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-4114-1 First vendor Publication 2019-09-02
Vendor Ubuntu Last vendor Modification 2019-09-02
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:S/C:N/I:N/A:C)
Cvss Base Score 6.8 Attack Range Network
Cvss Impact Score 6.9 Attack Complexity Low
Cvss Expoit Score 8 Authentication Requires single instance
Calculate full CVSS 2.0 Vectors scores

Detail

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

- Ubuntu 19.04 - Ubuntu 18.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description: - linux: Linux kernel - 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-raspi2: Linux kernel for Raspberry Pi 2 - linux-snapdragon: Linux kernel for Snapdragon processors - linux-gke-5.0: Linux kernel for Google Container Engine (GKE) systems - linux-hwe: Linux hardware enablement (HWE) kernel

Details:

Amit Klein and Benny Pinkas discovered that the Linux kernel did not sufficiently randomize IP ID values generated for connectionless networking protocols. A remote attacker could use this to track particular Linux devices. (CVE-2019-10638)

Praveen Pandey discovered that the Linux kernel did not properly validate sent signals in some situations on PowerPC systems with transactional memory disabled. A local attacker could use this to cause a denial of service. (CVE-2019-13648)

It was discovered that the floppy driver in the Linux kernel did not properly validate meta data, leading to a buffer overread. A local attacker could use this to cause a denial of service (system crash). (CVE-2019-14283)

It was discovered that the floppy driver in the Linux kernel did not properly validate ioctl() calls, leading to a division-by-zero. A local attacker could use this to cause a denial of service (system crash). (CVE-2019-14284)

Jason Wang discovered that an infinite loop vulnerability existed in the virtio net driver in the Linux kernel. A local attacker in a guest VM could possibly use this to cause a denial of service in the host system. (CVE-2019-3900)

Update instructions:

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

Ubuntu 19.04:
linux-image-5.0.0-1015-gcp 5.0.0-1015.15
linux-image-5.0.0-1015-kvm 5.0.0-1015.16
linux-image-5.0.0-1015-raspi2 5.0.0-1015.15
linux-image-5.0.0-1018-azure 5.0.0-1018.19
linux-image-5.0.0-1019-snapdragon 5.0.0-1019.20
linux-image-5.0.0-27-generic 5.0.0-27.28
linux-image-5.0.0-27-generic-lpae 5.0.0-27.28
linux-image-5.0.0-27-lowlatency 5.0.0-27.28
linux-image-azure 5.0.0.1018.17
linux-image-gcp 5.0.0.1015.41
linux-image-generic 5.0.0.27.28
linux-image-generic-lpae 5.0.0.27.28
linux-image-gke 5.0.0.1015.41
linux-image-kvm 5.0.0.1015.15
linux-image-lowlatency 5.0.0.27.28
linux-image-raspi2 5.0.0.1015.12
linux-image-snapdragon 5.0.0.1019.12
linux-image-virtual 5.0.0.27.28

Ubuntu 18.04 LTS:
linux-image-5.0.0-1015-gke 5.0.0-1015.15~18.04.1
linux-image-5.0.0-1018-azure 5.0.0-1018.19~18.04.1
linux-image-5.0.0-27-generic 5.0.0-27.28~18.04.1
linux-image-5.0.0-27-generic-lpae 5.0.0-27.28~18.04.1
linux-image-5.0.0-27-lowlatency 5.0.0-27.28~18.04.1
linux-image-azure 5.0.0.1018.28
linux-image-generic-hwe-18.04 5.0.0.27.84
linux-image-generic-lpae-hwe-18.04 5.0.0.27.84
linux-image-gke-5.0 5.0.0.1015.5
linux-image-lowlatency-hwe-18.04 5.0.0.27.84
linux-image-snapdragon-hwe-18.04 5.0.0.27.84
linux-image-virtual-hwe-18.04 5.0.0.27.84

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/4114-1
CVE-2019-10638, CVE-2019-13648, CVE-2019-14283, CVE-2019-14284,
CVE-2019-3900

Package Information:
https://launchpad.net/ubuntu/+source/linux/5.0.0-27.28
https://launchpad.net/ubuntu/+source/linux-azure/5.0.0-1018.19
https://launchpad.net/ubuntu/+source/linux-gcp/5.0.0-1015.15
https://launchpad.net/ubuntu/+source/linux-kvm/5.0.0-1015.16
https://launchpad.net/ubuntu/+source/linux-raspi2/5.0.0-1015.15
https://launchpad.net/ubuntu/+source/linux-snapdragon/5.0.0-1019.20
https://launchpad.net/ubuntu/+source/linux-azure/5.0.0-1018.19~18.04.1
https://launchpad.net/ubuntu/+source/linux-gke-5.0/5.0.0-1015.15~18.04.1
https://launchpad.net/ubuntu/+source/linux-hwe/5.0.0-27.28~18.04.1

Original Source

Url : http://www.ubuntu.com/usn/USN-4114-1

CWE : Common Weakness Enumeration

% Id Name
20 % CWE-399 Resource Management Errors
20 % CWE-369 Divide By Zero
20 % CWE-326 Inadequate Encryption Strength
20 % CWE-190 Integer Overflow or Wraparound (CWE/SANS Top 25)
20 % CWE-125 Out-of-bounds Read

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1
Application 1
Application 1
Application 1
Application 1
Application 1
Application 1
Os 3
Os 3
Os 2
Os 3322
Os 2

Alert History

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0
Date Informations
2019-09-03 05:18:31
  • First insertion