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-4095-2 First vendor Publication 2019-08-13
Vendor Ubuntu Last vendor Modification 2019-08-13
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:A/AC:L/Au:N/C:C/I:C/A:C)
Cvss Base Score 8.3 Attack Range Adjacent network
Cvss Impact Score 10 Attack Complexity Low
Cvss Expoit Score 6.5 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 ESM

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-4095-1 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 ESM.

Eli Biham and Lior Neumann discovered that the Bluetooth implementation in the Linux kernel did not properly validate elliptic curve parameters during Diffie-Hellman key exchange in some situations. An attacker could use this to expose sensitive information. (CVE-2018-5383)

It was discovered that a heap buffer overflow existed in the Marvell Wireless LAN device driver for the Linux kernel. An attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2019-10126)

Andrei Vlad Lutas and Dan Lutas discovered that some x86 processors incorrectly handle SWAPGS instructions during speculative execution. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2019-1125)

It was discovered that the ext4 file system implementation in the Linux kernel did not properly zero out memory in some situations. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2019-11833)

It was discovered that the PowerPC dlpar implementation in the Linux kernel did not properly check for allocation errors in some situations. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2019-12614)

It was discovered that the Linux kernel on ARM processors allowed a tracing process to modify a syscall after a seccomp decision had been made on that syscall. A local attacker could possibly use this to bypass seccomp restrictions. (CVE-2019-2054)

It was discovered that the Marvell Wireless LAN device driver in the Linux kernel did not properly validate the BSS descriptor. A local attacker could possibly use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2019-3846)

Update instructions:

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

Ubuntu 14.04 ESM:
linux-image-4.4.0-1050-aws 4.4.0-1050.54
linux-image-4.4.0-159-generic 4.4.0-159.187~14.04.1
linux-image-4.4.0-159-generic-lpae 4.4.0-159.187~14.04.1
linux-image-4.4.0-159-lowlatency 4.4.0-159.187~14.04.1
linux-image-4.4.0-159-powerpc-e500mc 4.4.0-159.187~14.04.1
linux-image-4.4.0-159-powerpc-smp 4.4.0-159.187~14.04.1
linux-image-4.4.0-159-powerpc64-emb 4.4.0-159.187~14.04.1
linux-image-4.4.0-159-powerpc64-smp 4.4.0-159.187~14.04.1
linux-image-aws 4.4.0.1050.51
linux-image-generic-lpae-lts-xenial 4.4.0.159.140
linux-image-generic-lts-xenial 4.4.0.159.140
linux-image-lowlatency-lts-xenial 4.4.0.159.140
linux-image-powerpc-e500mc-lts-xenial 4.4.0.159.140
linux-image-powerpc-smp-lts-xenial 4.4.0.159.140
linux-image-powerpc64-emb-lts-xenial 4.4.0.159.140
linux-image-powerpc64-smp-lts-xenial 4.4.0.159.140
linux-image-virtual-lts-xenial 4.4.0.159.140

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/4095-2
https://usn.ubuntu.com/4095-1
CVE-2018-5383, CVE-2019-10126, CVE-2019-1125, CVE-2019-11833,
CVE-2019-12614, CVE-2019-2054, CVE-2019-3846

Original Source

Url : http://www.ubuntu.com/usn/USN-4095-2

CWE : Common Weakness Enumeration

% Id Name
25 % CWE-787 Out-of-bounds Write (CWE/SANS Top 25)
25 % CWE-476 NULL Pointer Dereference
25 % CWE-347 Improper Verification of Cryptographic Signature
25 % CWE-119 Failure to Constrain Operations within the Bounds of a Memory Buffer

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 2
Application 1
Application 1
Application 1
Application 1
Os 167
Os 112
Os 4
Os 2
Os 2
Os 8
Os 3304
Os 7
Os 1
Os 1
Os 1
Os 3
Os 2
Os 3
Os 1
Os 3
Os 3
Os 1
Os 1
Os 1
Os 1
Os 1
Os 1

Nessus® Vulnerability Scanner

Date Description
2018-10-18 Name : The remote host is missing a macOS update that fixes multiple security vulner...
File : macos_10_14.nasl - Type : ACT_GATHER_INFO
2018-09-18 Name : The remote Apple TV device is affected by multiple vulnerabilities.
File : appletv_12.nasl - Type : ACT_GATHER_INFO
2018-07-17 Name : The remote host is missing a macOS update that fixes multiple security vulner...
File : macos_10_13_6.nasl - Type : ACT_GATHER_INFO
2018-07-17 Name : The remote host is missing a macOS or Mac OS X security update that fixes mul...
File : macosx_SecUpd2018-004.nasl - Type : ACT_GATHER_INFO
2018-06-05 Name : The remote Apple TV device is affected by multiple vulnerabilities.
File : appletv_11_4.nasl - Type : ACT_GATHER_INFO
2018-06-05 Name : The remote host is missing a macOS update that fixes multiple security vulner...
File : macos_10_13_5.nasl - Type : ACT_GATHER_INFO

Alert History

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0
1
Date Informations
2019-09-11 12:07:19
  • Multiple Updates
2019-08-14 00:19:03
  • First insertion