Executive Summary

Summary
Title Linux kernel (Azure) vulnerability
Informations
Name USN-3488-1 First vendor Publication 2017-11-21
Vendor Ubuntu Last vendor Modification 2017-11-21
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:L/AC:M/Au:N/C:C/I:C/A:C)
Cvss Base Score 6.9 Attack Range Local
Cvss Impact Score 10 Attack Complexity Medium
Cvss Expoit Score 3.4 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 16.04 LTS

Summary:

The system could be made to crash or run programs as an administrator.

Software Description: - linux-azure: Linux kernel for Microsoft Azure Cloud systems

Details:

It was discovered that the KVM subsystem in the Linux kernel did not properly keep track of nested levels in guest page tables. A local attacker in a guest VM could use this to cause a denial of service (host OS crash) or possibly execute arbitrary code in the host OS.

Update instructions:

The problem can be corrected by updating your system to the following package versions:

Ubuntu 16.04 LTS:
linux-image-4.11.0-1015-azure 4.11.0-1015.15
linux-image-azure 4.11.0.1015.15

After a standard system update you need to reboot your computer to make all the necessary changes.

ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well.

References:
https://www.ubuntu.com/usn/usn-3488-1
CVE-2017-12188

Package Information:
https://launchpad.net/ubuntu/+source/linux-azure/4.11.0-1015.15

Original Source

Url : http://www.ubuntu.com/usn/USN-3488-1

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-121 Stack-based Buffer Overflow

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1
Os 2925

Nessus® Vulnerability Scanner

Date Description
2018-08-17 Name : The remote PhotonOS host is missing multiple security updates.
File : PhotonOS_PHSA-2017-0043.nasl - Type : ACT_GATHER_INFO
2018-03-12 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2018-0395.nasl - Type : ACT_GATHER_INFO
2017-12-01 Name : The remote EulerOS host is missing multiple security updates.
File : EulerOS_SA-2017-1292.nasl - Type : ACT_GATHER_INFO
2017-11-22 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-3484-3.nasl - Type : ACT_GATHER_INFO
2017-11-22 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-3487-1.nasl - Type : ACT_GATHER_INFO
2017-11-22 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-3488-1.nasl - Type : ACT_GATHER_INFO
2017-11-21 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-3484-1.nasl - Type : ACT_GATHER_INFO
2017-11-21 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-3484-2.nasl - Type : ACT_GATHER_INFO
2017-11-01 Name : The remote EulerOS host is missing multiple security updates.
File : EulerOS_SA-2017-1271.nasl - Type : ACT_GATHER_INFO
2017-10-25 Name : The remote Virtuozzo host is missing a security update.
File : Virtuozzo_VZA-2017-098.nasl - Type : ACT_GATHER_INFO

Alert History

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0
1
Date Informations
2017-11-23 13:23:48
  • Multiple Updates
2017-11-21 21:22:14
  • First insertion