Bug 1641450 (CVE-2017-5733)

Summary:	CVE-2017-5733 edk2: Privilege escalation via heap-based buffer overflow in MakeTable() function
Product:	[Other] Security Response	Reporter:	Sam Fowler <sfowler>
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, kraxel, lersek, pbonzini, philmd, 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:	2019-08-06 13:20:13 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:	1641452, 1641451, 1641453, 1666586
Bug Blocks:	1641438

Description Sam Fowler 2018-10-22 06:07:23 UTC

In EDK II, a vulnerability exists in BaseUefiDecompressLib.c, TianoCompress.c, and UEFI specification via a heap-based buffer overflow in the MakeTable() function. An authenticated attacker could exploit this via a crafted file to escalate privileges.


External Reference:

https://edk2-docs.gitbooks.io/security-advisory/content/edk-ii-tianocompress-bounds-checking-issues.html


Upstream Bug:

https://bugzilla.tianocore.org/show_bug.cgi?id=686

Comment 1 Sam Fowler 2018-10-22 06:08:29 UTC

Created edk2 tracking bugs for this issue:

Affects: epel-all [bug 1641452]
Affects: fedora-all [bug 1641451]

Comment 4 errata-xmlrpc 2019-08-06 12:18:02 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 5 Product Security DevOps Team 2019-08-06 13:20:13 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-2017-5733