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CVE-2019-1891— Cisco Small Business Series Switches HTTP Denial of Service Vulnerability

Quick assessment

Affected
Cisco Cisco Small Business 300 Series Managed 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 Small Business 200 Series Managed Switches等都是美国思科（Cisco）公司的产品。Cisco Small Business 200 Series Managed Switches是一款200系列管理型交换机。Cisco?Small Business 300 Series Managed Switches是一款300系列管理型交换机。Cisco?Small Business 500 Series Managed Switches是一款500系列管理型交换

AI Predicted 7.5 Difficulty: Trivial EPSS 1.77% · P77

Possible ATT&CK Techniques 1 AI

T1272.001
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I. Basic Information for CVE-2019-1891

Vulnerability Information
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Vulnerability Title
Cisco Small Business Series Switches HTTP Denial of Service Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the web interface of Cisco Small Business 200, 300, and 500 Series Managed Switches could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper validation of requests sent to the web interface. An attacker could exploit this vulnerability by sending a malicious request to the web interface of an affected device. A successful exploit could allow the attacker to cause an unexpected reload of the device, resulting in a DoS condition.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco Small Business 200、300和500 Series Managed Switches 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Small Business 200 Series Managed Switches等都是美国思科（Cisco）公司的产品。Cisco Small Business 200 Series Managed Switches是一款200系列管理型交换机。Cisco?Small Business 300 Series Managed Switches是一款300系列管理型交换机。Cisco?Small Business 500 Series Managed Switches是一款500系列管理型交换
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 Small Business 300 Series Managed Switches unspecified ~ 1.4.10.6 -

II. Public POCs for CVE-2019-1891

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III. Intelligence Information for CVE-2019-1891

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Vendor Advisories for CVE-2019-1891 (1)

Same Patch Batch · Cisco · 2019-07-06 · 13 CVEs total

CVE-2019-1930 Cisco Firepower Management Center RSS Cross-Site Scripting Vulnerabilities
CVE-2019-1931 Cisco Firepower Management Center RSS Cross-Site Scripting Vulnerabilities
CVE-2019-1932 Cisco Advanced Malware Protection for Endpoints Windows Command Injection Vulnerability
CVE-2019-1933 Cisco Email Security Appliance Content Filter Bypass Vulnerability
CVE-2019-1921 Cisco Email Security Appliance Content Filter Bypass Vulnerability
CVE-2019-1922 Cisco IP Phone 7800 and 8800 Series Session Initiation Protocol Denial of Service Vulnerab
CVE-2019-1893 Cisco Enterprise NFV Infrastructure Software Command Injection Vulnerability
CVE-2019-1894 Cisco Enterprise NFV Infrastructure Software Arbitrary File Read and Write Vulnerability
CVE-2019-1909 Cisco IOS XR Software Border Gateway Protocol Denial of Service Vulnerability
CVE-2019-1911 Cisco Unified Communications Domain Manager Restricted Shell Escape Vulnerability
CVE-2019-1887 Cisco Unified Communications Manager Session Initiation Protocol Denial of Service Vulnera
CVE-2019-1892 Cisco Small Business Series Switches Memory Corruption Vulnerability

IV. Related Vulnerabilities

Same product: Cisco Small Business 300 Series Managed Switches
Same vendor: Cisco
Same weakness: CWE-20

V. Comments for CVE-2019-1891

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