CVE-2023-20168
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I. Basic Information for CVE-2023-20168
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability in TACACS+ and RADIUS remote authentication for Cisco NX-OS Software could allow an unauthenticated, local attacker to cause an affected device to unexpectedly reload. This vulnerability is due to incorrect input validation when processing an authentication attempt if the directed request option is enabled for TACACS+ or RADIUS. An attacker could exploit this vulnerability by entering a crafted string at the login prompt of an affected device. A successful exploit could allow the attacker to cause the affected device to unexpectedly reload, resulting in a denial of service (DoS) condition.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Cisco NX-OS Software 输入验证错误漏洞
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存在安全漏洞，该漏洞源于TACACS+和RADIUS的身份验证过程存在安全漏洞。攻击者可利用该漏洞通过在登录提示符下输入特制的字符串来导致系统拒绝服务（DoS）。
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 | 4.2(1)SV1(4) | - |
II. Public POCs for CVE-2023-20168
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Cisco · 2023-08-23 · 6 CVEs total
| CVE-2023-20200 | 7.7 HIGH | Cisco 多款产品安全漏洞 |
| CVE-2023-20169 | 7.4 HIGH | Cisco 多款产品输入验证错误漏洞 |
| CVE-2023-20230 | 5.4 MEDIUM | Cisco Application Policy Infrastructure Controller 安全漏洞 |
| CVE-2023-20115 | 5.4 MEDIUM | Cisco Nexus Series Switches 安全漏洞 |
| CVE-2023-20234 | 4.4 MEDIUM | Cisco FXOS Software 安全漏洞 |
IV. Related Vulnerabilities
Same product: Cisco NX-OS Software
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Cisco Nexus 3000 and 9000 Series Switches IS-IS Protocol <TB - CVE-2025-20262
Cisco Nexus 3000 and 9000 Series Switches Protocol Independe - CVE-2025-20290
Cisco NXOS Software Sensitive Log Information Disclosure Vul
Same vendor: Cisco
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Cisco Unity Connection Server-Side Request Forgery Vulnerabi - CVE-2026-20167
Cisco IoT Field Network Director Remote Device Denial of Ser - CVE-2026-20169
Cisco IoT Field Network Director Command Injection Vulnerabi
Same weakness: CWE-120
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V. Comments for CVE-2023-20168
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