CVE-2023-20064 Cisco IOS XR Software Bootloader Unauthenticated Information Disclosure Vulnerability

Medium 4.6 Published 9 Mar 2023 Updated 25 Oct 2024

An attacker with physical access can view sensitive files via GRUB bootloader commands during power cycling, potentially aiding further attacks.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2023-20064?

CVE-2023-20064 is a medium-severity vulnerability in Cisco Ios Xr, published on 9 Mar 2023. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A vulnerability in the GRand Unified Bootloader (GRUB) for Cisco IOS XR Software could allow an unauthenticated attacker with physical access to the device to view sensitive files on the console using the GRUB bootloader command line. This vulnerability is due to the inclusion of unnecessary commands within the GRUB environment that allow sensitive files to be viewed. An attacker could exploit this vulnerability by being connected to the console port of the Cisco IOS XR device when the device is power-cycled. A successful exploit could allow the attacker to view sensitive files that could be used to conduct additional attacks against the device.

Weakness: CWE-862

Which versions are affected by CVE-2023-20064?

It affects 1 product.

Products include Cisco Ios Xr.

How do I fix CVE-2023-20064?

No fix has been published for CVE-2023-20064 yet. Limit exposure of the affected software until one is available.

Is CVE-2023-20064 being exploited?

There is no known exploitation of CVE-2023-20064 in the wild and no public exploit code.

All Cisco Ios Xr vulnerabilities

Sources

Also known as GHSA-8vc7-mgh3-xppf.