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CVE-2021-1361— Cisco NX-OS Software Unauthenticated Arbitrary File Actions 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等都是美国思科（Cisco）公司的产品。Cisco NX-OS Software是一套交换机使用的数据中心级操作系统软件。Cisco Nexus 3000 Series Switches是一款3000系列交换机。Cisco Nexus 9000 Series Switches是一款9000系列交换机。 Cisco Nexus 3000 Series Switches and Cisco Nexus 9000 Series Switches 存在安全漏洞，该漏洞允许未

CVSS 9.8 · Critical EPSS 1.63% · P75
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I. Basic Information for CVE-2021-1361

Vulnerability Information
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Vulnerability Title
Cisco NX-OS Software Unauthenticated Arbitrary File Actions Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the implementation of an internal file management service for Cisco Nexus 3000 Series Switches and Cisco Nexus 9000 Series Switches in standalone NX-OS mode that are running Cisco NX-OS Software could allow an unauthenticated, remote attacker to create, delete, or overwrite arbitrary files with root privileges on the device. This vulnerability exists because TCP port 9075 is incorrectly configured to listen and respond to external connection requests. An attacker could exploit this vulnerability by sending crafted TCP packets to an IP address that is configured on a local interface on TCP port 9075. A successful exploit could allow the attacker to create, delete, or overwrite arbitrary files, including sensitive files that are related to the device configuration. For example, the attacker could add a user account without the device administrator knowing.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对外部实体的文件或目录可访问
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco Nexus 3000 Series Switches and Cisco Nexus 9000 Series Switches 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco NX-OS Software等都是美国思科（Cisco）公司的产品。Cisco NX-OS Software是一套交换机使用的数据中心级操作系统软件。Cisco Nexus 3000 Series Switches是一款3000系列交换机。Cisco Nexus 9000 Series Switches是一款9000系列交换机。 Cisco Nexus 3000 Series Switches and Cisco Nexus 9000 Series Switches 存在安全漏洞，该漏洞允许未
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 n/a -

II. Public POCs for CVE-2021-1361

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III. Intelligence Information for CVE-2021-1361

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Vendor Advisories for CVE-2021-1361 (1)

Same Patch Batch · Cisco · 2021-02-24 · 13 CVEs total

CVE-2021-1388 10.0 CRITICAL Cisco ACI Multi-Site Orchestrator Application Services Engine Deployment Authentication By
CVE-2021-1393 9.8 CRITICAL Cisco Application Services Engine Unauthorized Access Vulnerabilities
CVE-2021-1396 9.8 CRITICAL Cisco Application Services Engine Unauthorized Access Vulnerabilities
CVE-2021-1368 8.8 HIGH Cisco FXOS and NX-OS Software Unidirectional Link Detection Denial of Service and Arbitrar
CVE-2021-1230 8.6 HIGH Cisco Nexus 9000 Series Fabric Switches ACI Mode BGP Route Installation Denial of Service
CVE-2021-1387 8.6 HIGH Cisco NX-OS Software IPv6 Netstack Denial of Service Vulnerability
CVE-2021-1228 7.4 HIGH Cisco Nexus 9000 Series Fabric Switches ACI Mode Fabric Infrastructure VLAN Unauthorized A
CVE-2021-1229 5.8 MEDIUM Cisco NX-OS Software ICMP Version 6 Memory Leak Denial of Service Vulnerability
CVE-2021-1450 5.5 MEDIUM Cisco AnyConnect Secure Mobility Client Denial of Service Vulnerability
CVE-2021-1231 4.7 MEDIUM Cisco Nexus 9000 Series Fabric Switches ACI Mode Link Layer Discovery Protocol Port Denial
CVE-2021-1367 4.3 MEDIUM Cisco NX-OS Software Protocol Independent Multicast Denial of Service Vulnerability
CVE-2021-1227 Cisco NX-OS Software NX-API Cross-Site Request Forgery Vulnerability

IV. Related Vulnerabilities

Same product: Cisco NX-OS Software
Same vendor: Cisco
Same weakness: CWE-552

V. Comments for CVE-2021-1361

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