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CVE-2024-20371— Cisco Nexus 3550-F Switches Access Control List Programming Vulnerability

Quick assessment

Affected
Cisco Cisco Nexus 3550 System 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 3500 Series Switches是美国思科（Cisco）公司的一款3500系列交换机。 Cisco Nexus 3500 Series Switches存在权限许可和访问控制问题漏洞，该漏洞源于设备重启时ACL拒绝规则未得到正确执行。未经身份验证的远程攻击者将应被阻止的流量发送到受影响设备的管理接口。

CVSS 5.3 · Medium EPSS 0.46% · P38

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2024-20371

Vulnerability Information
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Vulnerability Title
Cisco Nexus 3550-F Switches Access Control List Programming Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the access control list (ACL) programming of Cisco Nexus 3550-F Switches could allow an unauthenticated, remote attacker to send traffic that should be blocked to the management interface of an affected device.  This vulnerability exists because ACL deny rules are not properly enforced at the time of device reboot. An attacker could exploit this vulnerability by attempting to send traffic to the management interface of an affected device. A successful exploit could allow the attacker to send traffic to the management interface of the affected device.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
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 Nexus 3500 Series Switches 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Nexus 3500 Series Switches是美国思科（Cisco）公司的一款3500系列交换机。 Cisco Nexus 3500 Series Switches存在权限许可和访问控制问题漏洞，该漏洞源于设备重启时ACL拒绝规则未得到正确执行。未经身份验证的远程攻击者将应被阻止的流量发送到受影响设备的管理接口。
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 Nexus 3550 System Software 3550-F_1.11.3 -

II. Public POCs for CVE-2024-20371

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III. Intelligence Information for CVE-2024-20371

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Vendor Advisories for CVE-2024-20371 (1)

Same Patch Batch · Cisco · 2024-11-06 · 25 CVEs total

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CVE-2024-20540 5.4 MEDIUM Cisco Unified Contact Center Management Portal Stored Cross-Site Scripting Vulnerability
CVE-2024-20445 5.3 MEDIUM Cisco IP Phone 7800, 8800, and 9800 Series Information Disclosure Vulnerability
CVE-2024-20533 4.8 MEDIUM Cisco IP Phone 6800, 7800, 8800, and 9800 Series with Multiplatform Firmware Stored Cross-
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CVE-2024-20539 4.8 MEDIUM Cisco Identity Services Engine Stored Cross-Site Scripting Vulnerability

Showing top 20 of 25 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same vendor: Cisco
Same weakness: CWE-264

V. Comments for CVE-2024-20371

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