5On August 14th, 2018, three vulnerabilities were disclosed by Intel and security researchers that leverage a speculative execution side-channel method referred to as L1 Terminal Fault (L1TF) that affects modern Intel microprocessors. These vulnerabilities could allow an unprivileged, local attacker, in specific circumstances, to read privileged memory belonging to other processes. The first vulnerability, CVE-2018-3615, affects Intel SGX technology and is referred to by the researchers who discovered it as foreshadow. This vulnerability is not known to affect any Cisco devices as the Cisco devices do not utilize Intel SGX technology. The second vulnerability, CVE-2018-3620, and the third vulnerability, CVE-2018-3646, are referred to as L1 Terminal Fault attacks by Intel. These two vulnerabilities affect multi-core processors that leverage Intel Hyper-Threading technology supporting Operating System, System Management Mode, and Virtualized workloads. Like the previously disclosed Spectre vulnerabilities, all three new vulnerabilities leverage cache-timing attacks to infer any disclosed data. To exploit any of these vulnerabilities, an attacker must be able to run crafted or script code on an affected device. Although the underlying CPU and operating system combination in a product or service may be affected by these vulnerabilities, the majority of Cisco products are closed systems that do not allow customers to run custom code and are, therefore, not vulnerable. There is no vector from which to exploit them. Cisco products are considered potentially vulnerable only if they allow customers to execute custom code side-by-side with Cisco code on the same microprocessor. A Cisco product that may be deployed as a virtual machine or a container, even while not directly affected by any of these vulnerabilities, could be targeted by such attacks if the hosting environment is vulnerable. Cisco recommends that customers harden their virtual environments, tightly control user access, and ensure that all security updates are installed. Customers who are deploying products as a virtual device in multi-tenant hosting environments should ensure that the underlying hardware, as well as the operating system or hypervisor, is patched against the vulnerabilities in question. Although Cisco cloud services are not directly affected by these vulnerabilities, the infrastructure on which they run may be impacted. See the Affected Products section of this advisory for information about the impact of these vulnerabilities on Cisco cloud services. Cisco will release software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities. This advisory is available at the following link: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180814-cpusidechannel
The first vulnerability, CVE-2018-3615, affects Intel SGX technology and is referred to by the researchers who discovered it as foreshadow. This vulnerability is not known to affect any Cisco devices as the Cisco devices do not utilize Intel SGX technology.
The second vulnerability, CVE-2018-3620, and the third vulnerability, CVE-2018-3646, are referred to as L1 Terminal Fault attacks by Intel. These two vulnerabilities affect multi-core processors that leverage Intel Hyper-Threading technology supporting Operating System, System Management Mode, and Virtualized workloads. Like the previously disclosed Spectre vulnerabilities, all three new vulnerabilities leverage cache-timing attacks to infer any disclosed data.
To exploit any of these vulnerabilities, an attacker must be able to run crafted or script code on an affected device. Although the underlying CPU and operating system combination in a product or service may be affected by these vulnerabilities, the majority of Cisco products are closed systems that do not allow customers to run custom code and are, therefore, not vulnerable. There is no vector from which to exploit them. Cisco products are considered potentially vulnerable only if they allow customers to execute custom code side-by-side with Cisco code on the same microprocessor.
A Cisco product that may be deployed as a virtual machine or a container, even while not directly affected by any of these vulnerabilities, could be targeted by such attacks if the hosting environment is vulnerable. Cisco recommends that customers harden their virtual environments, tightly control user access, and ensure that all security updates are installed. Customers who are deploying products as a virtual device in multi-tenant hosting environments should ensure that the underlying hardware, as well as the operating system or hypervisor, is patched against the vulnerabilities in question.
Although Cisco cloud services are not directly affected by these vulnerabilities, the infrastructure on which they run may be impacted. See the Affected Products section of this advisory for information about the impact of these vulnerabilities on Cisco cloud services.
Cisco will release software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.
This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180814-cpusidechannel
Any product or service not listed in the Vulnerable Products section of this advisory is to be considered not vulnerable. The criteria for considering whether a product is vulnerable is explained in the Summary section of this advisory.
Because this is an ongoing investigation, please be aware that products and services currently considered not vulnerable may subsequently be considered vulnerable as additional information becomes available.
| Product | Cisco Bug ID | Fixed Release Availability |
|---|---|---|
| Network Application, Service, and Acceleration | ||
| Cisco Cloud Services Platform 2100 | CSCvm02914 | |
| Routing and Switching - Enterprise and Service Provider | ||
| Cisco 4000 Series Integrated Services Routers (IOS XE Open Service Containers) | CSCvm02977 | |
| Cisco ASR 1000 Series Aggregation Services Router with RP2 or RP3 (IOS XE Open Service Containers) | CSCvm02977 | |
| Cisco ASR 1001-HX Series Aggregation Services Routers (IOS XE Open Service Containers) | CSCvm02977 | |
| Cisco ASR 1001-X Series Aggregation Services Routers (IOS XE Open Service Containers) | CSCvm02977 | |
| Cisco ASR 1002-HX Series Aggregation Services Routers (IOS XE Open Service Containers) | CSCvm02977 | |
| Cisco ASR 1002-X Series Aggregation Services Routers (IOS XE Open Service Containers) | CSCvm02977 | |
| Cisco Cloud Services Router 1000V Series (IOS XE Open Service Containers) | CSCvm02977 | |
| Cisco Nexus 3000 Series Switches | CSCvm02926 | |
| Cisco Nexus 3500 Series Switches | CSCvm02929 | |
| Cisco Nexus 5000 Series Switches | CSCvm02930 | |
| Cisco Nexus 7000 Series Switches | CSCvm02924 | |
| Cisco Nexus 9000 Series Switches - Standalone, NX-OS mode | CSCvm02926 | |
| Unified Computing | ||
| Cisco C880 M4 Server | CSCvm02911 | |
| Cisco C880 M5 Server | CSCvm02911 | |
| Cisco Enterprise NFV Infrastructure Software (NFVIS) | CSCvm02987 | |
| Cisco HyperFlex System | CSCvm02920 | |
| Cisco UCS B-Series M2 Blade Servers | CSCvm02934 | Cisco UCS B-Series M2 Blade Servers - Managed UCS Manager 2.2(8l) - (Available) UCS Manager 3.2(3g) - (Available) Cisco UCS C-Series M2 Rack Servers - Managed UCS Manager 2.2(8l) - (Available) Cisco IMC 1.4(3z09)(Available) Cisco IMC 1.5(9f)(Available) |
| Cisco UCS B-Series M3 Blade Servers - Managed | CSCvm03356 | Cisco UCS B-Series M3 Blade Servers - Managed UCS Manager 2.2(8l) (Available) UCS Manager 3.1(3j) (Available) UCS Manager 3.2(3g) (Available) UCS C-Series M3 Rack Servers - Managed UCS Manager 3.2(3g) - (Available) UCS Manager 3.1(3j) - (Available) UCS Manager 2.2(8l) - (Available) Cisco IMC 3.0(4i) - (Available) Cisco IMC 2.0(9o) - (Available) |
| Cisco UCS B-Series M4 Blade Servers (except B260, B460) | CSCvm03351 | Cisco UCS B-Series M4 Blade Servers (except B260 B460) UCS Manager 3.2(3e) - (Available) UCS Manager 3.1(3j) - (Available) UCS Manager 2.2(8l) - (Available) Cisco UCS C-Series M4 Rack Servers - Managed (except C460) - UCS Manager 3.2(3e) - (Available) Cisco UCS S3260 M4 Storage Server - Managed - UCS Manager 3.2(3e) - (Available) Cisco UCS S3260 M4 Storage Server - Standalone - Cisco IMC 3.0(4e) - (Available) Cisco UCS S3260 M4 Storage Server - UCS Manager 3.1(3j) - (Available) Cisco UCS C-Series M4 Rack Servers Cisco IMC 3.0(4e) - (Available) Cisco IMC 2.0(10k) - (Available) Cisco UCS S3260 M4 Storage Server UCS Manager 3.2(3e) - (Available) UCS Manager 3.1(3j) - (Available) UCS Manager 2.2(8l) - (Available) Cisco UCS C-Series M4 Rack Servers - Managed (except C460) - UCS Manager 3.2(3e) - (Available) Cisco UCS S3260 M4 Storage Server - Managed - UCS Manager 3.2(3e) - (Available) Cisco UCS S3260 M4 Storage Server - Standalone - Cisco IMC 3.0(4e) - (Available) Cisco UCS S3260 M4 Storage |
| Cisco UCS B-Series M5 Blade Servers | CSCvm03339 | Cisco UCS B-Series M5 Blade Servers UCS Manager 3.2(3g) - (Available) Cisco UCS C-Series M5 Rack Servers -Standalone Cisco IMC 3.1(2i) - (Available) Cisco UCS C-Series M5 Rack Servers - Managed UCS Manager 3.2(3g) - (Available) |
| Cisco UCS C-Series M2 Rack Servers | CSCvm02934 | Cisco UCS B-Series M2 Blade Servers - Managed UCS Manager 2.2(8l) - (Available) UCS Manager 3.2(3g) - (Available) Cisco UCS C-Series M2 Rack Servers - Managed UCS Manager 2.2(8l) - (Available) Cisco IMC 1.4(3z09)(Available) Cisco IMC 1.5(9f)(Available) |
| Cisco UCS C-Series M3 Rack Servers - Managed | CSCvm03356 | Cisco UCS B-Series M3 Blade Servers - Managed UCS Manager 2.2(8l) (Available) UCS Manager 3.1(3j) (Available) UCS Manager 3.2(3g) (Available) UCS C-Series M3 Rack Servers - Managed UCS Manager 3.2(3g) - (Available) UCS Manager 3.1(3j) - (Available) UCS Manager 2.2(8l) - (Available) Cisco IMC 3.0(4i) - (Available) Cisco IMC 2.0(9o) - (Available) |
| Cisco UCS C-Series M3 Rack Servers - Standalone | CSCvm03357 | UCS Manager 3.2(3g) - (Available) UCS Manager 3.1(3j) - (Available) UCS Manager 2.2(8l) - (Available) Cisco IMC 3.0(4i) - (Available) Cisco IMC 2.0(9o) - (Available) |
| Cisco UCS C-Series M4 Rack Servers (except C460) - Standalone 1 | CSCvm03353 | Cisco IMC 3.0(4e) - (Available) Cisco IMC 2.0(10k) - (Available) |
| Cisco UCS C-Series M4 Rack Servers (except C460) -Managed 1 | CSCvm03351 | Cisco UCS B-Series M4 Blade Servers (except B260 B460) UCS Manager 3.2(3e) - (Available) UCS Manager 3.1(3j) - (Available) UCS Manager 2.2(8l) - (Available) Cisco UCS C-Series M4 Rack Servers - Managed (except C460) - UCS Manager 3.2(3e) - (Available) Cisco UCS S3260 M4 Storage Server - Managed - UCS Manager 3.2(3e) - (Available) Cisco UCS S3260 M4 Storage Server - Standalone - Cisco IMC 3.0(4e) - (Available) Cisco UCS S3260 M4 Storage Server - UCS Manager 3.1(3j) - (Available) Cisco UCS C-Series M4 Rack Servers Cisco IMC 3.0(4e) - (Available) Cisco IMC 2.0(10k) - (Available) Cisco UCS S3260 M4 Storage Server UCS Manager 3.2(3e) - (Available) UCS Manager 3.1(3j) - (Available) UCS Manager 2.2(8l) - (Available) Cisco UCS C-Series M4 Rack Servers - Managed (except C460) - UCS Manager 3.2(3e) - (Available) Cisco UCS S3260 M4 Storage Server - Managed - UCS Manager 3.2(3e) - (Available) Cisco UCS S3260 M4 Storage Server - Standalone - Cisco IMC 3.0(4e) - (Available) Cisco UCS S3260 M4 Storage |
| Cisco UCS C-Series M5 Rack Servers - Managed 1 | CSCvm03339 | Cisco UCS B-Series M5 Blade Servers UCS Manager 3.2(3g) - (Available) Cisco UCS C-Series M5 Rack Servers -Standalone Cisco IMC 3.1(2i) - (Available) Cisco UCS C-Series M5 Rack Servers - Managed UCS Manager 3.2(3g) - (Available) |
| Cisco UCS C-Series M5 Rack Servers -Standalone 1 | CSCvm03347 | Cisco UCS B-Series M5 Blade Servers UCS Manager 3.2(3g) - (Available) Cisco UCS C-Series M5 Rack Servers -Standalone Cisco IMC 3.1(2i) - (Available) |
| Cisco UCS E-Series Servers | CSCvm02902 | |
| Cisco UCS S3260 M4 Storage Server | CSCvm03351 | Cisco UCS B-Series M4 Blade Servers (except B260 B460) UCS Manager 3.2(3e) - (Available) UCS Manager 3.1(3j) - (Available) UCS Manager 2.2(8l) - (Available) Cisco UCS C-Series M4 Rack Servers - Managed (except C460) - UCS Manager 3.2(3e) - (Available) Cisco UCS S3260 M4 Storage Server - Managed - UCS Manager 3.2(3e) - (Available) Cisco UCS S3260 M4 Storage Server - Standalone - Cisco IMC 3.0(4e) - (Available) Cisco UCS S3260 M4 Storage Server - UCS Manager 3.1(3j) - (Available) Cisco UCS C-Series M4 Rack Servers Cisco IMC 3.0(4e) - (Available) Cisco IMC 2.0(10k) - (Available) Cisco UCS S3260 M4 Storage Server UCS Manager 3.2(3e) - (Available) UCS Manager 3.1(3j) - (Available) UCS Manager 2.2(8l) - (Available) Cisco UCS C-Series M4 Rack Servers - Managed (except C460) - UCS Manager 3.2(3e) - (Available) Cisco UCS S3260 M4 Storage Server - Managed - UCS Manager 3.2(3e) - (Available) Cisco UCS S3260 M4 Storage Server - Standalone - Cisco IMC 3.0(4e) - (Available) Cisco UCS S3260 M4 Storage |
| Voice and Unified Communications Devices | ||
| Cisco Remote Expert Mobile | CSCvm02994 | |
| Video, Streaming, TelePresence, and Transcoding Devices | ||
| Cisco Video Surveillance Media Server | CSCvm04841 | |
| Cisco Cloud Hosted Services | ||
| Cisco Metacloud | CSCvm02969 | |
1Cisco UCS M4 and M5 Rack Servers are used as part of the Cisco HyperFlex Solution.
The following Cisco products are considered not vulnerable to foreshadow or other identified L1 Terminal Fault-related vulnerabilities. Specific models in these product families may be affected and will be explicitly listed in the preceding Vulnerable Products section.
Data Center Interconnect Platforms
Industrial Routers
Cloud Networking Services
Mobile Internet Routers
Service Provider Core Routers
Service Provider Edge Routers
Small Business Routers
Virtual Routers
Blade Switches
Campus LAN Switches - Access
Campus LAN Switches - Core and Distribution
Campus LAN Switches - Digital Building
Data Center Switches
Industrial Ethernet Switches
InfiniBand Switches
LAN Switches - Small Business
Service Provider Switches - Aggregation
Service Provider Switches - Ethernet Access
Virtual Networking
Cloud Networking Services
WAN Switches
MGX Switches
Indoor Access Points
Outdoor and Industrial Access Points
Wireless LAN Controllers
Cisco Cloud-Hosted Products
Email Security
Firewalls
Firewall Management
Network Security
Network Visibility and Segmentation
Next-Generation Intrusion Prevention System (NGIPS)
Security Management
No other Cisco IP video products are known to be affected.
Cisco has investigated the following products and they are not considered to be affected by the vulnerabilities that are described in this advisory:
Collaboration and Social MediaThere are no workarounds that address this vulnerability.
For information about fixed software releases, consult the Cisco bug ID(s) at the top of this advisory.
When considering software upgrades, customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories and Alerts page, to determine exposure and a complete upgrade solution.
In all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.
The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.
CVE ID CVE-2018-3615 was reported to Intel by Raoul Strackx, Jo Van Bulck, Marina Minkin, Ofir Weisse, Daniel Genkin, Baris Kasikci, Frank Piessens, Mark Silberstein, Thomas F. Wenisch, and Yuval Yarom.
CVE ID CVE-2018-3620 and CVE-2018-3646 were discovered by Intel during the research of foreshadow.
To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.
| Version | Description | Section | Status | Date |
|---|---|---|---|---|
| 1.5 | Updated the Products Under Investigation, Confirmed Vulnerable, and Confirmed Not Vulnerable sections. | Affected Products | Interim | 2018-August-31 |
| 1.4 | Updated the Products Under Investigation, Confirmed Vulnerable, and Confirmed Not Vulnerable sections. | Affected Products | Interim | 2018-August-28 |
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