Vulnerability Details : CVE-2019-3840
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.
Vulnerability category: Memory CorruptionDenial of service
Products affected by CVE-2019-3840
- cpe:2.3:a:redhat:libvirt:*:*:*:*:*:*:*:*
- cpe:2.3:o:opensuse:leap:42.3:*:*:*:*:*:*:*
- cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-3840
0.22%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 60 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-3840
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
3.5
|
LOW | AV:N/AC:M/Au:S/C:N/I:N/A:P |
6.8
|
2.9
|
NIST | |
|
6.3
|
MEDIUM | CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H |
1.8
|
4.0
|
NIST | |
|
5.8
|
MEDIUM | CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:N/A:H |
1.3
|
4.0
|
Red Hat, Inc. |
CWE ids for CVE-2019-3840
-
The product dereferences a pointer that it expects to be valid but is NULL.Assigned by:
- nvd@nist.gov (Primary)
- secalert@redhat.com (Secondary)
References for CVE-2019-3840
-
https://www.redhat.com/archives/libvir-list/2019-January/msg00241.html
[libvirt] [PATCH] qemu: require reply from guest agent in qemuAgentGetInExploit;Vendor Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TZRP2BRMI4RYFRPNFTTIAAUOGVN2ORP7/
[SECURITY] Fedora 29 Update: libvirt-4.7.0-2.fc29 - package-announce - Fedora Mailing-Lists
-
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00105.html
[security-announce] openSUSE-SU-2019:1294-1: moderate: Security update fMailing List;Third Party Advisory
-
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00101.html
[security-announce] openSUSE-SU-2019:1288-1: important: Security updateMailing List;Third Party Advisory
-
https://access.redhat.com/errata/RHSA-2019:2294
RHSA-2019:2294 - Security Advisory - Red Hat Customer Portal
-
https://bugzilla.redhat.com/show_bug.cgi?id=1663051
1663051 – libvirtd encountered sigsegv due to null pointer in virJSONValueObjectHasKey()Exploit;Issue Tracking;Third Party Advisory;Vendor Advisory
-
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3840
1665228 – (CVE-2019-3840) CVE-2019-3840 libvirt: NULL pointer dereference after running qemuAgentCommand in qemuAgentGetInterfaces functionExploit;Issue Tracking;Patch;Vendor Advisory
Jump to