CVE-2020-11933
High
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.
SeverityHigh
CVSS7.3
Exploit probability—
ProductCanonical Snapd
PublishedJul 29, 2020
First seenJul 29, 2020
Weakness typeCWE-264CWE-264
How to fix
Update
- canonical snapd2.45.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| canonical snapd | v < 2.45.2 | 2.45.2 |
| canonical ubuntu_linux | 16.04, 18.04, 19.10, 20.04 | — |
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