CVE-2019-3840

Public Exploit

Description

A NULL pointer dereference flaw was discovered in libvirt before version 5.0.0 in the way it gets interface information through the QEMU agent. An attacker in a guest VM can use this flaw to crash libvirtd and cause a denial of service.

Category

5.8
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.73% Top 30%
Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory fedoraproject.org Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com
Affected: The libvirt Project libvirt
Published at:
Updated at:

References

Link Tags
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3840 patch exploit vendor advisory issue tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1663051 exploit vendor advisory third party advisory issue tracking
https://www.redhat.com/archives/libvir-list/2019-January/msg00241.html vendor advisory exploit
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00101.html vendor advisory mailing list third party advisory
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00105.html vendor advisory mailing list third party advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TZRP2BRMI4RYFRPNFTTIAAUOGVN2ORP7/ vendor advisory
https://access.redhat.com/errata/RHSA-2019:2294 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2019-3840?
CVE-2019-3840 has been scored as a medium severity vulnerability.
How to fix CVE-2019-3840?
To fix CVE-2019-3840, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-3840 being actively exploited in the wild?
It is possible that CVE-2019-3840 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2019-3840?
CVE-2019-3840 affects The libvirt Project libvirt.
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