CVE-2021-1584— Cisco Nexus 9000 Series Fabric Switches ACI Mode Privilege Escalation Vulnerability
Quick assessment
Affected
Cisco Cisco NX-OS System Software in ACI Mode
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 Nexus 9000 Series Fabric Switches是美国思科（Cisco）公司的一款9000系列光纤交换机。 Cisco Nexus 9000 Series Fabric Switches 存在安全漏洞，该漏洞源于CLI命令执行过程中限制不足造成的。攻击者可利用该漏洞以根用户身份访问底层操作系统。
Possible ATT&CK Techniques 2 AI
T1059 · Command and Scripting Interpreter T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2021-1584
Vulnerability Information
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Vulnerability Title
Cisco Nexus 9000 Series Fabric Switches ACI Mode Privilege Escalation Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in Cisco Nexus 9000 Series Fabric Switches in Application Centric Infrastructure (ACI) mode could allow an authenticated, local attacker to elevate privileges on an affected device. This vulnerability is due to insufficient restrictions during the execution of a specific CLI command. An attacker with administrative privileges could exploit this vulnerability by performing a command injection attack on the vulnerable command. A successful exploit could allow the attacker to access the underlying operating system as root.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco Nexus 9000 Series Fabric Switches 操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Nexus 9000 Series Fabric Switches是美国思科（Cisco）公司的一款9000系列光纤交换机。 Cisco Nexus 9000 Series Fabric Switches 存在安全漏洞，该漏洞源于CLI命令执行过程中限制不足造成的。攻击者可利用该漏洞以根用户身份访问底层操作系统。
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 System Software in ACI Mode | n/a | - |
|
II. Public POCs for CVE-2021-1584
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2021-1584 (1)
-
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-naci-mdvul-vrKVgNU vendor-advisory x_refsource_CISCO
Same Patch Batch · Cisco · 2021-08-25 · 15 CVEs total
| CVE-2021-1577 | 9.1 CRITICAL | Cisco Application Policy Infrastructure Controller Arbitrary File Read and Write Vulnerabi |
| CVE-2021-1578 | 8.8 HIGH | Cisco Application Policy Infrastructure Controller Privilege Escalation Vulnerability |
| CVE-2021-1588 | 8.6 HIGH | Cisco NX-OS Software MPLS OAM Denial of Service Vulnerability |
| CVE-2021-1587 | 8.6 HIGH | Cisco NX-OS Software VXLAN OAM (NGOAM) Denial of Service Vulnerability |
| CVE-2021-1586 | 8.6 HIGH | Cisco Nexus 9000 Series Fabric Switches ACI Mode Multi-Pod and Multi-Site TCP Denial of Se |
| CVE-2021-1523 | 8.6 HIGH | Cisco Nexus 9000 Series Fabric Switches ACI Mode Queue Wedge Denial of Service Vulnerabili |
| CVE-2021-1579 | 8.1 HIGH | Cisco Application Policy Infrastructure Controller App Privilege Escalation Vulnerability |
| CVE-2021-1581 | 6.5 MEDIUM | Cisco Application Policy Infrastructure Controller Command Injection and File Upload Vulne |
| CVE-2021-1580 | 6.5 MEDIUM | Cisco Application Policy Infrastructure Controller Command Injection and File Upload Vulne |
| CVE-2021-1591 | 5.8 MEDIUM | Cisco Nexus 9500 Series Switches Access Control List Bypass Vulnerability |
| CVE-2021-1582 | 5.4 MEDIUM | Cisco Application Policy Infrastructure Controller Stored Cross-Site Scripting Vulnerabili |
| CVE-2021-1590 | 5.3 MEDIUM | Cisco NX-OS Software system login block-for Denial of Service Vulnerability |
| CVE-2021-1583 | 4.4 MEDIUM | Cisco Nexus 9000 Series Fabric Switches ACI Mode Arbitrary File Read Vulnerability |
| CVE-2021-1592 | 4.3 MEDIUM | Cisco UCS Manager Software SSH Sessions Denial of Service Vulnerability |
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V. Comments for CVE-2021-1584
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