Bug 1420484 – CVE-2017-2620 Qemu: display: cirrus: potential arbitrary code execution via cirrus_bitblt_cputovideo

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Bug 1420484 - (CVE-2017-2620, xsa209) CVE-2017-2620 Qemu: display: cirrus: potential arbitrary code execution via cirrus_bitblt_cputovideo

Summary:	CVE-2017-2620 Qemu: display: cirrus: potential arbitrary code execution via c...

Status:	NEW

Aliases:	CVE-2017-2620, xsa209

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	high Severity high
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=important,public=20170221,repo...
Keywords:	Security

Depends On:	1420485 1420486 1420487 1420488 1420489 1420490 1420492 1420493 1420494 1420495 1420496 1420497 1420498 1420499 1420500 1420501 1420502 1425419 1425420
Blocks:	1420460
	Show dependency tree / graph

Reported:	2017-02-08 14:55 EST by Prasad J Pandit
Modified:	2018-07-27 05:52 EDT (History)
CC List:	24 users (show)

See Also:
Fixed In Version:	qemu 2.8
Doc Type:	If docs needed, set a value
Doc Text:	Quick emulator (QEMU) built with the Cirrus CLGD 54xx VGA Emulator support is vulnerable to an out-of-bounds access issue. The issue could occur while copying VGA data in cirrus_bitblt_cputovideo. A privileged user inside guest could use this flaw to crash the QEMU process OR potentially execute arbitrary code on host with privileges of the QEMU process.
Story Points:	---
Clone Of:
Environment:
Last Closed:
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

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External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2017:0328	normal	SHIPPED_LIVE	Important: qemu-kvm-rhev security update	2017-02-27 23:12:53 EST
Red Hat Product Errata	RHSA-2017:0329	normal	SHIPPED_LIVE	Important: qemu-kvm-rhev security update	2017-02-27 23:12:47 EST
Red Hat Product Errata	RHSA-2017:0330	normal	SHIPPED_LIVE	Important: qemu-kvm-rhev security update	2017-02-27 23:12:41 EST
Red Hat Product Errata	RHSA-2017:0331	normal	SHIPPED_LIVE	Important: qemu-kvm-rhev security update	2017-02-27 23:12:35 EST
Red Hat Product Errata	RHSA-2017:0332	normal	SHIPPED_LIVE	Important: qemu-kvm-rhev security update	2017-02-27 23:12:29 EST
Red Hat Product Errata	RHSA-2017:0333	normal	SHIPPED_LIVE	Important: qemu-kvm-rhev security update	2017-02-27 23:12:23 EST
Red Hat Product Errata	RHSA-2017:0334	normal	SHIPPED_LIVE	Important: qemu-kvm-rhev security update	2017-02-27 23:12:16 EST
Red Hat Product Errata	RHSA-2017:0350	normal	SHIPPED_LIVE	Important: qemu-kvm-rhev security and bug fix update	2017-03-01 07:59:14 EST
Red Hat Product Errata	RHSA-2017:0351	normal	SHIPPED_LIVE	Important: qemu-kvm-rhev security update	2017-03-01 07:59:05 EST
Red Hat Product Errata	RHSA-2017:0352	normal	SHIPPED_LIVE	Important: qemu-kvm security update	2017-03-01 09:40:28 EST
Red Hat Product Errata	RHSA-2017:0396	normal	SHIPPED_LIVE	Important: qemu-kvm security and bug fix update	2017-03-02 17:07:28 EST
Red Hat Product Errata	RHSA-2017:0454	normal	SHIPPED_LIVE	Important: kvm security update	2017-03-07 11:02:09 EST

Groups: None (edit)

Description Prasad J Pandit 2017-02-08 14:55:23 EST

Quick emulator(Qemu) built with the Cirrus CLGD 54xx VGA Emulator support is
vulnerable to an out-of-bounds access issue. It could occur while copying
VGA data in cirrus_bitblt_cputovideo.

A privileged user inside guest could use this flaw to crash the Qemu process
resulting in DoS OR potentially execute arbitrary code on the host with
privileges of Qemu process on the host.

Upstream patch
--------------
  -> https://lists.gnu.org/archive/html/qemu-devel/2017-02/msg04700.html

Reference:
----------
  -> http://www.openwall.com/lists/oss-security/2017/02/21/1

Comment 7 Prasad J Pandit 2017-02-21 07:08:30 EST

Created xen tracking bugs for this issue:

Affects: fedora-all [bug 1425420]

Comment 8 Prasad J Pandit 2017-02-21 07:08:44 EST

Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1425419]

Comment 9 Adam Mariš 2017-02-22 11:03:05 EST

External References:

https://xenbits.xen.org/xsa/advisory-209.html

Comment 10 errata-xmlrpc 2017-02-27 18:14:45 EST

This issue has been addressed in the following products:

  Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 6

Via RHSA-2017:0334 https://rhn.redhat.com/errata/RHSA-2017-0334.html

Comment 11 errata-xmlrpc 2017-02-27 18:16:02 EST

This issue has been addressed in the following products:

  Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 7

Via RHSA-2017:0333 https://rhn.redhat.com/errata/RHSA-2017-0333.html

Comment 12 errata-xmlrpc 2017-02-27 18:17:20 EST

This issue has been addressed in the following products:

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

Via RHSA-2017:0332 https://rhn.redhat.com/errata/RHSA-2017-0332.html

Comment 13 errata-xmlrpc 2017-02-27 18:18:37 EST

This issue has been addressed in the following products:

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

Via RHSA-2017:0331 https://rhn.redhat.com/errata/RHSA-2017-0331.html

Comment 14 errata-xmlrpc 2017-02-27 18:20:01 EST

This issue has been addressed in the following products:

  Red Hat OpenStack Platform 8.0 (Liberty)

Via RHSA-2017:0330 https://rhn.redhat.com/errata/RHSA-2017-0330.html

Comment 15 errata-xmlrpc 2017-02-27 18:21:24 EST

This issue has been addressed in the following products:

  Red Hat OpenStack Platform 9.0 (Mitaka)

Via RHSA-2017:0329 https://rhn.redhat.com/errata/RHSA-2017-0329.html

Comment 16 errata-xmlrpc 2017-02-27 18:22:36 EST

This issue has been addressed in the following products:

  Red Hat OpenStack Platform 10.0 (Newton)

Via RHSA-2017:0328 https://rhn.redhat.com/errata/RHSA-2017-0328.html

Comment 17 errata-xmlrpc 2017-03-01 02:59:29 EST

This issue has been addressed in the following products:

  RHEV 3.X Hypervisor and Agents for RHEL-6

Via RHSA-2017:0351 https://rhn.redhat.com/errata/RHSA-2017-0351.html

Comment 18 errata-xmlrpc 2017-03-01 03:02:35 EST

This issue has been addressed in the following products:

  RHEV 3.X Hypervisor and Agents for RHEL-7
  RHEV 4.X RHEV-H and Agents for RHEL-7

Via RHSA-2017:0350 https://rhn.redhat.com/errata/RHSA-2017-0350.html

Comment 19 errata-xmlrpc 2017-03-01 04:40:40 EST

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2017:0352 https://rhn.redhat.com/errata/RHSA-2017-0352.html

Comment 20 errata-xmlrpc 2017-03-02 12:29:20 EST

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2017:0396 https://rhn.redhat.com/errata/RHSA-2017-0396.html

Comment 21 errata-xmlrpc 2017-03-07 06:02:47 EST

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 5

Via RHSA-2017:0454 https://rhn.redhat.com/errata/RHSA-2017-0454.html

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