Bug 1671446 (CVE-2019-7150)

Summary:	CVE-2019-7150 elfutils: segmentation fault in elf64_xlatetom in libelf/elf32_xlatetom.c
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, mjw, mnewsome, ohudlick, 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:	2019-08-06 13:21:40 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:	1680044, 1680045, 1680046, 1680047, 1680048
Bug Blocks:	1671448

Description Laura Pardo 2019-01-31 15:40:27 UTC

An issue was discovered in elfutils 0.175. A segmentation fault can occur in the function elf64_xlatetom in libelf/elf32_xlatetom.c, due to dwfl_segment_report_module not checking whether the dyn data read from a core file is truncated. A crafted input can cause a program crash, leading to denial-of-service, as demonstrated by eu-stack.


References:
https://sourceware.org/bugzilla/show_bug.cgi?id=24103
https://sourceware.org/ml/elfutils-devel/2019-q1/msg00070.html

Upstream Patch:
https://sourceware.org/git/?p=elfutils.git;a=commit;h=da5c5336a1eaf519de246f7d9f0f5585e1d4ac59

Comment 2 Riccardo Schirone 2019-02-22 15:43:46 UTC

Created elfutils tracking bugs for this issue:

Affects: fedora-all [bug 1680044]

Comment 4 Mark Wielaard 2019-02-22 23:05:00 UTC

The title and description are slightly unfortunate since the issue doesn't have anything to do with the elf64_xlatetom function. That function just happens to be the function that accesses some undefined memory (indirectly through a memmove call).

A better description would be "eu-stack can crash when reading a corrupt or partial core file".

Comment 5 Dave Baker 2019-03-06 16:05:08 UTC

Flagging openshift-online-3 as NOTAFFECTED since binaries ship as part of RHEL.

Comment 6 errata-xmlrpc 2019-08-06 12:27:13 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2019:2197 https://access.redhat.com/errata/RHSA-2019:2197

Comment 7 Product Security DevOps Team 2019-08-06 13:21:40 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-2019-7150

Comment 8 errata-xmlrpc 2019-11-05 21:13:41 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