Bug 2007434 (CVE-2019-11098)

Summary:	CVE-2019-11098 edk2: Insufficient input validation in MdeModulePkg may lead to privilege escalation
Product:	[Other] Security Response	Reporter:	Pedro Sampaio <psampaio>
Component:	vulnerability	Assignee:	Nobody <nobody>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	berrange, crobinso, kraxel, pbonzini, virt-maint, virt-maint
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	edk2-202008	Doc Type:	If docs needed, set a value
Doc Text:	An improper input validation flaw in the MdeModulePkg module of edk2 may allow an unauthenticated attacker with physical access to the system handled by edk2 to escalate his privileges and cause a denial of service or disclose information.	Story Points:	---
Clone Of:		Environment:
Last Closed:		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:	2007435, 2011199, 2011200
Bug Blocks:	2007436

Description Pedro Sampaio 2021-09-23 20:45:08 UTC

Insufficient input validation in MdeModulePkg in EDKII may allow an unauthenticated user to potentially enable escalation of privilege, denial of service and/or information disclosure via physical access.

References:

https://edk2-docs.gitbook.io/security-advisory/bootguard-toctou-vulnerability
https://bugzilla.tianocore.org/show_bug.cgi?id=1614

Comment 1 Pedro Sampaio 2021-09-23 20:49:00 UTC

Created edk2 tracking bugs for this issue:

Affects: epel-7 [bug 2007435]

Comment 3 Riccardo Schirone 2021-10-06 09:14:32 UTC

Current patches: https://bugzilla.tianocore.org/attachment.cgi?id=316