CVE-2023-20064CWE-862

Cisco IOS XR Software Bootloader Unauthenticated Information Disclosure Vulnerability

Medium · published March 9, 2023

CVSS v3.1
4.6
EPSS
0%
Percentile
16.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.6 · MEDIUM
Vector
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00258 · 16.6th percentile
Weakness
CWE-862 · Missing Authorization
Published
2023-03-09T00:00Z
EPSS history
Timeline
  • 09 MAR 00:00Z
    Cisco IOS XR Software Bootloader Unauthenticated Information Disclosure Vulnerability
    cvelistv5