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CVE-2020-24489

Published: 8 June 2021

Incomplete cleanup in some Intel(R) VT-d products may allow an authenticated user to potentially enable escalation of privilege via local access.

From the Ubuntu Security Team

It was discovered that some Intel processors may not properly invalidate cache entries used by Intel Virtualization Technology for Directed I/O (VT-d). This may allow a local user to perform a privilege escalation attack.

Notes

AuthorNote
sbeattie
INTEL-TA-00442
does not appear to be kernel/qemu aspect to this issue

Priority

High

Cvss 3 Severity Score

8.8

Score breakdown

Status

Package Release Status
intel-microcode
Launchpad, Ubuntu, Debian
groovy
Released (3.20210608.0ubuntu0.20.10.1)
hirsute
Released (3.20210608.0ubuntu0.21.04.1)
upstream Needs triage

bionic
Released (3.20210608.0ubuntu0.18.04.1)
focal
Released (3.20210608.0ubuntu0.20.04.1)
impish
Released (3.20210608.0ubuntu1)
jammy
Released (3.20210608.0ubuntu1)
trusty
Released (3.20210608.0ubuntu0.14.04.1+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
xenial
Released (3.20210608.0ubuntu0.16.04.1+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)

Severity score breakdown

Parameter Value
Base score 8.8
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Changed
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H