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Ubuntu: USN-4424-1 (CVE-2020-11933): snapd vulnerabilities

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Ubuntu: USN-4424-1 (CVE-2020-11933): snapd vulnerabilities

Severity
5
CVSS
(AV:L/AC:L/Au:N/C:P/I:P/A:P)
Published
07/15/2020
Created
08/07/2020
Added
08/05/2020
Modified
03/22/2023

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.

Solution(s)

  • ubuntu-upgrade-snapd

References

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