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CVE-2019-1601— Cisco NX-OS Software Unauthorized Filesystem Access Vulnerability

Quick assessment

Affected
Cisco MDS 9000 Series Multilayer 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中的文件系统权限存在访问控制错误漏洞，该漏洞源于程序没有执行较严格的文件系统权限。本地攻击者可通过访问并修改受限制的文件利用该漏洞使用配置文件内容，绕过身份验证并以任意用户身份进行登录。以下产品和版本受到影响：Cisco MDS 9000 Series Multilayer Switches 6.2(25)之前版本，8.1(1b)之前版本，8.3(1)之前

AI Predicted 7.8 Difficulty: Moderate EPSS 0.40% · P31
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I. Basic Information for CVE-2019-1601

Vulnerability Information
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Vulnerability Title
Cisco NX-OS Software Unauthorized Filesystem Access Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the filesystem permissions of Cisco NX-OS Software could allow an authenticated, local attacker to gain read and write access to a critical configuration file. The vulnerability is due to a failure to impose strict filesystem permissions on the targeted device. An attacker could exploit this vulnerability by accessing and modifying restricted files. A successful exploit could allow an attacker to use the content of this configuration file to bypass authentication and log in as any user of the device. MDS 9000 Series Multilayer Switches are affected in versions prior to 6.2(25), 8.1(1b), and 8.3(1). Nexus 3000 Series Switches are affected in versions prior to 7.0(3)I4(9) and 7.0(3)I7(4). Nexus 3500 Platform Switches are affected in versions prior to 6.0(2)A8(10) and 7.0(3)I7(4). Nexus 3600 Platform Switches are affected in versions prior to 7.0(3)F3(5). Nexus 2000, 5500, 5600, and 6000 Series Switches are affected in versions prior to 7.1(5)N1(1b) and 7.3(3)N1(1). Nexus 7000 and 7700 Series Switches are affected in versions prior to 6.2(22), 7.3(3)D1(1), and 8.2(3). Nexus 9000 Series Switches-Standalone are affected in versions prior to 7.0(3)I4(9) and 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
访问控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco NX-OS Software 访问控制错误漏洞
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中的文件系统权限存在访问控制错误漏洞，该漏洞源于程序没有执行较严格的文件系统权限。本地攻击者可通过访问并修改受限制的文件利用该漏洞使用配置文件内容，绕过身份验证并以任意用户身份进行登录。以下产品和版本受到影响：Cisco MDS 9000 Series Multilayer Switches 6.2(25)之前版本，8.1(1b)之前版本，8.3(1)之前
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 MDS 9000 Series Multilayer Switches unspecified ~ 6.2(25) -
Cisco Nexus 3000 Series Switches unspecified ~ 7.0(3)I4(9) -
Cisco Nexus 3500 Platform Switches unspecified ~ 6.0(2)A8(10) -
Cisco Nexus 3600 Platform Switches unspecified ~ 7.0(3)F3(5) -
Cisco Nexus 2000, 5500, 5600, and 6000 Series Switches unspecified ~ 7.1(5)N1(1b) -
Cisco Nexus 7000 and 7700 Series Switches unspecified ~ 6.2(22) -
Cisco Nexus 9000 Series Switches-Standalone unspecified ~ 7.0(3)I4(9) -
Cisco Nexus 9500 R-Series Line Cards and Fabric Modules unspecified ~ 7.0(3)F3(5) -

II. Public POCs for CVE-2019-1601

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III. Intelligence Information for CVE-2019-1601

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Vendor Advisories for CVE-2019-1601 (2)

Same Patch Batch · Cisco · 2019-03-08 · 9 CVEs total

CVE-2019-1605 Cisco NX-OS Software NX-API Arbitrary Code Execution Vulnerability
CVE-2019-1606 Cisco NX-OS Software CLI Command Injection Vulnerability (CVE-2019-1606)
CVE-2019-1607 Cisco NX-OS Software CLI Command Injection Vulnerability (CVE-2019-1607)
CVE-2019-1608 Cisco NX-OS Software CLI Command Injection Vulnerability (CVE-2019-1608)
CVE-2019-1609 Cisco NX-OS Software CLI Command Injection Vulnerability (CVE-2019-1609)
CVE-2019-1602 Cisco NX-OS Software Privilege Escalation Vulnerability
CVE-2019-1603 Cisco NX-OS Software Privilege Escalation Vulnerability
CVE-2019-1604 Cisco NX-OS Software Privilege Escalation Vulnerability

IV. Related Vulnerabilities

Same product: MDS 9000 Series Multilayer Switches
Same vendor: Cisco
Same weakness: CWE-284

V. Comments for CVE-2019-1601

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