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CVE-2019-10168

Published: 20 June 2019

The virConnectBaselineHypervisorCPU() and virConnectCompareHypervisorCPU() libvirt APIs, 4.x.x before 4.10.1 and 5.x.x before 5.4.1, accept an "emulator" argument to specify the program providing emulation for a domain. Since v1.2.19, libvirt will execute that program to probe the domain's capabilities. Read-only clients could specify an arbitrary path for this argument, causing libvirtd to execute a crafted executable with its own privileges.

Priority

Medium

Cvss 3 Severity Score

7.8

Score breakdown

Status

Package Release Status
libvirt
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(code not present)
cosmic
Released (4.6.0-2ubuntu3.8)
disco
Released (5.0.0-1ubuntu2.4)
trusty Not vulnerable
(code not present)
upstream Needs triage

xenial Not vulnerable
(code not present)
Patches:
upstream: https://libvirt.org/git/?p=libvirt.git;a=commit;h=bf6c2830b6c338b1f5699b095df36f374777b291 (5.4)
upstream: http://libvirt.org/git/?p=libvirt.git;a=commit;h=1ef98539a655109480628c91feac48c3c69675ef (5.0)
upstream: http://libvirt.org/git/?p=libvirt.git;a=commit;h=890965e8943a8837b41c3c6f366135ccfef48fb3 (4.6)

Severity score breakdown

Parameter Value
Base score 7.8
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H