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Bug 1553402 - (CVE-2018-7858) CVE-2018-7858 QEMU: cirrus: OOB access when updating VGA display
CVE-2018-7858 QEMU: cirrus: OOB access when updating VGA display
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20180308,repor...
: Security
Depends On: 1553403 1553689 1553404 1553667 1553668 1553669 1553670 1553671 1553672 1553673 1553674 1553675 1553690 1566874 1566878 1567913
Blocks: 1549764
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Reported: 2018-03-08 14:38 EST by Prasad J Pandit
Modified: 2018-09-23 22:49 EDT (History)
39 users (show)

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External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2018:1369 None None None 2018-05-10 12:05 EDT
Red Hat Product Errata RHSA-2018:1416 None None None 2018-05-14 10:37 EDT
Red Hat Product Errata RHSA-2018:2162 None None None 2018-07-10 13:52 EDT

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Description Prasad J Pandit 2018-03-08 14:38:21 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 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 14:39:05 EST 
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 04:53:23 EST 
Acknowledgments:

Name: Ross Lagerwall (Citrix.com)
Comment 7 errata-xmlrpc 2018-05-10 12:04:48 EDT 
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 10:36:53 EDT 
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 00:50:20 EDT 
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 13:52:19 EDT 
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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