CVE-2019-10168

Publication date 20 June 2019

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

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.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
libvirt	19.04 disco	Fixed 5.0.0-1ubuntu2.4
	18.10 cosmic	Fixed 4.6.0-2ubuntu3.8
	18.04 LTS bionic	Not affected
	16.04 LTS xenial	Not affected
	14.04 LTS trusty	Not affected

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
libvirt	Upstream: https://libvirt.org/git/?p=libvirt.git;a=commit;h=bf6c2830b6c338b1f5699b095df36f374777b291 Upstream: http://libvirt.org/git/?p=libvirt.git;a=commit;h=1ef98539a655109480628c91feac48c3c69675ef Upstream: http://libvirt.org/git/?p=libvirt.git;a=commit;h=890965e8943a8837b41c3c6f366135ccfef48fb3

Severity score breakdown

Parameter	Value
Base score	7.8 · High
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

References

Related Ubuntu Security Notices (USN)

USN-4047-1
libvirt vulnerabilities
8 July 2019