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CVE-2020-0549

Published: 27 January 2020

Cleanup errors in some data cache evictions for some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.

From the Ubuntu Security Team

It was discovered that on some Intel processors, data from the most recently evicted modified L1 data cache (L1D) line may be propagated into an unused (invalid) L1D fill buffer. A local attacker could possibly use this to expose sensitive information.

Notes

AuthorNote
tyhicks
This issue only affects Intel processors

Priority

Medium

Cvss 3 Severity Score

5.5

Score breakdown

Status

Package Release Status
intel-microcode
Launchpad, Ubuntu, Debian
focal
Released (3.20200609.0ubuntu0.20.04.0)
bionic
Released (3.20200609.0ubuntu0.18.04.0)
disco Ignored
(end of life)
eoan
Released (3.20200609.0ubuntu0.19.10.0)
groovy
Released (3.20200609.0ubuntu0.20.04.0)
trusty
Released (3.20200609.0ubuntu0.14.04.0)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
upstream Needed

xenial
Released (3.20200609.0ubuntu0.16.04.0)

Severity score breakdown

Parameter Value
Base score 5.5
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact None
Availability impact None
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N