icon NVD Information

Status : Analyzed

Published: 2020-07-29T17:15:12.857

Modified: 2021-11-04T17:45:25.967


Link: CVE-2020-11933

JSON object: View

cve-icon Redhat Information

No data.