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    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 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.

    Published:Mar 9, 2023
    Last Modified:Nov 21, 2024
    EPS:Mar 9, 2023
    EPSS Score:0.00081
    CVSS Score:4.6

    Affected Products

    Vendor
    Cisco
    Product
    Asr 9000v-v2
    Vendor
    Cisco
    Product
    Asr 9001
    Vendor
    Cisco
    Product
    Asr 9006
    Vendor
    Cisco
    Product
    Asr 9010
    Vendor
    Cisco
    Product
    Asr 9901
    Vendor
    Cisco
    Product
    Asr 9902
    Vendor
    Cisco
    Product
    Asr 9903
    Vendor
    Cisco
    Product
    Asr 9904
    Vendor
    Cisco
    Product
    Asr 9906
    Vendor
    Cisco
    Product
    Asr 9910
    Vendor
    Cisco
    Product
    Asr 9912
    Vendor
    Cisco
    Product
    Asr 9922
    Vendor
    Cisco
    Product
    Ios Xr
    Vendor
    Cisco
    Product
    Ios Xrv 9000
    Vendor
    Cisco
    Product
    Nc57-18dd-se
    Vendor
    Cisco
    Product
    Nc57-24dd
    Vendor
    Cisco
    Product
    Nc57-36h-se
    Vendor
    Cisco
    Product
    Nc57-36h6d-s
    Vendor
    Cisco
    Product
    Ncs 1001
    Vendor
    Cisco
    Product
    Ncs 1002
    Vendor
    Cisco
    Product
    Ncs 1004
    Vendor
    Cisco
    Product
    Ncs 5001
    Vendor
    Cisco
    Product
    Ncs 5002
    Vendor
    Cisco
    Product
    Ncs 5011
    Vendor
    Cisco
    Product
    Ncs 540
    Vendor
    Cisco
    Product
    Ncs 540 Fronthaul
    Vendor
    Cisco
    Product
    Ncs 5501
    Vendor
    Cisco
    Product
    Ncs 5501-se
    Vendor
    Cisco
    Product
    Ncs 5502
    Vendor
    Cisco
    Product
    Ncs 5502-se
    Vendor
    Cisco
    Product
    Ncs 5508
    Vendor
    Cisco
    Product
    Ncs 5516
    Vendor
    Cisco
    Product
    Ncs 560-4
    Vendor
    Cisco
    Product
    Ncs 560-7
    Vendor
    Cisco
    Product
    Ncs 57b1-5dse-sys
    Vendor
    Cisco
    Product
    Ncs 57b1-6d24-sys
    Vendor
    Cisco
    Product
    Ncs 57c1-48q6-sys
    Vendor
    Cisco
    Product
    Ncs 57c3-mod-sys
    Vendor
    Cisco
    Product
    Ncs 57c3-mods-sys
    Vendor
    Cisco
    Product
    Ncs 6000

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-862 Missing Authorization

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-665 Exploitation of Thunderbolt Protection Flaws

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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High