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CVE-2018-20815

Published: 31 December 2018

In QEMU 3.1.0, load_device_tree in device_tree.c calls the deprecated load_image function, which has a buffer overflow risk.

From the Ubuntu Security Team

Kurtis Miller discovered that a buffer overflow existed in QEMU when loading a device tree blob. A local attacker could use this to execute arbitrary code.

Priority

Medium

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package Release Status
qemu
Launchpad, Ubuntu, Debian
bionic
Released (1:2.11+dfsg-1ubuntu7.13)
cosmic
Released (1:2.12+dfsg-3ubuntu8.7)
groovy
Released (1:3.1+dfsg-2ubuntu4)
hirsute
Released (1:3.1+dfsg-2ubuntu4)
disco
Released (1:3.1+dfsg-2ubuntu3.1)
eoan
Released (1:3.1+dfsg-2ubuntu4)
focal
Released (1:3.1+dfsg-2ubuntu4)
trusty
Released (2.0.0+dfsg-2ubuntu1.46)
upstream
Released (91:3.1+dfsg-7)
xenial
Released (1:2.5+dfsg-5ubuntu10.38)
Patches:
upstream: https://git.qemu.org/?p=qemu.git;a=commit;h=da885fe1ee8b4589047484bd7fa05a4905b52b17
qemu-kvm
Launchpad, Ubuntu, Debian
groovy Does not exist

hirsute Does not exist

bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

Severity score breakdown

Parameter Value
Base score 9.8
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H