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NULL Pointer Dereference Affecting libvirt-daemon-driver-qemu package, versions <0:4.5.0-23.amzn2

Severity

 Recommended
0.0
medium
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.22% (61st percentile)

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  • Snyk IDSNYK-AMZN2-LIBVIRTDAEMONDRIVERQEMU-1676690
  • published27 Sept 2021
  • disclosed27 Mar 2019
Report a new vulnerability Found a mistake?

Introduced: 27 Mar 2019

CVE-2019-3840  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 libvirt-daemon-driver-qemu to version 0:4.5.0-23.amzn2 or higher.
This issue was patched in ALAS2-2019-1361.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libvirt-daemon-driver-qemu package and not the libvirt-daemon-driver-qemu package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

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.