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Cisco Security Advisory

CPU Side-Channel Information Disclosure Vulnerabilities: May 2018

Medium
Advisory ID:
cisco-sa-20180521-cpusidechannel
First Published:
2018 May 22 01:00 GMT
Last Updated:
2018 August 31 20:24 GMT
Version 1.15:
Interim
Workarounds:
No workarounds available
CVE-2018-3639
CVE-2018-3640
CVE-2018-3639
CVE-2018-3640

Summary

  • On May 21, 2018, researchers disclosed two vulnerabilities that take advantage of the implementation of speculative execution of instructions on many modern microprocessor architectures to perform side-channel information disclosure attacks. These vulnerabilities could allow an unprivileged, local attacker, in specific circumstances, to read privileged memory belonging to other processes.

    The first vulnerability, CVE-2018-3639, is known as Spectre Variant 4 or SpectreNG. The second vulnerability, CVE-2018-3640, is known as Spectre Variant 3a. Both of these attacks are variants of the attacks disclosed in January 2018 and leverage cache-timing attacks to infer any disclosed data.

    To exploit either 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 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 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. Refer to 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://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180521-cpusidechannel

Affected Products

  • 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 are explained in the “Summary” section of this advisory.

    Vulnerable Products

    The following table lists Cisco products and cloud services that are affected by the vulnerabilities described in this advisory:

    Product Cisco Bug ID Fixed Release Availability
    Network Application, Service, and Acceleration
    Cisco Cloud Services Platform 2100 CSCvj63868 Consult the Cisco bug ID for details
    Cisco Wide Area Application Services (WAAS) CSCvj59144 Update to v6.x (Available)
    Cisco vBond Orchestrator - 18.2 (Available)
    Cisco vEdge 5000 - 18.2 (Available)
    Cisco vEdge Cloud - 18.2 (Available)
    Cisco vManage NMS -
    Cisco vSmart Controller - 18.2 (Available)
    Network Management and Provisioning
    Cisco Network Functions Virtualization Infrastructure Software CSCvj59161 Consult the Cisco bug ID for details
    Routing and Switching - Enterprise and Service Provider
    Cisco 4000 Series Integrated Services Routers (IOS XE Open Service Containers) CSCvj59152 Consult the Cisco bug ID for details
    Cisco 800 Series Industrial Integrated Services Routers CSCvj59153 Consult the Cisco bug ID for details
    Cisco ASR 1000 Series Aggregation Services Router with RP2 or RP3 (IOS XE Open Service Containers) CSCvj59152 Consult the Cisco bug ID for details
    Cisco ASR 1001-HX Series Aggregation Services Routers (IOS XE Open Service Containers) CSCvj59152 Consult the Cisco bug ID for details
    Cisco ASR 1001-X Series Aggregation Services Routers (IOS XE Open Service Containers) CSCvj59152 Consult the Cisco bug ID for details
    Cisco ASR 1002-HX Series Aggregation Services Routers (IOS XE Open Service Containers) CSCvj59152 Consult the Cisco bug ID for details
    Cisco ASR 1002-X Series Aggregation Services Routers (IOS XE Open Service Containers) CSCvj59152 Consult the Cisco bug ID for details
    Cisco ASR 9000 XR 64-bit Series Routers CSCvj59142 Consult the Cisco bug ID for details
    Cisco Application Policy Infrastructure Controller (APIC) CSCvj59131 Consult the Cisco bug ID for details
    Cisco CGR 1000 Compute Module (IOx feature) CSCvj59160 Consult the Cisco bug ID for details
    Cisco Catalyst 9300 Series Switches - IOx feature CSCvj59156 Consult the Cisco bug ID for details
    Cisco Catalyst 9400 Series Switches - IOx feature CSCvj59157 Consult the Cisco bug ID for details
    Cisco Catalyst 9500 Series Switches - IOx feature CSCvj59158 Consult the Cisco bug ID for details
    Cisco Cloud Services Router 1000V Series (IOS XE Open Service Containers) CSCvj59152 Consult the Cisco bug ID for details
    Cisco NCS 1000 Series Routers CSCvj59142 Consult the Cisco bug ID for details
    Cisco NCS 5000 Series Routers CSCvj59142 Consult the Cisco bug ID for details
    Cisco NCS 5500 Series Routers CSCvj59142 Consult the Cisco bug ID for details
    Cisco Nexus 3000 Series Switches CSCvj59136 Consult the Cisco bug ID for details
    Cisco Nexus 5000 Series Switches (OAC feature) CSCvj59138 Consult the Cisco bug ID for details
    Cisco Nexus 6000 Series Switches (OAC feature) CSCvj59135 Consult the Cisco bug ID for details
    Cisco Nexus 7000 Series Switches (OAC feature, Feature Bash) CSCvj59135 Consult the Cisco bug ID for details
    Cisco Nexus 9000 Series Switches - Standalone, NX-OS mode CSCvj59136 Consult the Cisco bug ID for details
    Cisco Virtual Application Policy Infrastructure Controller (APIC) CSCvj59131 Consult the Cisco bug ID for details
    Cisco XRv 9000 Series Routers CSCvj59142 Consult the Cisco bug ID for details
    Unified Computing
    Cisco C880 M4 Server CSCvj59127 Consult the Cisco bug ID for details
    Cisco C880 M5 Server CSCvj59127 Consult the Cisco bug ID for details
    Cisco Enterprise Network Compute System 5100 Series Servers CSCvj59121 Consult the Cisco bug ID for details
    Cisco Enterprise Network Compute System 5400 Series Servers CSCvj59121 Consult the Cisco bug ID for details
    Cisco HyperFlex with VMWare Hypervisor CSCvj59134 Consult the Cisco bug ID for details
    Cisco UCS B-Series M2 Blade Servers - Managed CSCvj59301 Cisco UCS B-Series M2 Blade Servers - Managed
    UCS Manager 2.2(8l) - (Available)
    UCS Manager 3.1(3j) - (Available)
    UCS Manager 3.2(3g) - (Available)
    Cisco UCS C-Series M2 Rack Servers - Managed
    UCS Manager 2.2(8l) - (Available)
    Cisco UCS B-Series M3 Blade Servers CSCvj54880 UCS Manager 2.2(8l) (Available)
    UCS Manager 3.1(3j) (Available)
    UCS Manager 3.2(3g) (Available)
    Cisco UCS B-Series M4 Blade Servers (except B260, B460) CSCvj54187 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 B-Series M5 Blade Servers CSCvj59266 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 B260 M4 Blade Server CSCvj54847 Cisco UCS B260 M4 Blade Server
    UCS Manager 3.2(3e) - (Available)
    UCS Manager 3.1(3j) - (Available)
    UCS Manager 2.2(8l) - (Available)
    Cisco UCS B460 M4 Blade Server
    UCS Manager 3.2(3e) - (Available)
    UCS Manager 3.1(3j) - Available
    UCS Manager 2.2(8l) - Available
    Cisco UCS C460 M4 Rack Server - Managed
    UCS Manager 3.2(3e) - (Available)
    UCS Manager 3.1(3j) - (Available)
    UCS Manager 2.2(8l) - (Available)
    Cisco UCS B460 M4 Blade Server CSCvj54847 Cisco UCS B260 M4 Blade Server
    UCS Manager 3.2(3e) - (Available)
    UCS Manager 3.1(3j) - (Available)
    UCS Manager 2.2(8l) - (Available)
    Cisco UCS B460 M4 Blade Server
    UCS Manager 3.2(3e) - (Available)
    UCS Manager 3.1(3j) - Available
    UCS Manager 2.2(8l) - Available
    Cisco UCS C460 M4 Rack Server - Managed
    UCS Manager 3.2(3e) - (Available)
    UCS Manager 3.1(3j) - (Available)
    UCS Manager 2.2(8l) - (Available)
    Cisco UCS C-Series M2 Rack Servers - Managed CSCvj59301 Cisco UCS B-Series M2 Blade Servers - Managed
    UCS Manager 2.2(8l) - (Available)
    UCS Manager 3.1(3j) - (Available)
    UCS Manager 3.2(3g) - (Available)
    Cisco UCS C-Series M2 Rack Servers - Managed
    UCS Manager 2.2(8l) - (Available)
    Cisco UCS C-Series M2 Rack Servers - Standalone CSCvj59309 Cisco IMC 1.4(3z09) - (Available)
    Cisco UCS C-Series M2 Rack Servers [EX processor family servers] - Standalone CSCvj59304 Cisco IMC 1.5(9f) - (Available)
    Cisco UCS C-Series M3 Rack Servers CSCvj59312 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 CSCvj59318 Cisco IMC 3.0(4e) - (Available)
    Cisco IMC 2.0(10k) - (Available)
    Cisco UCS C-Series M4 Rack Servers (except C460) -Managed 1 CSCvj54187 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 M5 Rack Servers - Managed 1 CSCvj59331 UCS Manager 3.2(3g) - (Available)
    Cisco UCS C-Series M5 Rack Servers -Standalone 1 CSCvj59266 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 C460 M4 Rack Server - Managed CSCvj54847 Cisco UCS B260 M4 Blade Server
    UCS Manager 3.2(3e) - (Available)
    UCS Manager 3.1(3j) - (Available)
    UCS Manager 2.2(8l) - (Available)
    Cisco UCS B460 M4 Blade Server
    UCS Manager 3.2(3e) - (Available)
    UCS Manager 3.1(3j) - Available
    UCS Manager 2.2(8l) - Available
    Cisco UCS C460 M4 Rack Server - Managed
    UCS Manager 3.2(3e) - (Available)
    UCS Manager 3.1(3j) - (Available)
    UCS Manager 2.2(8l) - (Available)
    Cisco UCS C460 M4 Rack Server - Standalone CSCvj59326 Cisco IMC 3.0(4e) - (Available)
    Cisco IMC 2.0(12h) - (Available)
    Cisco UCS E-Series M2 Servers CSCvj59121 Consult the Cisco bug ID for details
    Cisco UCS E-Series M3 Servers CSCvj59121 Consult the Cisco bug ID for details
    Cisco UCS S3260 M4 Storage Server CSCvj54187 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 Virtual Infrastructure Manager CSCvj75271 2.4.1
    2.2.24
    (Available)
    Voice and Unified Communications Devices
    Cisco Remote Expert Mobile CSCvj59167 Consult the Cisco bug ID for details
    Cisco Cloud Hosted Services
    Cisco Metacloud CSCvj59149 Consult the Cisco bug ID for details
    Cisco Threat Grid -

    1 Cisco UCS M4 and M5 Rack Servers are used as part of the Cisco HyperFlex Solution.

    Products Confirmed Not Vulnerable

    The following Cisco products are considered not vulnerable to Spectre Variant 3a or Spectre Variant 4. Specific models in these product families may be affected and will be explicitly listed in the preceding “Vulnerable Products” section.

    Routers

    Branch Routers

    • Cisco 4000 Series Integrated Services Routers
    • Cisco 1900 Series Integrated Services Routers
    • Cisco 1800 Series Integrated Services Routers
    • Cisco 1000 Series Integrated Services Routers
    • Cisco 800 Series Routers

    Data Center Interconnect Platforms

    • Cisco ASR 1000 Series Aggregation Services Routers
    • Cisco Carrier Routing System
    • Cisco Catalyst 6500 Series Switches

    Industrial Routers

    • Cisco 2000 Series Connected Grid Routers
    • Cisco 1000 Series Connected Grid Routers
    • Cisco 900 Series Industrial Routers
    • Cisco 800 Series Industrial Integrated Services Routers
    • Cisco 500 Series WPAN Industrial Routers
    • Cisco Wireless Gateway for LoRaWAN

    Cloud Networking Services

    • Cisco Cloud Services Router 1000V Series

    Mobile Internet Routers

    • Cisco 5900 Series Embedded Services Routers
    • Cisco MWR 2900 Series Mobile Wireless Routers

    Service Provider Core Routers

    • Cisco Carrier Routing System
    • Cisco Network Convergence System 6000 Series Routers

    Service Provider Edge Routers

    • Cisco 12000 Series Routers
    • Cisco ASR 1000 Series Aggregation Services Routers
    • Cisco ASR 920 Series Aggregation Services Router
    • Cisco ASR 901 Series Aggregation Services Routers
    • Cisco ASR 900 Series Aggregation Services Routers
    • Cisco XR 12000 Series Router
    • Cisco Network Convergence System 500 Series Routers

    Small Business Routers

    • Cisco 1900 Series Integrated Services Routers
    • Cisco 800 Series Routers
    • Cisco Small Business RV Series Routers

    Virtual Routers

    • Cisco Cloud Services Router 1000V Series
    • Cisco WAN Aggregation and Internet Edge Routers
    • Cisco ASR 1000 Series Aggregation Services Routers
    • Cisco Catalyst 6500 Series Switches

    WAN Optimization

    • Cisco Virtual Wide Area Application Services (vWAAS)
    • Cisco Wide Area Application Services (WAAS) Express
    • Cisco Wide Area Application Services (WAAS) Software

    Switches

    Blade Switches

    • Cisco Blade Switches for Dell
    • Cisco Blade Switches for FSC
    • Cisco Blade Switches for HP
    • Cisco Nexus 4000 Series Switches
    • Cisco Switch Modules for IBM
    • Cisco SFS Solutions for Blade Switches
    • Cisco SFS Solution for Dell

    Campus LAN Switches - Access

    • Cisco Catalyst 9400 Series Switches
    • Cisco Catalyst 9300 Series Switches
    • Cisco Catalyst 4500 Series Switches
    • Cisco Catalyst 3850 Series Switches
    • Cisco Catalyst 3750 Series Switches
    • Cisco Catalyst 3650 Series Switches
    • Cisco Catalyst 2960-L Series Switches
    • Cisco Catalyst 2960-Plus Series Switches
    • Cisco Catalyst 2960-X Series Switches
    • Cisco Edge Series
    • Cisco Meraki Cloud Managed Switches
    • Cisco Redundant Power Systems

    Campus LAN Switches - Core and Distribution

    • Cisco Catalyst 9500 Series Switches
    • Cisco Catalyst 6800 Series Switches
    • Cisco Catalyst 6500 Series Switches
    • Cisco Catalyst 6500 Virtual Switching System 1440
    • Cisco Catalyst 4900 Series Switches
    • Cisco Catalyst 4500 Series Switches
    • Cisco Catalyst 4500-X Series Switches
    • Cisco Catalyst 3850 Series Switches
    • Cisco Nexus 7000 Series Switches

    Campus LAN Switches - Digital Building

    • Cisco Catalyst 3560-CX Series Switches
    • Cisco Catalyst 2960-C Series Switches
    • Cisco Catalyst 2960-CX Series Switches
    • Cisco Catalyst 2960-L Series Switches
    • Cisco Catalyst Digital Building Series Switches

    Data Center Switches

    • Cisco Nexus 2000 Series Fabric Extenders
    • Cisco R Series Racks
    • Cisco RP Series Power Distribution Units
    • Cisco Data Center Network Management
    • Cisco Data Center Network Manager
    • Cisco Fabric Manager
    • Cisco Data Center Switches with Cisco IOS Software
    • Cisco Catalyst 6500 Series Switches
    • Cisco Catalyst 4900 Series Switches
    • Cisco Energy and Asset Management
    • Cisco Asset Management Suite
    • Cisco Energy Management Suite

    Industrial Ethernet Switches

    • Cisco 2500 Series Connected Grid Switches
    • Cisco Embedded Service 2020 Series Switches
    • Cisco Industrial Ethernet 5000 Series Switches
    • Cisco Industrial Ethernet 4010 Series Switches
    • Cisco Industrial Ethernet 4000 Series Switches
    • Cisco Industrial Ethernet 3010 Series Switches
    • Cisco Industrial Ethernet 3000 Series Switches
    • Cisco Industrial Ethernet 2000 Series Switches
    • Cisco Industrial Ethernet 2000U Series Switches
    • Cisco Industrial Ethernet 1000 Series Switches

    InfiniBand Switches

    • Cisco SFS 7000 Series InfiniBand Server Switches
    • Cisco SFS 3500 Series Multifabric Server Switches
    • Cisco SFS 3000 Series Multifabric Server Switches

    LAN Switches - Small Business

    • Cisco 550X Series Stackable Managed Switches
    • Cisco 350 Series Managed Switches
    • Cisco 350X Series Stackable Managed Switches
    • Cisco 250 Series Smart Switches
    • Cisco 220 Series Smart Switches
    • Cisco ESW2 Series Advanced Switches
    • Cisco Small Business 300 Series Managed Switches
    • Cisco Small Business 200 Series Smart Switches
    • Cisco Small Business 110 Series Unmanaged Switches
    • Cisco Small Business Smart Switches
    • Cisco Small Business Stackable Managed Switches
    • Cisco Small Business Unmanaged Switches

    Service Provider Switches - Aggregation

    • Cisco Catalyst 6500 Series Switches
    • Cisco Catalyst 4500 Series Switches
    • Cisco ME 4900 Series Ethernet Switches
    • Cisco ME 3800X Series Carrier Ethernet Switch Routers

    Service Provider Switches - Ethernet Access

    • Cisco Catalyst 3750 Metro Series Switches
    • Cisco ME 3600X Series Ethernet Access Switches
    • Cisco ME 3400 Series Ethernet Access Switches
    • Cisco ME 3400E Series Ethernet Access Switches
    • Cisco ME 1200 Series Carrier Ethernet Access Devices
    • Cisco Small Business Gigabit SP Switches

    Virtual Networking

    • Cisco Application Centric Infrastructure Virtual Edge
    • Cisco Application Virtual Switch
    • Cisco Cloud Services Platform 2100
    • Cisco Nexus 1000V InterCloud
    • Cisco Nexus 1000V Switch for KVM
    • Cisco Nexus 1000V Switch for Microsoft Hyper-V
    • Cisco Nexus 1000V Switch for VMware vSphere

    Cloud Networking Services

    • Cisco Prime Virtual Network Analysis Module (vNAM)
    • Cisco Virtual Security Gateway
    • Cisco Virtual Wide Area Application Services (vWAAS)

    WAN Switches

    • Cisco IGX 8400 Series Switches

    MGX Switches

    • Cisco MGX 8900 Series Switches
    • Cisco MGX 8850 Software
    • Cisco MGX 8800 Series Switches
    • Cisco MGX 8250 Software
    • Cisco MGX 8200 Series Edge Concentrators

    Wireless

    Indoor Access Points

    • Cisco Aironet 1815 Series Access Points
    • Cisco Aironet 2800 Series Access Points
    • Cisco Aironet 3800 Series Access Points
    • Cisco Aironet 4800 Access Point

    Outdoor and Industrial Access Points

    • Cisco Aironet 1540 Series Access Points
    • Cisco Aironet 1560 Series Access Points
    • Cisco Aironet 1570 Series Access Points

    Wireless LAN Controllers

    • Cisco 3504 Wireless LAN Controller
    • Cisco 5520 Wireless LAN Controller
    • Cisco 8540 Wireless LAN Controller
    • Cisco Virtual Wireless Controller
    • Cisco Meraki Cloud Managed Access Points

    Security

    Cisco Cloud-Hosted Products

    • Cisco AMP family of products and endpoint protection clients
    • Cisco Cloud Security
    • Cisco Cloudlock
    • Cisco Umbrella

    Email Security

    • Cisco Content Security Management Appliance
    • Cisco Email Security
    • Cisco Email Encryption
    • Cisco Email Encryption
    • Cisco Registered Envelope Service

    Firewalls

    • Cisco 3000 Series Industrial Security Appliances (ISA)
    • Cisco Meraki Cloud Managed Security Appliances
    • Cisco Adaptive Security Appliances (ASA)
    • Cisco Adaptive Security Virtual Appliance (ASAv)

    Firewall Management

    • Cisco Adaptive Security Device Manager
    • Cisco Firepower Device Manager
    • Cisco Firepower Management Center
    • Cisco Security Manager
    Next-Generation Firewalls (NGFW)
    • Cisco ASA 5500-X with FirePOWER Services
    • Cisco Firepower 9000 Series
    • Cisco Firepower 4100 Series
    • Cisco Firepower 2100 Series

    Network Security

    • Cisco VPN Internal Service Module for ISR G2

    Network Visibility and Segmentation

    • Cisco ISE Passive Identity Connector
    • Cisco Identity Services Engine (ISE)
    • Cisco Security Packet Analyzer
    • Cisco Stealthwatch Cloud
    • Cisco Stealthwatch Enterprise

    Next-Generation Intrusion Prevention System (NGIPS)

    • Cisco FirePOWER 8000 Series Appliances
    • Cisco FirePOWER 7000 Series Appliances

    Security Management

    • Cisco Firepower Management Center
    • Cisco Adaptive Security Device Manager
    • Cisco Content Security Management Appliance
    • Cisco Defense Orchestrator

    Unified Communications

    • Cisco Spark
    • Cisco Unified Communications Manager
    • Cisco Business Edition 6000 - 100x80
    • Cisco Business Edition 6000
    • Cisco Jabber - 100x80
    • Cisco Jabber
    • Cisco Expressway

    Customer Care

    • Cisco Unified Contact Center Express
    • Cisco Unified Contact Center Enterprise
    • Cisco Finesse
    • Cisco MediaSense

    Conferencing

    • Cisco Meeting Server
    • Cisco WebEx Meeting Center
    • Cisco WebEx Meetings Server
    • Cisco TelePresence Management Suite
    • Cisco TelePresence Server
    • Cisco TelePresence Conductor

    Collaboration Endpoints

    • Cisco 8800 Series IP Phones
    • Cisco 7800 Series IP Phones
    • Cisco 6900 Series IP Phones
    • Cisco 3900 Series SIP Phones
    • Cisco Desktop Collaboration Experience - DX600 Series
    • Cisco DX Series
    • Cisco TelePresence SX10 Quick Set
    • Cisco TelePresence MX Series - 100x80
    • Cisco TelePresence MX Series
    • Cisco TelePresence IX5000 Series

    Cisco Unified Computing Management Platforms

    • Cisco Intersight
    • Cisco UCS Manager
    • Cisco UCS Central
    • Cisco UCS Director
    • Cisco UCS Performance Manager

    IP Video

    • Cisco Access Edge
    • Cisco Cable Modem Termination Systems (CMTSs)
    • Cisco RF Switches
    • Cisco cBR Series Converged Broadband Routers
    • Cisco uBR10000 Series Universal Broadband Routers
    • Cisco uBR7225VXR Universal Broadband Routers
    • Cisco uBR7200 Series Universal Broadband Routers

    No other Cisco IP Video products are known to be affected.

    Internet of Things (IoT)

    • Cisco Jasper Control Center
    • Cisco IoT Management
    • Cisco Application Enablement
    • Cisco IoT Security
    • Cisco Kinetic
    • Cisco Extended Enterprise

    Products Considered Not Vulnerable After Investigation

    Cisco has investigated the following products, and they are not considered to be affected by the vulnerabilities that are described in this advisory:

    Network Application, Service, and Acceleration
    • Cisco 500 Series WPAN Industrial Routers (IOx feature)
    • Cisco DNA Center

    Network and Content Security Devices
    • Cisco Umbrella Virtual Appliance

    Network Management and Provisioning
    • Cisco Evolved Programmable Network Manager
    • Cisco Meeting Server

    Routing and Switching - Enterprise and Service Provider
    • Cisco 1000 Series Connected Grid Routers
    • Cisco Catalyst 3650 Series Switches - IOx feature
    • Cisco Industrial Ethernet 4000 Series Switches (IOx feature)
    • Cisco Nexus 4000 Series Blade Switches
    • Cisco Nexus 9000 Series Fabric Switches - ACI mode
    • Cisco c800 Series Integrated Services Routers

    Wireless
    • Cisco Wireless Gateway for LoRaWAN

    Cisco Cloud Hosted Services
    • Cisco Cloudlock
    • Cisco Hosted Collaboration Solution (HCS) for Government
    • Cisco Spark
    • Cisco Umbrella
    • Cisco WebEx Centers - Meeting Center, Training Center, Event Center, Support Center

Details

  • Modern CPU Speculative Store Bypass Information Disclosure Vulnerability

    A vulnerability due to the design of most modern CPUs could allow a local attacker to access sensitive information on a targeted system.

    The vulnerability is due to improper implementation of the speculative execution of instructions by the affected software. This vulnerability can be triggered by causing the CPU to attempt to perform a speculative memory read before currently queued memory writes are completed. An attacker could exploit this vulnerability by executing arbitrary code and performing a side-channel attack on the cache of the targeted system. A successful exploit could allow the attacker to read sensitive memory information.

    This vulnerability has been assigned the following CVE ID: CVE-2018-3639

    Modern CPU Rogue System Register Read Information Disclosure Vulnerability

    A vulnerability due to the design of most modern CPUs could allow a local attacker to access sensitive information on a targeted system.

    The vulnerability is due to improper implementation of the speculative execution of instructions by the affected software. This vulnerability can by triggered by causing an affected platform to perform speculative reads of system registers. An attacker could exploit this vulnerability by executing arbitrary code and performing a side-channel attack on the cache of the targeted system. A successful exploit could allow the attacker to read sensitive memory information.

    This vulnerability has been assigned the following CVE ID: CVE-2018-3640

Workarounds

  • There are no workarounds that address these vulnerabilities.

Fixed Software

  • 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.

Exploitation and Public Announcements

  • The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory.

Source

  • CVE ID CVE-2018-3639 was reported to Intel by Jann Horn of Google Project Zero (GPZ) and Ken Johnson of the Microsoft Security Response Center (MSRC).

    CVE ID CVE-2018-3640 was reported to Intel by Zdenek Sojka, Rudolf Marek, and Alex Zuepke from SYSGO AG.

Cisco Security Vulnerability Policy

  • 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.

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Revision History

  • Version Description Section Status Date
    1.15 Updated fixed software information for UCS M2 Rack Servers; added Cisco Hosted Collaboration Solution for Government to the Confirmed Not Vulnerable section Affected Products and Products Considered Not Vulnerable After Investigation Interim 2018-August-31
    1.14 Updated information about the status of fixes for multiple products listed in the Vulnerable Products table. Removed references to ongoing investigation. Affected Products and Products Considered Not Vulnerable After Investigation Interim 2018-August-07
    1.13 Updated Products Under Investigation, Vulnerable Products, and Confirmed Not Vulnerable. Affected Products Interim 2018-July-26
    1.12 Updated Products Under Investigation, Vulnerable Products, and Confirmed Not Vulnerable. Affected Products Interim 2018-July-06
    1.11 Updated information about the status of fixes for multiple products listed in the Vulnerable Products table. Affected Products Interim 2018-June-27
    1.10 Updated Products Under Investigation, Vulnerable Products, and Confirmed Not Vulnerable. Affected Products Interim 2018-June-22
    1.9 Updated Products Under Investigation, Vulnerable Products, and Confirmed Not Vulnerable. Affected Products Interim 2018-June-13
    1.8 Updated information about the status of fixes for multiple products listed in the Affected Products table. Affected Products Interim 2018-June-08
    1.7 Updated information about the status of fixes for multiple products listed in the Affected Products table. Affected Products Interim 2018-June-04
    1.6 In the Affected Products section, moved Cisco 880 M2 and M3 Servers to the Vulnerable Products section. Fix status information has been updated for multiple products. Affected Products Interim 2018-June-01
    1.5 In the Affected Products section, multiple products were moved from Under Investigation to Vulnerable. Cisco DNA Center was added to Under Investigation. Affected Products Interim 2018-May-31
    1.4 In the Affected Products section, multiple products were moved from Under Investigation to Vulnerable. Affected Products Interim 2018-May-29
    1.3 In the Affected Products section, moved Cisco Evolved Programmable Network Manager from Under Investigation to Products Confirmed Not Vulnerable. Affected Products Interim 2018-May-24
    1.2 In the Affected Products section, multiple products were moved from Under Investigation to Vulnerable. Affected Products Interim 2018-May-23
    1.1 In the Affected Products section, multiple products were moved from Under Investigation to Vulnerable or Confirmed Not Vulnerable Affected Products Interim 2018-May-22
    1.0 Initial public release. - Interim 2018-May-22
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