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CVE-2019-1596— Cisco NX-OS Software Bash Shell Privilege Escalation Vulnerability

Quick assessment

Affected
Cisco Nexus 3000 Series Switches
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Bash shell的实现存在权限许可和访问控制漏洞。本地攻击者可通过对设备进行身份验证并在Bash弹出框中输入特制的命令利用该漏洞将用户权限提升至root。以下产品受到影响：Cisco Nexus 3000 Series Switches；Nexus 3500 Platform Switches；Nexus 3600 Platform Switche

AI Predicted 7.8 Difficulty: Trivial EPSS 0.33% · P25

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2019-1596

Vulnerability Information
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Vulnerability Title
Cisco NX-OS Software Bash Shell Privilege Escalation Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the Bash shell implementation for Cisco NX-OS Software could allow an authenticated, local attacker to escalate their privilege level to root. The attacker must authenticate with valid user credentials. The vulnerability is due to incorrect permissions of a system executable. An attacker could exploit this vulnerability by authenticating to the device and entering a crafted command at the Bash prompt. A successful exploit could allow the attacker to escalate their privilege level to root. Nexus 3000 Series Switches are affected in versions prior to 7.0(3)I7(4). Nexus 3500 Platform Switches are affected in versions prior to 7.0(3)I7(4). Nexus 3600 Platform Switches are affected in versions prior to 7.0(3)F3(5). Nexus 9000 Series Switches in Standalone NX-OS Mode are affected in versions prior to 7.0(3)I7(4). Nexus 9500 R-Series Line Cards and Fabric Modules are affected in versions prior to 7.0(3)F3(5).
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 NX-OS Software 权限许可和访问控制问题漏洞
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Bash shell的实现存在权限许可和访问控制漏洞。本地攻击者可通过对设备进行身份验证并在Bash弹出框中输入特制的命令利用该漏洞将用户权限提升至root。以下产品受到影响：Cisco Nexus 3000 Series Switches；Nexus 3500 Platform Switches；Nexus 3600 Platform Switche
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 3000 Series Switches unspecified ~ 7.0(3)I7(4) -
Cisco Nexus 3500 Platform Switches unspecified ~ 7.0(3)I7(4) -
Cisco Nexus 3600 Platform Switches unspecified ~ 7.0(3)F3(5) -
Cisco Nexus 9000 Series Switches in Standalone NX-OS Mode unspecified ~ 7.0(3)I7(4) -
Cisco Nexus 9500 R-Series Line Cards and Fabric Modules unspecified ~ 7.0(3)F3(5) -

II. Public POCs for CVE-2019-1596

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III. Intelligence Information for CVE-2019-1596

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Vendor Advisories for CVE-2019-1596 (2)

Same Patch Batch · Cisco · 2019-03-07 · 5 CVEs total

CVE-2019-1597 Cisco FXOS and NX-OS Lightweight Directory Access Protocol Denial of Service Vulnerabiliti
CVE-2019-1598 Cisco FXOS and NX-OS Lightweight Directory Access Protocol Denial of Service Vulnerabiliti
CVE-2019-1599 Cisco NX-OS Software Netstack Denial of Service Vulnerability
CVE-2019-1600 Cisco FXOS and NX-OS Software Unauthorized Directory Access Vulnerability

IV. Related Vulnerabilities

Same product: Nexus 3000 Series Switches
Same vendor: Cisco
Same weakness: CWE-264

V. Comments for CVE-2019-1596

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