EulerOS Virtualization 2.5.4 : kvm (EulerOS-SA-2019-1372)

high Nessus Plugin ID 124750

Synopsis

The remote EulerOS Virtualization host is missing a security update.

Description

According to the version of the kvm package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerability :

- A use-after-free vulnerability was found in the way the Linux kernel's KVM hypervisor implements its device control API. While creating a device via kvm_ioctl_create_device(), the device holds a reference to a VM object, later this reference is transferred to the caller's file descriptor table. If such file descriptor was to be closed, reference count to the VM object could become zero, potentially leading to a use-after-free issue. A user/process could use this flaw to crash the guest VM resulting in a denial of service issue or, potentially, gain privileged access to a system.(CVE-2019-6974)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected kvm package.

Plugin Details

Severity: High

ID: 124750

File Name: EulerOS_SA-2019-1372.nasl

Version: 1.6

Type: local

Family: Huawei Local Security Checks

Published: 5/10/2019

Updated: 1/6/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.3

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:huawei:euleros:kvm, cpe:/o:huawei:euleros:uvp:2.5.4

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/EulerOS/release, Host/EulerOS/rpm-list, Host/EulerOS/uvp_version

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/5/2019

Reference Information

CVE: CVE-2019-6974

Detections

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