Bug 1758620 (CVE-2019-14563)

Summary:	CVE-2019-14563 edk2: numeric truncation in MdeModulePkg/PiDxeS3BootScriptLib
Product:	[Other] Security Response	Reporter:	Riccardo Schirone <rschiron>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	berrange, crobinso, kraxel, lersek, pbonzini, philmd, security-response-team, virt-maint, virt-maint
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-04-28 16:34:22 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:	1801259, 1801260, 1801273, 1801274
Bug Blocks:	1737084

Description Riccardo Schirone 2019-10-04 15:53:33 UTC

It is possible for S3BootScriptLib APIs to cause numeric truncations that may lead to S3 boot script entry with wrong size being returned. This may lead to memory corruption.

Affected functions:
S3BootScriptSaveIoWrite
S3BootScriptSaveMemWrite
S3BootScriptSavePciCfgWrite
S3BootScriptSavePciCfg2Write
S3BootScriptSaveSmbusExecute
S3BootScriptSaveInformation
S3BootScriptSaveInformationAsciiString
S3BootScriptLabel (happen in S3BootScriptLabelInternal())

Comment 5 Riccardo Schirone 2020-02-10 14:27:04 UTC

Upstream fix:
https://github.com/tianocore/edk2/commit/322ac05f8bbc1bce066af1dabd1b70ccdbe28891

Comment 6 Riccardo Schirone 2020-02-10 14:28:48 UTC

Created edk2 tracking bugs for this issue:

Affects: epel-all [bug 1801260]
Affects: fedora-all [bug 1801259]

Comment 9 Riccardo Schirone 2020-02-10 14:44:43 UTC

Upstream bug:
https://bugzilla.tianocore.org/show_bug.cgi?id=2001

Comment 10 errata-xmlrpc 2020-04-28 15:43:23 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2020:1712 https://access.redhat.com/errata/RHSA-2020:1712

Comment 11 Product Security DevOps Team 2020-04-28 16:34:22 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-2019-14563