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CVE-2016-1714

Published: 12 January 2016

The (1) fw_cfg_write and (2) fw_cfg_read functions in hw/nvram/fw_cfg.c in QEMU before 2.4, when built with the Firmware Configuration device emulation support, allow guest OS users with the CAP_SYS_RAWIO privilege to cause a denial of service (out-of-bounds read or write access and process crash) or possibly execute arbitrary code via an invalid current entry value in a firmware configuration.

Notes

AuthorNote
sbeattie
affects qemu 2.3 and earlier

Priority

Medium

Cvss 3 Severity Score

8.1

Score breakdown

Status

Package Release Status
qemu
Launchpad, Ubuntu, Debian
precise Does not exist

trusty
Released (2.0.0+dfsg-2ubuntu1.22)
upstream Needs triage

vivid Ignored
(end of life)
wily
Released (1:2.3+dfsg-5ubuntu9.2)
Patches:
other: https://lists.gnu.org/archive/html/qemu-devel/2016-01/msg00428.html
vendor: https://git.centos.org/blob/rpms!qemu-kvm.git/95f32b8c9b6232aa8ecb8e7d520ac1a3f1290e9b/SOURCES!kvm-fw_cfg-add-check-to-validate-current-entry-value-CVE.patch
qemu-kvm
Launchpad, Ubuntu, Debian
precise
Released (1.0+noroms-0ubuntu14.27)
trusty Does not exist

upstream Needs triage

vivid Does not exist

wily Does not exist

Severity score breakdown

Parameter Value
Base score 8.1
Attack vector Local
Attack complexity High
Privileges required None
User interaction None
Scope Changed
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H