Executive Summary



This Alert is flagged as TOP 25 Common Weakness Enumeration from CWE/SANS. For more information, you can read this.
Summary
Title Linux kernel (Xenial HWE) vulnerabilities
Informations
Name USN-3848-2 First vendor Publication 2018-12-20
Vendor Ubuntu Last vendor Modification 2018-12-20
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:N/AC:L/Au:N/C:P/I:P/A:P)
Cvss Base Score 7.5 Attack Range Network
Cvss Impact Score 6.4 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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

- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description: - linux-aws: Linux kernel for Amazon Web Services (AWS) systems - linux-lts-xenial: Linux hardware enablement kernel from Xenial for Trusty

Details:

USN-3848-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 16.04 LTS for Ubuntu 14.04 LTS.

It was discovered that a double free existed in the AMD GPIO driver in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-18174)

It was discovered that an integer overrun vulnerability existed in the POSIX timers implementation in the Linux kernel. A local attacker could use this to cause a denial of service. (CVE-2018-12896)

Kanda Motohiro discovered that writing extended attributes to an XFS file system in the Linux kernel in certain situations could cause an error condition to occur. A local attacker could use this to cause a denial of service. (CVE-2018-18690)

It was discovered that an integer overflow vulnerability existed in the CDROM driver of the Linux kernel. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2018-18710)

Update instructions:

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

Ubuntu 14.04 LTS:
linux-image-4.4.0-1037-aws 4.4.0-1037.40
linux-image-4.4.0-141-generic 4.4.0-141.167~14.04.1
linux-image-4.4.0-141-generic-lpae 4.4.0-141.167~14.04.1
linux-image-4.4.0-141-lowlatency 4.4.0-141.167~14.04.1
linux-image-4.4.0-141-powerpc-e500mc 4.4.0-141.167~14.04.1
linux-image-4.4.0-141-powerpc-smp 4.4.0-141.167~14.04.1
linux-image-4.4.0-141-powerpc64-emb 4.4.0-141.167~14.04.1
linux-image-4.4.0-141-powerpc64-smp 4.4.0-141.167~14.04.1
linux-image-aws 4.4.0.1037.37
linux-image-generic-lpae-lts-xenial 4.4.0.141.121
linux-image-generic-lts-xenial 4.4.0.141.121
linux-image-lowlatency-lts-xenial 4.4.0.141.121
linux-image-powerpc-e500mc-lts-xenial 4.4.0.141.121
linux-image-powerpc-smp-lts-xenial 4.4.0.141.121
linux-image-powerpc64-emb-lts-xenial 4.4.0.141.121
linux-image-powerpc64-smp-lts-xenial 4.4.0.141.121

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://usn.ubuntu.com/usn/usn-3848-2
https://usn.ubuntu.com/usn/usn-3848-1
CVE-2017-18174, CVE-2018-12896, CVE-2018-18690, CVE-2018-18710

Package Information:
https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1037.40
https://launchpad.net/ubuntu/+source/linux-lts-xenial/4.4.0-141.167~14.04.1

Original Source

Url : http://www.ubuntu.com/usn/USN-3848-2

CWE : Common Weakness Enumeration

% Id Name
25 % CWE-754 Improper Check for Unusual or Exceptional Conditions
25 % CWE-415 Double Free
25 % CWE-200 Information Exposure
25 % CWE-190 Integer Overflow or Wraparound (CWE/SANS Top 25)

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1
Os 5
Os 1
Os 3185

Nessus® Vulnerability Scanner

Date Description
2019-01-03 Name : The remote Fedora host is missing one or more security updates.
File : fedora_2018-1621b2204a.nasl - Type : ACT_GATHER_INFO
2019-01-03 Name : The remote Fedora host is missing a security update.
File : fedora_2018-50075276e8.nasl - Type : ACT_GATHER_INFO
2019-01-03 Name : The remote Fedora host is missing one or more security updates.
File : fedora_2018-f55c305488.nasl - Type : ACT_GATHER_INFO
2018-12-28 Name : The remote EulerOS host is missing multiple security updates.
File : EulerOS_SA-2018-1432.nasl - Type : ACT_GATHER_INFO
2018-12-21 Name : The remote Amazon Linux AMI host is missing a security update.
File : ala_ALAS-2018-1133.nasl - Type : ACT_GATHER_INFO
2018-12-20 Name : The remote Amazon Linux 2 host is missing a security update.
File : al2_ALAS-2018-1133.nasl - Type : ACT_GATHER_INFO
2018-11-27 Name : The remote Fedora host is missing one or more security updates.
File : fedora_2018-b68776e5b0.nasl - Type : ACT_GATHER_INFO
2018-11-21 Name : The remote EulerOS Virtualization host is missing a security update.
File : EulerOS_SA-2018-1373.nasl - Type : ACT_GATHER_INFO
2018-11-16 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2018-3083.nasl - Type : ACT_GATHER_INFO
2018-07-24 Name : The remote Fedora host is missing a security update.
File : fedora_2018-8484550fff.nasl - Type : ACT_GATHER_INFO

Alert History

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0
1
Date Informations
2018-12-21 05:20:25
  • Multiple Updates
2018-12-21 05:17:49
  • First insertion