Is CVE-2019-3840 in the CISA KEV catalog?

No. CVE-2019-3840 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2019-3840?

CVE-2019-3840 has a CVSS v3 base score of 5.8 (MEDIUM).

What is the EPSS score for CVE-2019-3840?

CVE-2019-3840 has an EPSS score of 1.51% (71th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2019-3840?

Upgrade libvirt on debian 11 to 5.0.0-1 or later. Fixes are available for 6 affected products.

CVE & CISA-KEV Catalog

CVE-2019-3840

MEDIUMEPSS 71th pctl

5.8

CVSS v3

NVD

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.

CWE-476NULL Pointer Dereference

How to fix

Remediation Available

libvirtDebian

Fixed in:5.0.0-1CVE-2019-3840

libvirtUbuntu

Fixed in:1.3.1-1ubuntu10.25USN-3909-1

Fixed in:4.0.0-1ubuntu8.8USN-3909-1

libvirt-binUbuntu

Fixed in:1.3.1-1ubuntu10.25USN-3909-1

libvirt-clientsUbuntu

Fixed in:4.0.0-1ubuntu8.8USN-3909-1

libvirt-daemonUbuntu

Fixed in:4.0.0-1ubuntu8.8USN-3909-1

libvirt0Ubuntu

Fixed in:1.3.1-1ubuntu10.25USN-3909-1

Fixed in:4.0.0-1ubuntu8.8USN-3909-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredLow

User InteractionRequired

ScopeChanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:N/A:H

Exploit Intelligence

1.51%probability of exploitation in 30 days

71stpercentile

Elevated risk: more likely to be exploited than 71% of all known CVEs.

References

Patch1

bugzilla.redhat.com

Exploit2

Third-Party Advisory2

Other references2

Related Vulnerabilities

Other CWE-476 (NULL Pointer Dereference) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-21758	High	7.5	92%	-	Fix
CVE-2023-21547	High	7.5	88%	-	Fix
CVE-2014-3470	Medium	4.3	86%	-	Fix
CVE-2021-44224	High	8.2	82%	-	Fix
CVE-2016-0742	High	7.5	82%	-	Fix
CVE-2009-1386	Medium	5.0	80%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.