Mitel Product Security Advisory-18-0006

Side-Channel Analysis, Spectre Variant 4 and 3a

Advisory ID: 18-0006
First Issue Date: 2018-05-23
Last Updated: 2018-06-26
Revision: 2.0

Summary

On May 21, 2018, researchers disclosed two vulnerabilities that leverage speculative execution capabilities available with many modern processors. These vulnerabilities may allow an unprivileged local attacker to read memory belonging to other processes.

The vulnerabilities are referred to as Spectre Variant 4, (CVE-2018-3639, Speculative Store Bypass) and Spectre Variant 3a (CVE-2018-3640, Rogue System Register Read). Both are variants of the side-channel disclosure attacks disclosed earlier in January 2018.

To successfully exploit these vulnerabilities, the attack vector requires specially crafted malicious code executing on the same processor. Many Mitel products do not support installing custom software and are not directly vulnerable when running on dedicated systems. When running in a shared hosting environment, Mitel products may be impacted by malicious code on the host.

Security updates are being released by processor, operating system and virtualization providers. Early information indicates that security updates to mitigate these vulnerabilities may have negative performance penalties, the extent depending on the specific processor, operating system and application workload. Customers concerned about performance impacts are encouraged to review the available guidance as performance data becomes available. Mitel is investigating performance impacts and will provide further information as available.

Mitel recommends customers apply all available security updates after testing for potential performance impacts. For Mitel products which include the underlying operating system and/or processor, Mitel will be providing product updates.

Mitel is not aware of any active exploits of these vulnerabilities.

Mitel continues to investigate these vulnerabilities and information may change as the investigation continues. This advisory will be updated as information is available.

Affected Products

The following products have been identified as affected

Product Name Security BulletinLast Updated 
MiCloud Management Portal Updates pending2018-06-26
MiCollabUpdates pending 2018-06-26
MiCollab Client Updates pending 2018-06-26
Mitel Mass Notification Updates pending2018-06-26 
Mitel Open Integration Gateway Updates pending 2018-06-26 
MiVoice 5000 ISS and Virtual Updates pending2018-06-26 
MiVoice Border Gateway Updates pending2018-06-26 
MiVoice Business (server, virtual) Updates pending2018-06-26 
MiVoice Business Express Updates pending2018-06-26 
MiVoice Business Multi-instance Updates pending2018-06-26 
MiVoice Connect Virtual, SA100/400 Updates pending2018-06-26 
MiVoice Connect Virtual Mobility Router Updates pending2018-06-26 
MiVoice MX-ONE (server, virtual)  Updates pending 2018-06-26 
MiVoice MX-ONE Provisioning Manager Updates pending 2018-06-26 
MiVoice MX-ONE ASU-ll, ASU, ASU Lite Updates pending2018-06-26 
MiVoice MX-ONE Express Updates pending 2018-06-26 

Products Not Affected

The following products have been evaluated as not being affected:

Product Name Product Versions 
MiVoice 6900 Series All
MiVoice 6800 SIP Series All 
MiVoice 6700 SIP SeriesAll 
MiVoice 5300 IP Series All 
Mitel 5000 XS, XL, XD Gateways All 
MiVoice Business ICP 3300 MX, LX, AX, CX, Mxe All 
MiVoice MX-ONE MGU2 All 
MiVoice Office 250 HPM All 
MiVoice Office 250 PCBA DUAL T1/E1/PRI All 
MiVoice Office 415, 430, 470 Controller All 
ST, SG24A Voice Switches All 
SIP-DECT Basestation RFP 43 WLAN All 
SG Half-width Voice Switch All 

Products Under Investigation

The following Mitel application software products are not directly affected. Mitel continues to investigate these products and recommends customers review the related vendor guidance and apply security updates provided by their operating system, hypervisor and hardware suppliers. Customers are encouraged to review supplier guidance and consider possible negative performance impacts as performance data becomes available.

Product Name Product Versions 
CMG Software SuiteAll
 D.N.A. Application SuiteAll
 ER AdviserAll
 Mitel InAttendAll
MiContact Center BusinessAll
 MiContact Center EnterpriseAll
 MiContact Center OfficeAll
 MiVoice Call AccountingAll
 Mitel Management PortalAll
 MiVoice Call RecordingAll
 MiVoice Connect Headquarters, Windows DVSAll
MiVoice 6800 SIP Series All
 MiVoice 6700 SIP SeriesAll
 MiVoice 5300 IP SeriesAll
MiVoice 5000 ISS and VirtualAll
 Mitel 5000 XS, XL, XD GatewaysAll
 MiVoice Border GatewayAll
 MiVoice Business ICP 3300 MX, LX, AX, CX, MxeAll
 MiVoice Business (server, virtual)All
 MiVoice Business ExpressAll
MiVoice Business Multi-instance All
 MiVoice Call AccountingAll
 MiVoice Call RecordingAll
 MiVoice Connect Headquarters, Windows DVSAll
 MiVoice Connect Contact CenterAll
 MiVoice Office 470 CPU2-SAll
 Open Interfaces PlatformAll
 ST 14.2 Headquarters, Windows DVSAll
 TelepoAll

Risk Assessment
The risk of these vulnerabilities is deemed to be moderate to low for Mitel products. 

Successful exploit requires a local attacker to execute malicious code, requiring an account with privileges to install code or a separate system compromise. Exploit of these vulnerabilities may expose confidential information but is not expected to directly impact the integrity or availability of the system..

Mitigation / Recommended Action

For software not provided by Mitel, Mitel recommends customers apply available security updates as they become available. Customers concerned about performance impacts are encouraged to review the vendor guidance as performance data is available.

For all Mitel desktop and mobile client applications, Mitel recommends customers apply security updates as available for Windows, Mac, iOS and Android hosts and devices running Mitel software.

For Mitel products which include the underlying operating system and/or processor, Mitel will be providing product updates. This advisory will be updated when Mitel product security updates are released.

External References
https://www.us-cert.gov/ncas/alerts/TA18-141A

Related CVEs / CWEs / Advisories
CVE-2018-3640 (Speculative Store Bypass)
CVE-2018-3640 (Rogue System Register Read)

Revision History

Version Date Description 
2.0 2018-06-26  Added products impacted and not impacted
 1.02018-05-23Initial version

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