CVE-2019-1649: A vulnerability in the logic that handles access control to one of the hardware components in Cisco's proprietary Secure Boot implementation could allow an…

PriorityP432medium6.7CVSS 3.1

AVLACLPRHUINSUCHIHAH

EPSS

0.61%

45.7th percentile

A vulnerability in the logic that handles access control to one of the hardware components in Cisco's proprietary Secure Boot implementation could allow an authenticated, local attacker to write a modified firmware image to the component. This vulnerability affects multiple Cisco products that support hardware-based Secure Boot functionality. The vulnerability is due to an improper check on the area of code that manages on-premise updates to a Field Programmable Gate Array (FPGA) part of the Secure Boot hardware implementation. An attacker with elevated privileges and access to the underlying operating system that is running on the affected device could exploit this vulnerability by writing a modified firmware image to the FPGA. A successful exploit could either cause the device to become unusable (and require a hardware replacement) or allow tampering with the Secure Boot verification process, which under some circumstances may allow the attacker to install and boot a malicious software image. An attacker will need to fulfill all the following conditions to attempt to exploit this vulnerability: Have privileged administrative access to the device. Be able to access the underlying operating system running on the device; this can be achieved either by using a supported, documented mechanism or by exploiting another vulnerability that would provide an attacker with such access. Develop or have access to a platform-specific exploit. An attacker attempting to exploit this vulnerability across multiple affected platforms would need to research each one of those platforms and then develop a platform-specific exploit. Although the research process could be reused across different platforms, an exploit developed for a given hardware platform is unlikely to work on a different hardware platform.

Affected

35 ranges· showing 25

Vendor	Product	Version range	Fixed in
cisco	15454-m-wse-k9_firmware	< 11.1	11.1
cisco	asa_5500_firmware	< 1.1.15	1.1.15
cisco	asr_1001_firmware	—	—
cisco	cisco_routers	>= unspecified < 16.12.1	16.12.1
cisco	firepower_2100_firmware	< 2.6.1.134	2.6.1.134
cisco	firepower_4000_firmware	< 1.0.18	1.0.18
cisco	firepower_9000_firmware	< 1.0.18	1.0.18
cisco	ic3000-k9_firmware	< 1.0.2	1.0.2
cisco	industrial_security_appliances_3000_firmware	< 1.0.05	1.0.05
cisco	integrated_services_router_4200_firmware	< 1.1	1.1
cisco	integrated_services_router_4300_firmware	< 1.1	1.1
cisco	integrated_services_router_4400_firmware	< 1.1	1.1
cisco	ios	< 15.6\(3\)m7	15.6\(3\)m7
cisco	ios	< 15.6\(3\)m6b	15.6\(3\)m6b
cisco	ios	15.7 – 15.7\(3\)m5	—
cisco	ios	15.7 – 15.7\(3\)m4b	—
cisco	ios	>= 15.8 < 15.8\(3\)m3	15.8\(3\)m3
cisco	ios	>= 15.8 < 15.8\(3\)m2a	15.8\(3\)m2a
cisco	ios	>= 15.9 < 15.9\(3\)m	15.9\(3\)m
cisco	ios_xe	< 16.12.1	16.12.1
cisco	ios_xe	< 16.3.9	16.3.9
cisco	ios_xe	< 16.2.1	16.2.1
cisco	ios_xe	< 15.5\(1\)sy4	15.5\(1\)sy4
cisco	ios_xe	< 16.9.4	16.9.4
cisco	ios_xe	>= 16.10 < 16.12.1	16.12.1

CVSS provenance

nvdv3.16.7MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

nvdv3.06.7MEDIUMCVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

nvdv2.07.2HIGHAV:L/AC:L/Au:N/C:C/I:C/A:C

vendor_cisco6.7MEDIUM

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