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

Quick assessment

Affected
Cisco Cisco IOS XR Software
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Cisco IOS XR是美国思科（Cisco）公司的一套为其网络设备开发的操作系统。 Cisco IOS XR存在安全漏洞，该漏洞源于GRand Unified Bootloader (GRUB)中存在安全问题，攻击者利用该漏洞可以使用 GRUB 引导加载程序命令行查看控制台上的敏感文件，以下产品和版本受到影响：ASR 9000 Series Aggregation、Services Routers (64-bit)、IOS XR White box (IOSXRWBD)、IOS XRv 9000 Ro

CVSS 4.6 · Medium EPSS 0.26% · P17
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I. Basic Information for CVE-2023-20064

Vulnerability Information
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Vulnerability Title
Cisco IOS XR Software Bootloader Unauthenticated Information Disclosure Vulnerability
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco IOS XR 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco IOS XR是美国思科（Cisco）公司的一套为其网络设备开发的操作系统。 Cisco IOS XR存在安全漏洞，该漏洞源于GRand Unified Bootloader (GRUB)中存在安全问题，攻击者利用该漏洞可以使用 GRUB 引导加载程序命令行查看控制台上的敏感文件，以下产品和版本受到影响：ASR 9000 Series Aggregation、Services Routers (64-bit)、IOS XR White box (IOSXRWBD)、IOS XRv 9000 Ro
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Cisco Cisco IOS XR Software n/a -

II. Public POCs for CVE-2023-20064

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III. Intelligence Information for CVE-2023-20064

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Vendor Advisories for CVE-2023-20064 (1)

IV. Related Vulnerabilities

Same product: Cisco IOS XR Software
Same vendor: Cisco
Same weakness: CWE-862

V. Comments for CVE-2023-20064

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