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CVE-2019-1965— Cisco NX-OS Software Remote Management Memory Leak Denial of Service 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 Nexus 3000 Series Switches等都是美国思科（Cisco）公司的产品。Cisco Nexus 3000 Series Switches是一款3000系列交换机。Cisco Nexus 3500 Platform Switches是一款3500系列平台交换机。Cisco MDS 9000 Series Multilayer Switches是一款MDS 9000系列多层交换机。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 N

AI Predicted 5.9 Difficulty: Moderate EPSS 1.53% · P74

Possible ATT&CK Techniques 1 AI

T1619 · Cloud Storage Object Discovery
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I. Basic Information for CVE-2019-1965

Vulnerability Information
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Vulnerability Title
Cisco NX-OS Software Remote Management Memory Leak Denial of Service Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the Virtual Shell (VSH) session management for Cisco NX-OS Software could allow an authenticated, remote attacker to cause a VSH process to fail to delete upon termination. This can lead to a build-up of VSH processes that overtime can deplete system memory. When there is no system memory available, this can cause unexpected system behaviors and crashes. The vulnerability is due to the VSH process not being properly deleted when a remote management connection to the device is disconnected. An attacker could exploit this vulnerability by repeatedly performing a remote management connection to the device and terminating the connection in an unexpected manner. A successful exploit could allow the attacker to cause the VSH processes to fail to delete, which can lead to a system-wide denial of service (DoS) condition. The attacker must have valid user credentials to log in to the device using the remote management connection.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco NX-OS Software 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Nexus 3000 Series Switches等都是美国思科（Cisco）公司的产品。Cisco Nexus 3000 Series Switches是一款3000系列交换机。Cisco Nexus 3500 Platform Switches是一款3500系列平台交换机。Cisco MDS 9000 Series Multilayer Switches是一款MDS 9000系列多层交换机。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 N
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 unspecified ~ 8.4(1) -

II. Public POCs for CVE-2019-1965

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III. Intelligence Information for CVE-2019-1965

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Vendor Advisories for CVE-2019-1965 (1)

Same Patch Batch · Cisco · 2019-08-28 · 5 CVEs total

CVE-2019-1964 Cisco NX-OS Software IPv6 Denial of Service Vulnerability
CVE-2019-1962 Cisco NX-OS Software Cisco Fabric Services over IP Denial of Service Vulnerability
CVE-2019-1963 Cisco FXOS and NX-OS Software Authenticated Simple Network Management Protocol Denial of S
CVE-2019-12643 Cisco REST API Container for IOS XE Software Authentication Bypass Vulnerability

IV. Related Vulnerabilities

Same product: Cisco NX-OS Software
Same vendor: Cisco
Same weakness: CWE-400

V. Comments for CVE-2019-1965

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