Bug 1671432 (CVE-2019-7146)

Summary:	CVE-2019-7146 elfutils: buffer over-read in the ebl_object_note function in eblobjnote.c in libebl
Product:	[Other] Security Response	Reporter:	Laura Pardo <lpardo>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	abhgupta, dbaker, drepper, jakub, jokerman, mcermak, mjw, mnewsome, ohudlick, rschiron, sthangav, tborcin, trankin
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:	2019-11-06 00:52:06 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:	1671433, 1680021
Bug Blocks:	1671448

Description Laura Pardo 2019-01-31 15:19:20 UTC

In elfutils 0.175, there is a buffer over-read in the ebl_object_note function in eblobjnote.c in libebl. Remote attackers could leverage this vulnerability to cause a denial-of-service via a crafted elf file.


References:
https://sourceware.org/bugzilla/show_bug.cgi?id=24075
https://sourceware.org/bugzilla/show_bug.cgi?id=24081

Upstream Patch:
https://sourceware.org/git/?p=elfutils.git;a=commit;h=012018907ca05eb0ab51d424a596ef38fc87cae1
https://sourceware.org/git/?p=elfutils.git;a=commit;h=cd7ded3df43f655af945c869976401a602e46fcd

Comment 1 Laura Pardo 2019-01-31 15:19:42 UTC

Created elfutils tracking bugs for this issue:

Affects: fedora-all [bug 1671433]

Comment 4 Dave Baker 2019-02-28 16:24:27 UTC

From upstream: https://sourceware.org/bugzilla/show_bug.cgi?id=24075 
- This code was introduced in 0.175 and not present in 0.174.
- Does not affect openshift-online-3

Comment 5 errata-xmlrpc 2019-11-05 21:13:33 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2019:3575 https://access.redhat.com/errata/RHSA-2019:3575

Comment 6 Product Security DevOps Team 2019-11-06 00:52:06 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-2019-7146