CVE-2024-20456

2024-07-1016:15:03

CWE-732

cisco

web.nvd.nist.gov

cisco

ios xr

vulnerability

unauthorized software

CVSS3

6.7

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS

Percentile

9.3%

JSON

A vulnerability in the boot process of Cisco IOS XR Software could allow an authenticated, local attacker with high privileges to bypass the Cisco Secure Boot functionality and load unverified software on an affected device. To exploit this successfully, the attacker must have root-system privileges on the affected device.

This vulnerability is due to an error in the software build process. An attacker could exploit this vulnerability by manipulating the system’s configuration options to bypass some of the integrity checks that are performed during the booting process. A successful exploit could allow the attacker to control the boot configuration, which could enable them to bypass of the requirement to run Cisco signed images or alter the security properties of the running system.

Affected configurations

Vulners

Node

ciscoios_xr_softwareMatch24.2.1

VendorProductVersionCPE
ciscoios_xr_software24.2.1cpe:2.3:o:cisco:ios_xr_software:24.2.1:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
cisco	ios_xr_software	24.2.1	cpe:2.3:o:cisco:ios_xr_software:24.2.1:::::::*

CNA Affected

[
  {
    "vendor": "Cisco",
    "product": "Cisco IOS XR Software",
    "versions": [
      {
        "version": "24.2.1",
        "status": "affected"
      }
    ]
  }
]