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 vulnerabilities
Informations
Name USN-3847-1 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:L/AC:L/Au:N/C:C/I:C/A:C)
Cvss Base Score 7.2 Attack Range Local
Cvss Impact Score 10 Attack Complexity Low
Cvss Expoit Score 3.9 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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

- Ubuntu 18.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description: - linux: Linux kernel - linux-aws: Linux kernel for Amazon Web Services (AWS) systems - linux-azure: Linux kernel for Microsoft Azure Cloud systems - linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems - linux-kvm: Linux kernel for cloud environments - linux-oem: Linux kernel for OEM processors - linux-raspi2: Linux kernel for Raspberry Pi 2

Details:

It was discovered that a race condition existed in the raw MIDI driver for the Linux kernel, leading to a double free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-10902)

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)

Noam Rathaus discovered that a use-after-free vulnerability existed in the Infiniband implementation in the Linux kernel. An attacker could use this to cause a denial of service (system crash). (CVE-2018-14734)

It was discovered that the YUREX USB device driver for the Linux kernel did not properly restrict user space reads or writes. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-16276)

It was discovered that the BPF verifier in the Linux kernel did not correctly compute numeric bounds in some situations. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-18445)

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 18.04 LTS:
linux-image-4.15.0-1026-gcp 4.15.0-1026.27
linux-image-4.15.0-1028-kvm 4.15.0-1028.28
linux-image-4.15.0-1030-oem 4.15.0-1030.35
linux-image-4.15.0-1030-raspi2 4.15.0-1030.32
linux-image-4.15.0-1031-aws 4.15.0-1031.33
linux-image-4.15.0-1036-azure 4.15.0-1036.38
linux-image-4.15.0-43-generic 4.15.0-43.46
linux-image-4.15.0-43-generic-lpae 4.15.0-43.46
linux-image-4.15.0-43-lowlatency 4.15.0-43.46
linux-image-4.15.0-43-snapdragon 4.15.0-43.46
linux-image-aws 4.15.0.1031.30
linux-image-azure 4.15.0.1036.36
linux-image-gcp 4.15.0.1026.28
linux-image-generic 4.15.0.43.45
linux-image-generic-lpae 4.15.0.43.45
linux-image-gke 4.15.0.1026.28
linux-image-kvm 4.15.0.1028.28
linux-image-lowlatency 4.15.0.43.45
linux-image-oem 4.15.0.1030.35
linux-image-raspi2 4.15.0.1030.28
linux-image-snapdragon 4.15.0.43.45

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-3847-1
CVE-2018-10902, CVE-2018-12896, CVE-2018-14734, CVE-2018-16276,
CVE-2018-18445, CVE-2018-18690, CVE-2018-18710

Package Information:
https://launchpad.net/ubuntu/+source/linux/4.15.0-43.46
https://launchpad.net/ubuntu/+source/linux-aws/4.15.0-1031.33
https://launchpad.net/ubuntu/+source/linux-azure/4.15.0-1036.38
https://launchpad.net/ubuntu/+source/linux-gcp/4.15.0-1026.27
https://launchpad.net/ubuntu/+source/linux-kvm/4.15.0-1028.28
https://launchpad.net/ubuntu/+source/linux-oem/4.15.0-1030.35
https://launchpad.net/ubuntu/+source/linux-raspi2/4.15.0-1030.32

Original Source

Url : http://www.ubuntu.com/usn/USN-3847-1

CWE : Common Weakness Enumeration

% Id Name
14 % CWE-754 Improper Check for Unusual or Exceptional Conditions
14 % CWE-416 Use After Free
14 % CWE-415 Double Free
14 % CWE-200 Information Exposure
14 % CWE-190 Integer Overflow or Wraparound (CWE/SANS Top 25)
14 % CWE-125 Out-of-bounds Read
14 % CWE-20 Improper Input Validation

CPE : Common Platform Enumeration

TypeDescriptionCount
Os 6
Os 2
Os 3173
Os 2
Os 3
Os 1
Os 1
Os 1
Os 2

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-ca0e10fc6e.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-2018-1370.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
2018-10-04 Name : The remote Debian host is missing a security update.
File : debian_DLA-1531.nasl - Type : ACT_GATHER_INFO
2018-10-02 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-4308.nasl - Type : ACT_GATHER_INFO
2018-08-10 Name : The remote Fedora host is missing one or more security updates.
File : fedora_2018-2f6df9abfb.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

If you want to see full details history, please login or register.
0
1
Date Informations
2018-12-21 05:20:25
  • Multiple Updates
2018-12-21 05:17:49
  • First insertion