Bug 1471638 (CVE-2017-11334)

Summary:	CVE-2017-11334 Qemu: exec: oob access during dma operation
Product:	[Other] Security Response	Reporter:	Prasad Pandit <ppandit>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	ailan, amit, apevec, areis, ayoung, berrange, cfergeau, chrisw, cvsbot-xmlrpc, ddepaula, drjones, dwmw2, imammedo, itamar, jen, jjoyce, jschluet, kbasil, knoel, lhh, lpeer, markmc, m.a.young, mburns, mkenneth, mrezanin, mst, pbonzini, ppandit, rbryant, rjones, rkrcmar, robinlee.sysu, sclewis, slinaber, srevivo, tdecacqu, virt-maint, virt-maint, vkuznets, xen-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:	Quick Emulator (QEMU), compiled with qemu_map_ram_ptr to access guests' RAM block area, is vulnerable to an OOB r/w access issue. The crash can occur if a privileged user inside a guest conducts certain DMA operations, resulting in a DoS.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-08 03:16:39 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:	1471639, 1471640, 1471641, 1471642, 1471643, 1471644, 1471645, 1471646, 1471647, 1471648, 1472185, 1474625, 1520683
Bug Blocks:	1470243, 1520687

Description Prasad Pandit 2017-07-17 07:18:14 UTC

Qemu emulator built to use 'qemu_map_ram_ptr' to access guests' ram block area
is vulnerable to a OOB r/w access issue. It could occur during a DMA operation.

A privileged user inside guest could use this flaw to crash the guest instance
resulting in DoS.

Upstream patch:
---------------
  -> https://git.qemu.org/?p=qemu.git;a=commitdiff;h=04bf2526ce87f21b32c9acba1c5518708c243ad0

Reference:
----------
  -> http://www.openwall.com/lists/oss-security/2017/07/17/4

Comment 1 Prasad Pandit 2017-07-17 07:18:47 UTC

Acknowledgments:

Name: Alex

Comment 2 Prasad Pandit 2017-07-17 07:20:29 UTC

Created xen tracking bugs for this issue:

Affects: fedora-all [bug 1471640]

Comment 3 Prasad Pandit 2017-07-17 07:20:48 UTC

Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1471639]

Comment 12 errata-xmlrpc 2017-11-30 20:33:29 UTC

This issue has been addressed in the following products:

  RHEV 4.X RHEV-H and Agents for RHEL-7

Via RHSA-2017:3369 https://access.redhat.com/errata/RHSA-2017:3369

Comment 16 errata-xmlrpc 2017-12-14 22:14:27 UTC

This issue has been addressed in the following products:

  Red Hat OpenStack Platform 8.0 (Liberty)

Via RHSA-2017:3471 https://access.redhat.com/errata/RHSA-2017:3471

Comment 17 errata-xmlrpc 2017-12-14 22:17:31 UTC

This issue has been addressed in the following products:

  Red Hat OpenStack Platform 9.0 (Mitaka)

Via RHSA-2017:3470 https://access.redhat.com/errata/RHSA-2017:3470

Comment 18 errata-xmlrpc 2017-12-14 22:19:35 UTC

This issue has been addressed in the following products:

  Red Hat OpenStack Platform 11.0 (Ocata)

Via RHSA-2017:3466 https://access.redhat.com/errata/RHSA-2017:3466

Comment 19 errata-xmlrpc 2017-12-14 22:21:22 UTC

This issue has been addressed in the following products:

  Red Hat OpenStack Platform 10.0 (Newton)

Via RHSA-2017:3474 https://access.redhat.com/errata/RHSA-2017:3474

Comment 20 errata-xmlrpc 2017-12-14 22:23:27 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux OpenStack Platform 7.0 (Kilo) for RHEL 7

Via RHSA-2017:3472 https://access.redhat.com/errata/RHSA-2017:3472

Comment 21 errata-xmlrpc 2017-12-14 22:25:14 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno) for RHEL 7

Via RHSA-2017:3473 https://access.redhat.com/errata/RHSA-2017:3473