CVE-2019-3886

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2019-04-04 · updated 2026-06-17
Weakness: CWE-862

Description

An incorrect permissions check was discovered in libvirt 4.8.0 and above. The readonly permission was allowed to invoke APIs depending on the guest agent, which could lead to potentially disclosing unintended information or denial of service by causing libvirt to block.

Affected products

Fedoraproject Fedora: 29, 30
openSUSE Leap: 42.3
libvirt: from 4.8.0 before 5.3.0 — fixed in 5.3.0

How to fix

Upgrade to a fixed version: libvirt 5.3.0. Check the vendor advisory for mitigations.

References

http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00105.html
http://www.securityfocus.com/bid/107777
https://access.redhat.com/errata/RHBA-2019:3723
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3886
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CYMNKXAUBZCFBBPFH64FJPH5EJH4GSU2/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R5DHYIFECZ7BMVXK4EP4FDFZXK7I5MZH/
https://usn.ubuntu.com/4021-1/
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00105.html
http://www.securityfocus.com/bid/107777
https://access.redhat.com/errata/RHBA-2019:3723
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3886
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CYMNKXAUBZCFBBPFH64FJPH5EJH4GSU2/

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