Executive Summary

Summary
Title Linux kernel (Trusty HWE) vulnerabilities
Informations
Name USN-3742-2 First vendor Publication 2018-08-14
Vendor Ubuntu Last vendor Modification 2018-08-14
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:N/I:N/A:C)
Cvss Base Score 7.8 Attack Range Network
Cvss Impact Score 6.9 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 12.04 ESM

Summary:

Several security issues were fixed in the Linux kernel.

Software Description: - linux-lts-trusty: Linux hardware enablement kernel from Trusty for Precise ESM

Details:

USN-3742-1 fixed vulnerabilities in the Linux kernel for Ubuntu 14.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 14.04 for Ubuntu 12.04 ESM.

It was discovered that memory present in the L1 data cache of an Intel CPU core may be exposed to a malicious process that is executing on the CPU core. This vulnerability is also known as L1 Terminal Fault (L1TF). A local attacker in a guest virtual machine could use this to expose sensitive information (memory from other guests or the host OS). (CVE-2018-3646)

It was discovered that memory present in the L1 data cache of an Intel CPU core may be exposed to a malicious process that is executing on the CPU core. This vulnerability is also known as L1 Terminal Fault (L1TF). A local attacker could use this to expose sensitive information (memory from the kernel or other processes). (CVE-2018-3620)

Andrey Konovalov discovered an out-of-bounds read in the POSIX timers subsystem in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or expose sensitive information. (CVE-2017-18344)

Juha-Matti Tilli discovered that the TCP implementation in the Linux kernel performed algorithmically expensive operations in some situations when handling incoming packets. A remote attacker could use this to cause a denial of service. (CVE-2018-5390)

Juha-Matti Tilli discovered that the IP implementation in the Linux kernel performed algorithmically expensive operations in some situations when handling incoming packet fragments. A remote attacker could use this to cause a denial of service. (CVE-2018-5391)

Update instructions:

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

Ubuntu 12.04 ESM:
linux-image-3.13.0-155-generic 3.13.0-155.206~precise1
linux-image-3.13.0-155-generic-lpae 3.13.0-155.206~precise1
linux-image-generic-lpae-lts-trusty 3.13.0.155.145
linux-image-generic-lts-trusty 3.13.0.155.145

Please note that the recommended mitigation for CVE-2018-3646 involves updating processor microcode in addition to updating the kernel; however, the kernel includes a fallback for processors that have not received microcode updates.

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-3742-2
https://usn.ubuntu.com/usn/usn-3742-1
CVE-2017-18344, CVE-2018-3620, CVE-2018-3646, CVE-2018-5390,
CVE-2018-5391,
https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/L1TF

Original Source

Url : http://www.ubuntu.com/usn/USN-3742-2

CWE : Common Weakness Enumeration

% Id Name
25 % CWE-400 Uncontrolled Resource Consumption ('Resource Exhaustion')
25 % CWE-203 Information Exposure Through Discrepancy
25 % CWE-125 Out-of-bounds Read
25 % CWE-20 Improper Input Validation

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1
Application 1
Application 6
Application 1
Application 2
Application 1
Application 1
Application 1
Application 1
Application 130
Application 118
Application 120
Application 113
Application 139
Application 115
Application 84
Application 107
Application 132
Application 129
Application 133
Application 118
Application 94
Application 1
Application 1
Application 1
Application 1
Application 1
Application 1
Hardware 7
Hardware 6
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 169
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Hardware 1
Os 9
Os 4
Os 2
Os 3158
Os 1
Os 1
Os 1
Os 1
Os 1
Os 1
Os 1
Os 1
Os 1
Os 1
Os 3
Os 2
Os 1
Os 2
Os 2
Os 6
Os 6
Os 4
Os 2

Snort® IPS/IDS

Date Description
2020-12-05 Intel x86 L1 data cache side-channel analysis information leak attempt
RuleID : 47598 - Revision : 1 - Type : OS-OTHER
2020-12-05 Intel x86 L1 data cache side-channel analysis information leak attempt
RuleID : 47597 - Revision : 1 - Type : OS-OTHER
2020-12-05 Intel x86 L1 data cache side-channel analysis information leak attempt
RuleID : 47596 - Revision : 1 - Type : OS-OTHER
2020-12-05 Intel x86 L1 data cache side-channel analysis information leak attempt
RuleID : 47595 - Revision : 1 - Type : OS-OTHER

Nessus® Vulnerability Scanner

Date Description
2019-01-11 Name : The remote Virtuozzo host is missing multiple security updates.
File : Virtuozzo_VZA-2018-075.nasl - Type : ACT_GATHER_INFO
2019-01-10 Name : The remote device is affected by multiple vulnerabilities.
File : juniper_space_jsa10917_184R1.nasl - Type : ACT_GATHER_INFO
2019-01-03 Name : The remote Fedora host is missing one or more security updates.
File : fedora_2018-f8cba144ae.nasl - Type : ACT_GATHER_INFO
2019-01-03 Name : The remote Fedora host is missing a security update.
File : fedora_2018-683dfde81a.nasl - Type : ACT_GATHER_INFO
2018-12-14 Name : The remote device is missing a vendor-supplied security patch.
File : f5_bigip_SOL95343321.nasl - Type : ACT_GATHER_INFO
2018-12-11 Name : The remote EulerOS host is missing multiple security updates.
File : EulerOS_SA-2018-1406.nasl - Type : ACT_GATHER_INFO
2018-12-05 Name : The remote PhotonOS host is missing multiple security updates.
File : PhotonOS_PHSA-2018-2_0-0101.nasl - Type : ACT_GATHER_INFO
2018-11-21 Name : The remote EulerOS Virtualization host is missing a security update.
File : EulerOS_SA-2018-1369.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
2018-11-06 Name : The remote EulerOS host is missing multiple security updates.
File : EulerOS_SA-2018-1360.nasl - Type : ACT_GATHER_INFO
2018-10-31 Name : The remote host is missing a macOS or Mac OS X security update that fixes mul...
File : macosx_SecUpd2018-005.nasl - Type : ACT_GATHER_INFO
2018-10-31 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201810-06.nasl - Type : ACT_GATHER_INFO
2018-10-31 Name : The remote host is missing a macOS security update that fixes multiple vulner...
File : macosx_SecUpd_10_13_6_2018-002.nasl - Type : ACT_GATHER_INFO
2018-10-26 Name : The remote EulerOS Virtualization host is missing a security update.
File : EulerOS_SA-2018-1352.nasl - Type : ACT_GATHER_INFO
2018-10-26 Name : The remote EulerOS Virtualization host is missing a security update.
File : EulerOS_SA-2018-1350.nasl - Type : ACT_GATHER_INFO
2018-10-26 Name : The remote EulerOS Virtualization host is missing multiple security updates.
File : EulerOS_SA-2018-1345.nasl - Type : ACT_GATHER_INFO
2018-10-26 Name : The remote EulerOS Virtualization host is missing multiple security updates.
File : EulerOS_SA-2018-1323.nasl - Type : ACT_GATHER_INFO
2018-10-25 Name : The remote EulerOS Virtualization host is missing a security update.
File : EulerOS_SA-2018-1322.nasl - Type : ACT_GATHER_INFO
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
2018-10-10 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2018-2846.nasl - Type : ACT_GATHER_INFO
2018-09-17 Name : The remote Debian host is missing a security update.
File : debian_DLA-1506.nasl - Type : ACT_GATHER_INFO
2018-09-04 Name : The remote EulerOS host is missing multiple security updates.
File : EulerOS_SA-2018-1278.nasl - Type : ACT_GATHER_INFO
2018-09-04 Name : The remote Fedora host is missing a security update.
File : fedora_2018-915602df63.nasl - Type : ACT_GATHER_INFO
2018-09-04 Name : The remote EulerOS host is missing multiple security updates.
File : EulerOS_SA-2018-1279.nasl - Type : ACT_GATHER_INFO
2018-08-31 Name : The remote Virtuozzo host is missing multiple security updates.
File : Virtuozzo_VZA-2018-063.nasl - Type : ACT_GATHER_INFO
2018-08-31 Name : The remote PhotonOS host is missing multiple security updates.
File : PhotonOS_PHSA-2018-2_0-0088.nasl - Type : ACT_GATHER_INFO
2018-08-31 Name : The remote PhotonOS host is missing multiple security updates.
File : PhotonOS_PHSA-2018-1_0-0180.nasl - Type : ACT_GATHER_INFO
2018-08-29 Name : The remote Debian host is missing a security update.
File : debian_DLA-1481.nasl - Type : ACT_GATHER_INFO
2018-08-29 Name : The remote Slackware host is missing a security update.
File : Slackware_SSA_2018-240-01.nasl - Type : ACT_GATHER_INFO
2018-08-23 Name : The remote FreeBSD host is missing one or more security-related updates.
File : freebsd_pkg_2310b814a65211e8805ba4badb2f4699.nasl - Type : ACT_GATHER_INFO
2018-08-20 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-4279.nasl - Type : ACT_GATHER_INFO
2018-08-20 Name : The remote Virtuozzo host is missing multiple security updates.
File : Virtuozzo_VZA-2018-055.nasl - Type : ACT_GATHER_INFO
2018-08-17 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-4274.nasl - Type : ACT_GATHER_INFO
2018-08-16 Name : The remote Fedora host is missing one or more security updates.
File : fedora_2018-1c80fea1cd.nasl - Type : ACT_GATHER_INFO
2018-08-16 Name : The remote Debian host is missing a security update.
File : debian_DLA-1466.nasl - Type : ACT_GATHER_INFO
2018-08-16 Name : A server virtualization platform installed on the remote host is affected by ...
File : citrix_xenserver_CTX236548.nasl - Type : ACT_GATHER_INFO
2018-08-15 Name : A virtualization application installed on the remote macOS or Mac OS X host i...
File : macosx_fusion_vmsa_2018_0020.nasl - Type : ACT_GATHER_INFO
2018-08-15 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-4272.nasl - Type : ACT_GATHER_INFO
2018-08-15 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2018-2390.nasl - Type : ACT_GATHER_INFO
2018-08-15 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2018-2384.nasl - Type : ACT_GATHER_INFO
2018-08-15 Name : The remote Amazon Linux AMI host is missing a security update.
File : ala_ALAS-2018-1058.nasl - Type : ACT_GATHER_INFO
2018-08-15 Name : The remote Amazon Linux 2 host is missing a security update.
File : al2_ALAS-2018-1058.nasl - Type : ACT_GATHER_INFO
2018-08-10 Name : The remote Virtuozzo host is missing a security update.
File : Virtuozzo_VZA-2018-052.nasl - Type : ACT_GATHER_INFO
2018-08-07 Name : The remote Virtuozzo host is missing a security update.
File : Virtuozzo_VZA-2018-050.nasl - Type : ACT_GATHER_INFO
2018-08-07 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-4266.nasl - Type : ACT_GATHER_INFO
2018-08-07 Name : The remote Amazon Linux AMI host is missing a security update.
File : ala_ALAS-2018-1049.nasl - Type : ACT_GATHER_INFO
2018-08-07 Name : The remote Amazon Linux 2 host is missing a security update.
File : al2_ALAS-2018-1050.nasl - Type : ACT_GATHER_INFO

Alert History

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0
1
2
3
4
Date Informations
2018-10-11 17:21:50
  • Multiple Updates
2018-09-07 17:21:49
  • Multiple Updates
2018-08-21 17:21:45
  • Multiple Updates
2018-08-17 00:20:52
  • Multiple Updates
2018-08-15 05:17:54
  • First insertion