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CVE-2019-1617— Cisco Nexus 9000 Series Switches Standalone NX-OS Mode Fibre Channel over Ethernet NPV Denial of Service Vulnerability

Quick assessment

Affected
Cisco Nexus 9000 Series Switches in Standalone NX-OS 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 Switches是美国思科（Cisco）公司的一款9000系列交换机。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 NX-OS Software中的Fibre Channel over Ethernet (FCoE) N-port Virtualization (NPV)协议的实现存在安全漏洞，该漏洞源于在fcoe-npv功能被卸载之后，程序错误地处理了FCoE数据包。攻击者可利用该漏洞造成拒绝服务。以下产品

AI Predicted 7.5 Difficulty: Easy EPSS 1.27% · P69

Possible ATT&CK Techniques 1 AI

T1014 · Rootkit
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I. Basic Information for CVE-2019-1617

Vulnerability Information
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Vulnerability Title
Cisco Nexus 9000 Series Switches Standalone NX-OS Mode Fibre Channel over Ethernet NPV Denial of Service Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the Fibre Channel over Ethernet (FCoE) N-port Virtualization (NPV) protocol implementation in Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition. The vulnerability is due to an incorrect processing of FCoE packets when the fcoe-npv feature is uninstalled. An attacker could exploit this vulnerability by sending a stream of FCoE frames from an adjacent host to an affected device. An exploit could allow the attacker to cause packet amplification to occur, resulting in the saturation of interfaces and a DoS condition. Nexus 9000 Series Switches in Standalone NX-OS Mode are affected running software versions prior to 7.0(3)I7(5) and 9.2(2).
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
动态管理代码资源的控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco NX-OS Software 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Nexus 9000 Series Switches是美国思科（Cisco）公司的一款9000系列交换机。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 NX-OS Software中的Fibre Channel over Ethernet (FCoE) N-port Virtualization (NPV)协议的实现存在安全漏洞，该漏洞源于在fcoe-npv功能被卸载之后，程序错误地处理了FCoE数据包。攻击者可利用该漏洞造成拒绝服务。以下产品
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 Nexus 9000 Series Switches in Standalone NX-OS Mode unspecified ~ 7.0(3)I7(5) -

II. Public POCs for CVE-2019-1617

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III. Intelligence Information for CVE-2019-1617

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Vendor Advisories for CVE-2019-1617 (2)

Same Patch Batch · Cisco · 2019-03-11 · 12 CVEs total

CVE-2019-1610 Cisco NX-OS Software CLI Command Injection Vulnerability (CVE-2019-1610)
CVE-2019-1611 Cisco FXOS and NX-OS Software CLI Command Injection Vulnerability (CVE-2019-1611)
CVE-2019-1612 Cisco NX-OS Software CLI Command Injection Vulnerability (CVE-2019-1612)
CVE-2019-1613 Cisco NX-OS Software CLI Command Injection Vulnerability (CVE-2019-1613)
CVE-2019-1614 Cisco NX-OS Software NX-API Command Injection Vulnerability
CVE-2019-1615 Cisco NX-OS Software Image Signature Verification Vulnerability
CVE-2019-1616 Cisco NX-OS Software Cisco Fabric Services Denial of Service Vulnerability
CVE-2019-1618 Cisco Nexus 9000 Series Switches Standalone NX-OS Mode Tetration Analytics Agent Arbitrary
CVE-2019-1690 Cisco Application Policy Infrastructure Controller IPv6 Link-Local Address Vulnerability
CVE-2019-1702 Cisco Enterprise Chat and Email Cross-Site Scripting Vulnerabilities
CVE-2019-1707 Cisco DNA Center Access Contract Stored Cross-Site Scripting Vulnerability

IV. Related Vulnerabilities

Same product: Nexus 9000 Series Switches in Standalone NX-OS Mode
Same vendor: Cisco
Same weakness: CWE-913

V. Comments for CVE-2019-1617

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