Detections
Analytics
CentOS 7 : kernel (CESA-2021:3801)
high Nessus Plugin ID 155547
Language:
Synopsis
The remote CentOS Linux host is missing one or more security updates.Description
The remote CentOS Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the CESA-2021:3801 advisory.- kernel: Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks (CVE-2021-22543)
- kernel: SVM nested virtualization issue in KVM (AVIC support) (CVE-2021-3653)
- kernel: SVM nested virtualization issue in KVM (VMLOAD/VMSAVE) (CVE-2021-3656)
- kernel: powerpc: KVM guest OS users can cause host OS memory corruption (CVE-2021-37576)
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.
Solution
Update the affected packages.See Also
http://www.nessus.org/u?a2d7e1e5
https://cwe.mitre.org/data/definitions/20.html
https://cwe.mitre.org/data/definitions/119.html
Plugin Details
Severity: High
ID: 155547
File Name: centos_RHSA-2021-3801.nasl
Version: 1.4
Type: local
Agent: unix
Family: CentOS Local Security Checks
Published: 11/17/2021
Updated: 11/23/2023
Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus
Risk Information
VPR
Risk Factor: High
Score: 7.3
CVSS v2
Risk Factor: High
Base Score: 7.2
Temporal Score: 5.6
Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2021-37576
CVSS v3
Risk Factor: High
Base Score: 8.8
Temporal Score: 7.9
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
CVSS Score Source: CVE-2021-3656
Vulnerability Information
CPE: p-cpe:/a:centos:centos:kernel-tools-libs, cpe:/o:centos:centos:7, p-cpe:/a:centos:centos:kernel-headers, p-cpe:/a:centos:centos:kernel-tools-libs-devel, p-cpe:/a:centos:centos:kernel-debug, p-cpe:/a:centos:centos:kernel-abi-whitelists, p-cpe:/a:centos:centos:perf, p-cpe:/a:centos:centos:kernel-tools, p-cpe:/a:centos:centos:python-perf, p-cpe:/a:centos:centos:kernel, p-cpe:/a:centos:centos:kernel-debug-devel, p-cpe:/a:centos:centos:bpftool, p-cpe:/a:centos:centos:kernel-devel
Required KB Items: Host/local_checks_enabled, Host/CentOS/release, Host/CentOS/rpm-list, Host/cpu
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 11/17/2021
Vulnerability Publication Date: 5/26/2021
Reference Information
CVE: CVE-2021-22543, CVE-2021-3653, CVE-2021-3656, CVE-2021-37576