NULL pointer dereference in libvirt - CVE-2019-3840
Published: April 9, 2019
Vulnerability identifier: #VU18154
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2019-3840
CWE-ID: CWE-476
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vendor: libvirt.org
Affected software:
libvirt
libvirt
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dreference error in libvirt in the way it processes 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 (DoS).
How to mitigate CVE-2019-3840
Update to version 5.0.0.