oss-security - CVE-2019-8934 QEMU: ppc64: sPAPR emulator leaks the host hardware identity

Follow @Openwall on Twitter for new release announcements and other news

[<prev] [next>] [day] [month] [year] [list]

Date: Thu, 21 Feb 2019 13:36:45 +0530 (IST)
From: P J P <ppandit@...hat.com>
To: oss security list <oss-security@...ts.openwall.com>
Subject: CVE-2019-8934 QEMU: ppc64: sPAPR emulator leaks the host hardware
 identity

   Hello,

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

CVE-2019-8934 assigned via https://cveform.mitre.org/

Thank you.
--
Prasad J Pandit / Red Hat Product Security Team
47AF CE69 3A90 54AA 9045 1053 DD13 3D32 FE5B 041F

Please check out the Open Source Software Security Wiki, which is counterpart to this mailing list.

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.