6.3
MEDIUM
CVE-2019-3840
QEMU libvirt NULL Pointer Dereference Denial of Service
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.

INFO

Published Date :

March 27, 2019, 1:29 p.m.

Last Modified :

Nov. 7, 2023, 3:10 a.m.

Remotely Exploitable :

Yes !

Impact Score :

4.0

Exploitability Score :

1.8
Affected Products

The following products are affected by CVE-2019-3840 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Opensuse leap
1 Redhat libvirt
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2019-3840.

URL Resource
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00101.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00105.html Mailing List Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2294
https://bugzilla.redhat.com/show_bug.cgi?id=1663051 Exploit Issue Tracking Third Party Advisory Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3840 Exploit Issue Tracking Patch Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TZRP2BRMI4RYFRPNFTTIAAUOGVN2ORP7/
https://www.redhat.com/archives/libvir-list/2019-January/msg00241.html Exploit Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2019-3840 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2019-3840 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TZRP2BRMI4RYFRPNFTTIAAUOGVN2ORP7/ [No types assigned]
    Removed Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/TZRP2BRMI4RYFRPNFTTIAAUOGVN2ORP7/
  • CVE Modified by [email protected]

    Oct. 09, 2019

    Action Type Old Value New Value
    Added CVSS V3 Red Hat, Inc. AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:N/A:H
    Added CWE Red Hat, Inc. CWE-476
  • CVE Modified by [email protected]

    Aug. 06, 2019

    Action Type Old Value New Value
    Added Reference https://access.redhat.com/errata/RHSA-2019:2294 [No Types Assigned]
  • CVE Modified by [email protected]

    May. 05, 2019

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/TZRP2BRMI4RYFRPNFTTIAAUOGVN2ORP7/ [No Types Assigned]
  • Modified Analysis by [email protected]

    May. 01, 2019

    Action Type Old Value New Value
    Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00101.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00101.html Mailing List, Third Party Advisory
    Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00105.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00105.html Mailing List, Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:* *cpe:2.3:o:opensuse:leap:42.3:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Apr. 29, 2019

    Action Type Old Value New Value
    Added Reference http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00105.html [No Types Assigned]
  • CVE Modified by [email protected]

    Apr. 29, 2019

    Action Type Old Value New Value
    Added Reference http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00101.html [No Types Assigned]
  • Initial Analysis by [email protected]

    Mar. 27, 2019

    Action Type Old Value New Value
    Added CVSS V2 (AV:N/AC:M/Au:S/C:N/I:N/A:P)
    Added CVSS V3 AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H
    Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1663051 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=1663051 Exploit, Issue Tracking, Third Party Advisory, Vendor Advisory
    Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3840 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3840 Exploit, Issue Tracking, Patch, Vendor Advisory
    Changed Reference Type https://www.redhat.com/archives/libvir-list/2019-January/msg00241.html No Types Assigned https://www.redhat.com/archives/libvir-list/2019-January/msg00241.html Exploit, Vendor Advisory
    Added CWE CWE-476
    Added CPE Configuration OR *cpe:2.3:a:redhat:libvirt:*:*:*:*:*:*:*:* versions up to (excluding) 5.0.0
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2019-3840 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2019-3840 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.22 }} -0.02%

score

0.60222

percentile

CVSS30 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability