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CVE-2020-0551

Published: 10 March 2020

Load value injection in some Intel(R) Processors utilizing speculative execution may allow an authenticated user to potentially enable information disclosure via a side channel with local access. The list of affected products is provided in intel-sa-00334: https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00334.html

Notes

AuthorNote
sbeattie
only affects processors from Intel
primary impact is for SGX users. May need toolchain updates
for applications that are targeted for use in SGX enclaves.
most Ubuntu kernels do not support or have SGX drivers
available, and so are not affected. The linux-azure kernels do have
SGX enabled (as of
https://bugs.launchpad.net/ubuntu/+source/linux-azure/+bug/1844245 )
and thus the Ubuntu Kernel team is investigating further. The
guidance that we have received so far from Intel indicates that it is
only SGX applications that need mitigations.
looking at the upstream intel SGX DCAP driver as of
2020-11-17, there does not seem to have been any changes due to
this issue, so it is only software running in the enclave itself
that is affected; marking linux-azure kernels as not-affected.

Priority

Medium

Cvss 3 Severity Score

5.6

Score breakdown

Status

Package Release Status
linux-gke-5.4
Launchpad, Ubuntu, Debian
bionic Not vulnerable

focal Does not exist

groovy Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

linux-gkeop-5.4
Launchpad, Ubuntu, Debian
bionic Not vulnerable

focal Does not exist

groovy Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

linux-hwe-5.8
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Not vulnerable

groovy Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

linux-azure-5.3
Launchpad, Ubuntu, Debian
bionic Ignored
(end of life, was not-affected)
eoan Does not exist

focal Does not exist

groovy Does not exist

trusty Does not exist

upstream Not vulnerable
(SGX not included/enabled)
xenial Does not exist

linux-aws-5.4
Launchpad, Ubuntu, Debian
bionic Not vulnerable

focal Does not exist

groovy Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

linux-gcp-5.4
Launchpad, Ubuntu, Debian
bionic Not vulnerable

focal Does not exist

groovy Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

linux-oracle-5.4
Launchpad, Ubuntu, Debian
bionic Not vulnerable

focal Does not exist

groovy Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

intel-microcode
Launchpad, Ubuntu, Debian
bionic Not vulnerable

eoan Ignored
(end of life)
focal Not vulnerable

groovy Not vulnerable

trusty Not vulnerable

upstream Not vulnerable

xenial Not vulnerable

linux
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(SGX not included/enabled)
eoan Not vulnerable
(SGX not included/enabled)
focal Not vulnerable
(SGX not included/enabled)
groovy Not vulnerable
(SGX not included/enabled)
trusty Not vulnerable
(SGX not included/enabled)
upstream Not vulnerable
(SGX not included/enabled)
xenial Not vulnerable
(SGX not included/enabled)
linux-aws
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(SGX not included/enabled)
eoan Not vulnerable
(SGX not included/enabled)
focal Not vulnerable
(SGX not included/enabled)
groovy Not vulnerable
(SGX not included/enabled)
trusty Not vulnerable
(SGX not included/enabled)
upstream Not vulnerable
(SGX not included/enabled)
xenial Not vulnerable
(SGX not included/enabled)
linux-aws-5.0
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(SGX not included/enabled)
eoan Does not exist

focal Does not exist

groovy Does not exist

trusty Does not exist

upstream Not vulnerable
(SGX not included/enabled)
xenial Does not exist

linux-aws-5.3
Launchpad, Ubuntu, Debian
bionic Not vulnerable

eoan Does not exist

focal Does not exist

groovy Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

linux-aws-hwe
Launchpad, Ubuntu, Debian
bionic Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

trusty Does not exist

upstream Not vulnerable
(SGX not included/enabled)
xenial Not vulnerable
(SGX not included/enabled)
linux-azure
Launchpad, Ubuntu, Debian
bionic Ignored
(end of life, was not-affected)
eoan Ignored
(end of life)
focal Not vulnerable

groovy Not vulnerable

trusty Ignored
(was not-affected ESM criteria)
upstream Not vulnerable
(SGX not included/enabled)
xenial Not vulnerable

linux-azure-4.15
Launchpad, Ubuntu, Debian
bionic Not vulnerable

eoan Does not exist

focal Does not exist

groovy Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

linux-azure-5.4
Launchpad, Ubuntu, Debian
bionic Not vulnerable

focal Does not exist

groovy Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

linux-azure-edge
Launchpad, Ubuntu, Debian
bionic Ignored
(end of life, was needs-triage)
eoan Does not exist

focal Does not exist

groovy Does not exist

trusty Does not exist

upstream Not vulnerable
(SGX not included/enabled)
xenial Does not exist

linux-gcp
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(SGX not included/enabled)
eoan Not vulnerable
(SGX not included/enabled)
focal Not vulnerable
(SGX not included/enabled)
groovy Not vulnerable
(SGX not included/enabled)
trusty Does not exist

upstream Not vulnerable
(SGX not included/enabled)
xenial Not vulnerable
(SGX not included/enabled)
linux-gcp-4.15
Launchpad, Ubuntu, Debian
bionic Not vulnerable

eoan Does not exist

focal Does not exist

groovy Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

linux-gcp-5.3
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(SGX not included/enabled)
eoan Does not exist

focal Does not exist

groovy Does not exist

trusty Does not exist

upstream Not vulnerable
(SGX not included/enabled)
xenial Does not exist

linux-gcp-edge
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(SGX not included/enabled)
eoan Does not exist

focal Does not exist

groovy Does not exist

trusty Does not exist

upstream Not vulnerable
(SGX not included/enabled)
xenial Does not exist

linux-gke-4.15
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(SGX not included/enabled)
eoan Does not exist

focal Does not exist

groovy Does not exist

trusty Does not exist

upstream Not vulnerable
(SGX not included/enabled)
xenial Does not exist

linux-gke-5.0
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(SGX not included/enabled)
eoan Does not exist

focal Does not exist

groovy Does not exist

trusty Does not exist

upstream Not vulnerable
(SGX not included/enabled)
xenial Does not exist

linux-gke-5.3
Launchpad, Ubuntu, Debian
bionic Not vulnerable

eoan Does not exist

focal Does not exist

groovy Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

linux-hwe
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(SGX not included/enabled)
eoan Does not exist

focal Does not exist

groovy Does not exist

trusty Does not exist

upstream Not vulnerable
(SGX not included/enabled)
xenial Not vulnerable
(SGX not included/enabled)
linux-hwe-5.4
Launchpad, Ubuntu, Debian
bionic Not vulnerable

focal Does not exist

groovy Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

linux-hwe-edge
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(SGX not included/enabled)
eoan Does not exist

focal Does not exist

groovy Does not exist

trusty Does not exist

upstream Not vulnerable
(SGX not included/enabled)
xenial Not vulnerable
(SGX not included/enabled)
linux-kvm
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(SGX not included/enabled)
eoan Not vulnerable
(SGX not included/enabled)
focal Not vulnerable
(SGX not included/enabled)
groovy Not vulnerable
(SGX not included/enabled)
trusty Does not exist

upstream Not vulnerable
(SGX not included/enabled)
xenial Not vulnerable
(SGX not included/enabled)
linux-lts-trusty
Launchpad, Ubuntu, Debian
bionic Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

trusty Does not exist

upstream Not vulnerable
(SGX not included/enabled)
xenial Does not exist

linux-lts-xenial
Launchpad, Ubuntu, Debian
bionic Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

trusty Not vulnerable
(SGX not included/enabled)
upstream Not vulnerable
(SGX not included/enabled)
xenial Does not exist

linux-oem
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(SGX not included/enabled)
eoan Not vulnerable
(SGX not included/enabled)
focal Does not exist

groovy Does not exist

trusty Does not exist

upstream Not vulnerable
(SGX not included/enabled)
xenial Not vulnerable
(SGX not included/enabled)
linux-oem-5.6
Launchpad, Ubuntu, Debian
bionic Does not exist

eoan Does not exist

focal Not vulnerable
(SGX not included/enabled)
groovy Does not exist

trusty Does not exist

upstream Not vulnerable
(SGX not included/enabled)
xenial Does not exist

linux-oem-osp1
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(SGX not included/enabled)
eoan Not vulnerable
(SGX not included/enabled)
focal Does not exist

groovy Does not exist

trusty Does not exist

upstream Not vulnerable
(SGX not included/enabled)
xenial Does not exist

linux-oracle
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(SGX not included/enabled)
eoan Not vulnerable
(SGX not included/enabled)
focal Not vulnerable
(SGX not included/enabled)
groovy Not vulnerable
(SGX not included/enabled)
trusty Does not exist

upstream Not vulnerable
(SGX not included/enabled)
xenial Not vulnerable
(SGX not included/enabled)
linux-oracle-5.0
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(SGX not included/enabled)
eoan Does not exist

focal Does not exist

groovy Does not exist

trusty Does not exist

upstream Not vulnerable
(SGX not included/enabled)
xenial Does not exist

linux-oracle-5.3
Launchpad, Ubuntu, Debian
bionic Not vulnerable

eoan Does not exist

focal Does not exist

groovy Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

linux-raspi
Launchpad, Ubuntu, Debian
bionic Does not exist

eoan Does not exist

focal Not vulnerable

groovy Not vulnerable

trusty Does not exist

upstream Needs triage

xenial Does not exist

linux-raspi-5.4
Launchpad, Ubuntu, Debian
bionic Not vulnerable

focal Does not exist

groovy Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

linux-raspi2
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(SGX not included/enabled)
eoan Not vulnerable
(SGX not included/enabled)
focal Not vulnerable
(SGX not included/enabled)
groovy Does not exist

trusty Does not exist

upstream Not vulnerable
(SGX not included/enabled)
xenial Not vulnerable
(SGX not included/enabled)
linux-raspi2-5.3
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(SGX not included/enabled)
eoan Does not exist

focal Does not exist

groovy Does not exist

trusty Does not exist

upstream Not vulnerable
(SGX not included/enabled)
xenial Does not exist

linux-riscv
Launchpad, Ubuntu, Debian
bionic Does not exist

eoan Does not exist

focal Not vulnerable

groovy Not vulnerable

trusty Does not exist

upstream Needs triage

xenial Does not exist

linux-snapdragon
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(SGX not included/enabled)
eoan Does not exist

focal Does not exist

groovy Does not exist

trusty Does not exist

upstream Not vulnerable
(SGX not included/enabled)
xenial Not vulnerable
(SGX not included/enabled)

Severity score breakdown

Parameter Value
Base score 5.6
Attack vector Local
Attack complexity High
Privileges required Low
User interaction None
Scope Changed
Confidentiality High
Integrity impact None
Availability impact None
Vector CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N