Bug 1668022 (CVE-2019-8934) - CVE-2019-8934 QEMU: ppc64: sPAPR emulator leaks the host hardware identity
Summary: CVE-2019-8934 QEMU: ppc64: sPAPR emulator leaks the host hardware identity
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2019-8934
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1679459 1679460 1679461 1679463 1679464 1679465 1679822 1679823 1679824 1793215
Blocks: 1668024
TreeView+ depends on / blocked
 
Reported: 2019-01-21 17:40 UTC by Laura Pardo
Modified: 2021-10-27 10:54 UTC (History)
34 users (show)

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Last Closed: 2021-10-27 10:54:53 UTC

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Description Laura Pardo 2019-01-21 17:40:34 UTC 
It was found that the KVM PPC64 emulator for the sPAPR machine leaks the host
hardware identity to all running guests. The sPAPAR(hw/ppc/spapr.c) emulator
populates the device tree for the guest with two fields "host-serial"
and "host-model". The values for these fields are taken via hypervisor from
the host device tree data exposed in "/proc/device-tree/system-id"
and "/proc/device-tree/model" file respectively.

Upstream patch:
---------------
  -> https://lists.gnu.org/archive/html/qemu-devel/2019-02/msg04821.html

Reference:
----------
  -> https://www.openwall.com/lists/oss-security/2019/02/21/1
Comment 1 Laura Pardo 2019-01-21 20:14:23 UTC 
Acknowledgments:

Name: Daniel P. Berrangé (Red Hat)
Comment 4 Prasad J Pandit 2019-02-21 08:03:36 UTC 
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1679463]
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