CVE-2020-11933

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Summary

CVECVE-2020-11933
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2020-07-29 17:15:00 UTC
Updated2021-11-04 17:45:00 UTC
Descriptioncloud-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.

Risk And Classification

Problem Types: NVD-CWE-Other

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Canonical Snapd All All All All
Operating System Canonical Ubuntu Linux 16.04 All All All
Operating System Canonical Ubuntu Linux 18.04 All All All
Operating System Canonical Ubuntu Linux 19.10 All All All
Operating System Canonical Ubuntu Linux 20.04 All All All
Operating System Canonical Ubuntu Linux 16.04 All All All
Operating System Canonical Ubuntu Linux 18.04 All All All
Operating System Canonical Ubuntu Linux 19.10 All All All
Operating System Canonical Ubuntu Linux 20.04 All All All

References

ReferenceSourceLinkTags
USN-4424-1: snapd vulnerabilities | Ubuntu security notices | Ubuntu CONFIRM ubuntu.com Vendor Advisory
Bug #1879530 “ubuntu core cloud-init allows infinite creation of...” : Bugs : snapd CONFIRM launchpad.net Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

LEGACY: Ian Johnson

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