CVE-2023-20064

published 2023-03-09

CVE-2023-20064: 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…

Priority P4 22 medium 4.6 CVSS 3.1

AV P AC L PR N UI N S U C H I N A N

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.

Affected

5 ranges

Vendor	Product	Version range	Fixed in
cisco	cisco_ios_xr_software	—	—
cisco	ios_xr	< 7.9.1	7.9.1
cisco	ios_xr	< 7.6.1	7.6.1
cisco	ios_xr	< 7.7.1	7.7.1
cisco	ios_xr	—	—

CVSS provenance

nvd v3.1 4.6 MEDIUM CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

vendor_cisco 4.6 MEDIUM

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