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CVE-2019-1591— Cisco Nexus 9000 Series Fabric Switches Application Centric Infrastructure Mode Shell Escape Vulnerability

Quick assessment

Affected
Cisco Cisco NX-OS Software for Nexus 9000 Series Fabric Switches 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 ACI Mode Switch Software 14.0(3d)之前版本中的CLI命令的实现存在权限许可和访问控制漏洞，该漏洞源于程序没有充分地过滤用户提交的输入。本地攻击者可通过向设备的CLI进行身份验证并发送命令利用该漏洞绕过被限制的shell，以root级别的权限执行任意命令。

AI Predicted 7.8 Difficulty: Easy EPSS 0.50% · P41
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I. Basic Information for CVE-2019-1591

Vulnerability Information
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Vulnerability Title
Cisco Nexus 9000 Series Fabric Switches Application Centric Infrastructure Mode Shell Escape Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in a specific CLI command implementation of Cisco Nexus 9000 Series ACI Mode Switch Software could allow an authenticated, local attacker to escape a restricted shell on an affected device. The vulnerability is due to insufficient sanitization of user-supplied input when issuing a specific CLI command with parameters on an affected device. An attacker could exploit this vulnerability by authenticating to the device CLI and issuing certain commands. A successful exploit could allow the attacker to escape the restricted shell and execute arbitrary commands with root-level privileges on the affected device. This vulnerability only affects Cisco Nexus 9000 Series ACI Mode Switches that are running a release prior to 14.0(3d).
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
权限、特权和访问控制
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco Nexus 9000 Series ACI Mode Switch Software 命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Nexus 9000 Series ACI Mode Switch Software 14.0(3d)之前版本中的CLI命令的实现存在权限许可和访问控制漏洞，该漏洞源于程序没有充分地过滤用户提交的输入。本地攻击者可通过向设备的CLI进行身份验证并发送命令利用该漏洞绕过被限制的shell，以root级别的权限执行任意命令。
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 for Nexus 9000 Series Fabric Switches ACI Mode 14.0(3d) -

II. Public POCs for CVE-2019-1591

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III. Intelligence Information for CVE-2019-1591

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Vendor Advisories for CVE-2019-1591 (2)

Same Patch Batch · Cisco · 2019-03-06 · 6 CVEs total

CVE-2019-1588 Cisco Nexus 9000 Series Fabric Switches Application-Centric Infrastructure Mode Arbitrary
CVE-2019-1593 Cisco NX-OS Software Bash Shell Role-Based Access Control Bypass Privilege Escalation Vuln
CVE-2019-1594 Cisco NX-OS Software 802.1X Extensible Authentication Protocol over LAN Denial of Service
CVE-2019-1595 Cisco Nexus 5600 and 6000 Series Switches Fibre Channel over Ethernet Denial of Service Vu
CVE-2019-1585 Cisco Nexus 9000 Series Fabric Switches Application-Centric Infrastructure Mode Privilege

IV. Related Vulnerabilities

Same product: Cisco NX-OS Software for Nexus 9000 Series Fabric Switches ACI Mode
Same vendor: Cisco
Same weakness: CWE-264

V. Comments for CVE-2019-1591

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