Bug 1686783 (CVE-2018-12181)

Summary:	CVE-2018-12181 edk2: Stack buffer overflow with corrupted BMP
Product:	[Other] Security Response	Reporter:	Andrej Nemec <anemec>
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, 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:	A stack-based buffer overflow was discovered in edk2 when the HII database contains a Bitmap that claims to be 4-bit or 8-bit per pixel, but the palette contains more than 16(2^4) or 256(2^8) colors.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-08-06 13:22:03 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:	1686785, 1686784, 1691478, 1691479
Bug Blocks:	1686786

Description Andrej Nemec 2019-03-08 10:07:15 UTC

A stack buffer overflow was found in edk2 when the HII database contains a Bitmap who claims as 4-bit or 8-bit per pixel, but the palette contains more than 16(2^4) or 256(2^8) colors.

Upstream issue:

https://bugzilla.tianocore.org/show_bug.cgi?id=1135

References:

https://lists.01.org/pipermail/edk2-devel/2019-March/037626.html

Comment 1 Andrej Nemec 2019-03-08 10:08:46 UTC

Created edk2 tracking bugs for this issue:

Affects: epel-all [bug 1686785]
Affects: fedora-all [bug 1686784]

Comment 3 Riccardo Schirone 2019-03-20 14:38:30 UTC

Upstream patches:
https://github.com/tianocore/edk2/commit/ffe5f7a6b4e978dffbe1df228963adc914451106
https://github.com/tianocore/edk2/commit/89910a39dcfd788057caa5d88b7e76e112d187b5

Comment 7 errata-xmlrpc 2019-08-06 12:18:27 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2019:2125 https://access.redhat.com/errata/RHSA-2019:2125

Comment 8 Product Security DevOps Team 2019-08-06 13:22:03 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-2018-12181

Comment 9 errata-xmlrpc 2019-11-05 20:38:17 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2019:3338 https://access.redhat.com/errata/RHSA-2019:3338