Side-channel attack in Intel products - CVE-2018-3646

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Main Vulnerability Database Vulnerabilities #VU14412

Side-channel attack in Intel products - CVE-2018-3646

Published: August 15, 2018


Vulnerability identifier: #VU14412
CSH Severity: Low
CVSS v4: 7.1 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2018-3646
CWE-ID: CWE-200
Exploitation vector: Adjecent network
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows an adjacent attacker to obtain potentially sensitive information.

The vulnerability exists due to an error in systems with microprocessors utilizing speculative execution and address translations. An adjacent attacker with guest OS privilege can trigger terminal page fault, conduct side-channel attack and gain access to potentially sensitive information residing in the L1 data cache.


Affected software

Intel Core i7 processor 45nm
Intel Core X-series Processor Family for Intel X299 platforms
Intel Core X-series Processor Family for Intel X99 platforms
5th generation Intel Core processors
4th generation Intel Core processors
3rd Generation Intel Core Processors
2nd generation Intel Core processors
Intel Core M processor family 32nm
Intel Core M processor family 45nm
Intel Core i7 processor 32nm
Intel Xeon processor 3400 series
Intel Core i5 processor 32nm
Intel Core i5 processor 45nm
Intel Core i3 processor 32nm
Intel Core i3 processor 45nm
8th Generation Intel Core Processors
7th Generation Intel Core Processors
6th Generation Intel Core Processors
Intel Xeon Processor E3 v6 Family
Intel Xeon Processor E3 v5 Family
Intel Xeon Processor E5 Family
Intel Xeon Processor D 1500
Intel Xeon Processor E7 v4 Family
Intel Xeon Processor E7 v3 Family
Intel Xeon Processor E7 v2 Family
Intel Xeon Processor E7 Family
Intel Xeon Processor E5 v4 Family
Intel Xeon Processor E5 v3 Family
Intel Xeon Processor E5 v2 Family
Intel Xeon Processor D 2100
Intel Xeon Processor E3 v4 Family
Intel Xeon Processor E3 v3 Family
Intel Xeon Processor E3 v2 Family
Intel Xeon Processor E3 Family
Intel Xeon processor 7500 series
Intel Xeon processor 6500 series
Intel Xeon processor 5600 series
Intel Xeon processor 5500 series
Intel Xeon processor 3600 series
Intel Xeon Scalable Processors

Debian Linux
Gentoo Linux
Amazon Linux AMI
Red Hat Enterprise Linux Server - Extended Life Cycle Support
Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems)
FreeBSD
VMware ESXi
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux for Power, big endian
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux EUS Compute Node
Red Hat Enterprise Linux for Power, big endian - Extended Update Support
Red Hat Enterprise Linux Server - Extended Update Support
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for Real Time for NFV
Red Hat Enterprise Linux for Power 9
Red Hat Enterprise Linux for IBM System z (Structure A)
Red Hat Enterprise Linux for Real Time
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
macOS
Opensuse
Fedora
MRG Realtime
kernel (Red Hat package)
redhat-release-virtualization-host (Red Hat package)
redhat-virtualization-host (Red Hat package)
kernel-rt (Red Hat package)
xen
kernel-headers
kernel
Red Hat Virtualization
Xen
vCenter Server
Red Hat Virtualization Host
VMware Fusion
VMware Workstation
EMC Integrated Data Protection Appliance
CloudBoost Virtual Appliance

How to mitigate CVE-2018-3646

Install update from vendor's website.

kernel (Red Hat package) - addressed in versions 2.6.18-348.41.1.el5, 2.6.18-434.el5, 2.6.32-358.91.4.el6, 2.6.32-431.91.3.el6, 2.6.32-504.72.4.el6, 2.6.32-573.60.4.el6, 2.6.32-754.3.5.el6, 3.10.0-327.71.4.el7, 3.10.0-514.55.4.el7, 3.10.0-693.37.4.el7, 3.10.0-862.11.6.el7
redhat-release-virtualization-host (Red Hat package) - update to 4.2-5.2.el7
redhat-virtualization-host (Red Hat package) - update to 4.2-20180813.0.el7_5
vCenter Server - addressed in versions 5.5u3j, 6.0u3h, 6.5u2c, 6.7.0d
VMware Fusion - update to 10.1.3
VMware Workstation - update to 14.1.3
EMC Integrated Data Protection Appliance - update to 2.3
kernel-rt (Red Hat package) - addressed in versions 3.10.0-693.37.4.rt56.629.el6rt, 3.10.0-862.11.6.rt56.819.el7
xen - addressed in versions 4.9.2-7.fc27, 4.10.1-6.fc28
kernel-headers - addressed in versions 4.17.14-2.fc27, 4.17.14-2.fc28, 4.17.14-3.fc27, 4.17.14-3.fc28
kernel - addressed in versions 4.17.14-101.fc27, 4.17.14-102.fc27, 4.17.14-201.fc28, 4.17.14-202.fc28
CloudBoost Virtual Appliance - update to 18.2.0.1

External References

Related Security Bulletins