Bug 1860978 (CVE-2020-15705)

Summary:	CVE-2020-15705 grub2: Fail kernel validation without shim protocol
Product:	[Other] Security Response	Reporter:	Marco Benatto <mbenatto>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	bootloader-eng-team, fmartine, lkundrak, pjones, security-response-team
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	grub 2.06	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-07-29 19:28:11 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1860997, 1860998, 1860999, 1861000, 1861002, 1861003, 1861004, 1861005, 1861006, 1861007, 1861008, 1863021
Bug Blocks:	1852004

Description Marco Benatto 2020-07-27 15:23:06 UTC

If certificates that signed grub are installed into db, grub can be booted directly. It will then boot any kernel without signature validation. The booted kernel will think it was booted in secureboot mode and will implement lockdown, yet it could have been tampered.

Comment 1 errata-xmlrpc 2020-07-29 18:30:52 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2020:3216 https://access.redhat.com/errata/RHSA-2020:3216

Comment 2 Product Security DevOps Team 2020-07-29 19:28:11 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2020-15705

Comment 3 errata-xmlrpc 2020-07-29 19:34:09 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:3217 https://access.redhat.com/errata/RHSA-2020:3217

Comment 4 errata-xmlrpc 2020-07-29 19:38:12 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.1 Extended Update Support

Via RHSA-2020:3223 https://access.redhat.com/errata/RHSA-2020:3223

Comment 5 errata-xmlrpc 2020-07-29 20:14:50 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions

Via RHSA-2020:3227 https://access.redhat.com/errata/RHSA-2020:3227

Comment 6 errata-xmlrpc 2020-08-03 10:57:12 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.2 Advanced Update Support

Via RHSA-2020:3273 https://access.redhat.com/errata/RHSA-2020:3273

Comment 7 errata-xmlrpc 2020-08-03 11:14:15 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.4 Advanced Update Support
  Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions
  Red Hat Enterprise Linux 7.4 Telco Extended Update Support

Via RHSA-2020:3275 https://access.redhat.com/errata/RHSA-2020:3275

Comment 8 errata-xmlrpc 2020-08-03 11:52:47 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.6 Extended Update Support

Via RHSA-2020:3271 https://access.redhat.com/errata/RHSA-2020:3271

Comment 9 errata-xmlrpc 2020-08-03 12:02:46 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.3 Advanced Update Support
  Red Hat Enterprise Linux 7.3 Update Services for SAP Solutions
  Red Hat Enterprise Linux 7.3 Telco Extended Update Support

Via RHSA-2020:3276 https://access.redhat.com/errata/RHSA-2020:3276

Comment 10 errata-xmlrpc 2020-08-03 12:06:05 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.7 Extended Update Support

Via RHSA-2020:3274 https://access.redhat.com/errata/RHSA-2020:3274

Comment 11 Marco Benatto 2020-08-03 13:45:54 UTC

Created grub2 tracking bugs for this issue:

Affects: fedora-all [bug 1863021]