CVE-2024-20397— Cisco NX-OS Software Image Verification Bypass Vulnerability
Quick assessment
Affected
Cisco Cisco NX-OS 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 NX-OS Software是美国思科（Cisco）公司的一套交换机使用的数据中心级操作系统软件。 Cisco NX-OS Software存在访问控制错误漏洞，该漏洞源于不安全的引导加载程序设置，允许攻击者绕过NX-OS映像签名验证并加载未经验证的软件。
Possible ATT&CK Techniques 3 AI
T1542 · Pre-OS Boot T1059 · Command and Scripting Interpreter T1542.002 · Component Firmware
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I. Basic Information for CVE-2024-20397
Vulnerability Information
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Vulnerability Title
Cisco NX-OS Software Image Verification Bypass Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the bootloader of Cisco NX-OS Software could allow an unauthenticated attacker with physical access to an affected device, or an authenticated, local attacker with administrative credentials, to bypass NX-OS image signature verification.
This vulnerability is due to insecure bootloader settings. An attacker could exploit this vulnerability by executing a series of bootloader commands. A successful exploit could allow the attacker to bypass NX-OS image signature verification and load unverified software.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco NX-OS Software 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco NX-OS Software是美国思科（Cisco）公司的一套交换机使用的数据中心级操作系统软件。 Cisco NX-OS Software存在访问控制错误漏洞，该漏洞源于不安全的引导加载程序设置，允许攻击者绕过NX-OS映像签名验证并加载未经验证的软件。
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 NX-OS Software | 8.2(5) | - |
|
| Cisco | Cisco NX-OS System Software in ACI Mode | 14.1(1j) | - |
|
| Cisco | Cisco Unified Computing System (Managed) | 4.0(4c) | - |
|
II. Public POCs for CVE-2024-20397
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2024-20397 (1)
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V. Comments for CVE-2024-20397
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