CVE-2023-20236: High severity Cisco IOS XR vulnerability
A vulnerability in the iPXE boot function of Cisco IOS XR software could allow an authenticated, local attacker to install an unverified software image on an affected device. This vulnerability is due to insufficient image verification. An attacker could exploit this vulnerability by manipulating the boot parameters for image verification during the iPXE boot process on an affected device. A successful exploit could allow the attacker to boot an unverified software image on the affected device.
Affected Software
Event History
Frequently Asked Questions
What is CVE-2023-20236?
CVE-2023-20236 is a vulnerability in the iPXE boot function of Cisco IOS XR software that could allow an authenticated, local attacker to install an unverified software image on an affected device.
How severe is CVE-2023-20236?
CVE-2023-20236 has a severity score of 7.8, which is considered high.
What software is affected by CVE-2023-20236?
Cisco IOS XR software up to version 7.10.1 is affected by CVE-2023-20236.
How can an attacker exploit CVE-2023-20236?
An attacker can exploit CVE-2023-20236 by manipulating the image verification process.
Where can I find more information about CVE-2023-20236?
You can find more information about CVE-2023-20236 on the Cisco Security Advisory page: [link](https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-ipxe-sigbypass-pymfyqgB)