Bug 1553402 (CVE-2018-7858) - CVE-2018-7858 QEMU: cirrus: OOB access when updating VGA display
Summary: CVE-2018-7858 QEMU: cirrus: OOB access when updating VGA display
Status: NEW
Alias: CVE-2018-7858
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard: impact=moderate,public=20180308,repor...
Keywords: Security
Depends On: 1553403 1553689 1553404 1553667 1553668 1553669 1553670 1553671 1553672 1553673 1553674 1553675 1553690 1566874 1566878 1567913
Blocks: 1549764
TreeView+ depends on / blocked
 
Reported: 2018-03-08 19:38 UTC by Prasad J Pandit
Modified: 2018-09-24 02:49 UTC (History)
39 users (show)

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Clone Of:
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Last Closed:


Attachments (Terms of Use)


External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2018:1369 None None None 2018-05-10 16:05 UTC
Red Hat Product Errata RHSA-2018:1416 None None None 2018-05-14 14:37 UTC
Red Hat Product Errata RHSA-2018:2162 None None None 2018-07-10 17:52 UTC

Description Prasad J Pandit 2018-03-08 19:38:21 UTC
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 updating
VGA display, after guest has adjusted the display dimensions.

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

Upstream patch:
---------------
  -> https://lists.nongnu.org/archive/html/qemu-devel/2018-03/msg02174.html

Reference:
----------
  -> http://www.openwall.com/lists/oss-security/2018/03/09/1

Comment 1 Prasad J Pandit 2018-03-08 19:39:05 UTC
Created xen tracking bugs for this issue:

Affects: fedora-all [bug 1553403]


Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1553404]

Comment 3 Prasad J Pandit 2018-03-09 09:53:23 UTC
Acknowledgments:

Name: Ross Lagerwall (Citrix.com)

Comment 7 errata-xmlrpc 2018-05-10 16:04:48 UTC
This issue has been addressed in the following products:

  Red Hat Virtualization 4 for RHEL-7

Via RHSA-2018:1369 https://access.redhat.com/errata/RHSA-2018:1369

Comment 8 errata-xmlrpc 2018-05-14 14:36:53 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2018:1416 https://access.redhat.com/errata/RHSA-2018:1416

Comment 9 Joshua Padman 2018-06-07 04:50:20 UTC
This issue has been addressed in the following products:

  Red Hat OpenStack Platform 8
Via RHSA-2018:1646 https://access.redhat.com/errata/RHSA-2018:1646

  Red Hat OpenStack Platform 9
Via RHSA-2018:1645 https://access.redhat.com/errata/RHSA-2018:1645

  Red Hat OpenStack Platform 10
Via RHSA-2018:1644 https://access.redhat.com/errata/RHSA-2018:1644

  Red Hat OpenStack Platform 12
Via RHSA-2018:1643 https://access.redhat.com/errata/RHSA-2018:1643

Comment 10 errata-xmlrpc 2018-07-10 17:52:19 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2018:2162 https://access.redhat.com/errata/RHSA-2018:2162


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