cisco-sa-ios-xe-iot-codexec-k46EFF6q: Cisco IOS XE Software Hardware Initialization Routines Arbitrary Code Execution Vulnerability
First published: Wed Mar 24 2021(Updated: )
A vulnerability in the hardware initialization routines of Cisco IOS XE Software for Cisco 1100 Series Industrial Integrated Services Routers and Cisco ESR6300 Embedded Series Routers could allow an authenticated, local attacker to execute unsigned code at system boot time. This vulnerability is due to incorrect validations of parameters passed to a diagnostic script that is executed when the device boots up. An attacker could exploit this vulnerability by tampering with an executable file stored on a device. A successful exploit could allow the attacker to execute unsigned code at boot time and bypass the software image verification check part of the secure boot process of an affected device. To exploit this vulnerability, the attacker would need administrative level credentials (level 15) on the device. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link:https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-xe-iot-codexec-k46EFF6q This advisory is part of the March 2021 release of the Cisco IOS and IOS XE Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see Cisco Event Response: March 2021 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication.
Credit: by X.B. Cisco
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco IOS XE Software | ||
| Cisco 1100 Series Industrial Integrated Services Routers | ||
| Cisco ESR-6300-CON-K9 |
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Reference Links
Frequently Asked Questions
What is the severity of cisco-sa-ios-xe-iot-codexec-k46EFF6q?
The severity of cisco-sa-ios-xe-iot-codexec-k46EFF6q is high due to the potential for local code execution at system boot.
How do I fix cisco-sa-ios-xe-iot-codexec-k46EFF6q?
To fix cisco-sa-ios-xe-iot-codexec-k46EFF6q, upgrade to a fixed version of the affected Cisco IOS XE Software or router firmware.
Who is affected by cisco-sa-ios-xe-iot-codexec-k46EFF6q?
Users of Cisco 1100 Series Industrial Integrated Services Routers and Cisco ESR6300 Embedded Series Routers are affected by cisco-sa-ios-xe-iot-codexec-k46EFF6q.
What type of attackers can exploit cisco-sa-ios-xe-iot-codexec-k46EFF6q?
Authenticated, local attackers can exploit cisco-sa-ios-xe-iot-codexec-k46EFF6q to execute unsigned code.
What systems are impacted by cisco-sa-ios-xe-iot-codexec-k46EFF6q?
Cisco IOS XE Software and the specific router models Cisco 1100 Series and ESR6300 are impacted by cisco-sa-ios-xe-iot-codexec-k46EFF6q.
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