CVE-2019-1968— Cisco NX-OS Software NX-API Denial of Service Vulnerability
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I. Basic Information for CVE-2019-1968
Vulnerability Information
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Vulnerability Title
Cisco NX-OS Software NX-API Denial of Service Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability in the NX-API feature of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause an NX-API system process to unexpectedly restart. The vulnerability is due to incorrect validation of the HTTP header of a request that is sent to the NX-API. An attacker could exploit this vulnerability by sending a crafted HTTP request to the NX-API on an affected device. A successful exploit could allow the attacker to cause a denial of service (DoS) condition in the NX-API service; however, the NX-OS device itself would still be available and passing network traffic. Note: The NX-API feature is disabled by default.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
输入验证不恰当
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中的NX-API功能存在输入验证错误漏洞，该漏洞源于程序没有正确验证发送到NX-API的请求的HTTP头。远程攻击者可通过发送特制的HTTP请求利用该漏洞造成拒绝服务。以下产品及版本受到影响：Cisco MDS 9000 Series Multilayer Switches；Nexus 3000 Series Switches；Nexus 3500 Pla
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 6.0(2)A4(1) | unspecified ~ 8.3(2) | - |
II. Public POCs for CVE-2019-1968
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190828-nxos-api-dosvendor-advisoryx_refsource_CISCO
- https://nvd.nist.gov/vuln/detail/CVE-2019-1968
Same Patch Batch · Cisco · 2019-08-29 · 5 CVEs total
| CVE-2019-1967 | Cisco NX-OS Software Network Time Protocol Denial of Service Vulnerability | |
| CVE-2019-1966 | Cisco Unified Computing System Fabric Interconnect root Privilege Escalation Vulnerability | |
| CVE-2019-1977 | Cisco Nexus 9000 Series Fabric Switches ACI Mode Border Leaf Endpoint Learning Vulnerabili | |
| CVE-2019-1969 | Cisco NX-OS Software SNMP Access Control List Configuration Name Bypass Vulnerability |
IV. Related Vulnerabilities
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-20
V. Comments for CVE-2019-1968
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