SARA / Free Tools / CVE / CVE-2019-3840

CVE-2019-3840 — A NULL pointer dereference flaw was discovered in libvirt before version 5

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.

CVSS
5.8 MEDIUM
EPSS
0.71% (top 28.00%)
CWE
CWE-476
Published
2019-03-27T12:24:10.000Z
Last modified
2024-08-04T19:19:18.580Z
CVSS vector
CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:N/A:H

01What is this vulnerability?

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.

02Affected products

VendorProductVersions
The libvirt Projectlibvirt5.0.0

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

09References

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