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CVE-2019-1920— Cisco IOS Access Points Software 802.11r Fast Transition Denial of Service Vulnerability

Quick assessment

Affected
Cisco Cisco Aironet Access Point 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 IOS Access Points（APs）Software是美国思科（Cisco）公司的一套专用于Cisco无线接入点设备的软件。 Cisco IOS APs Software中802.11r Fast Transition的实现存在输入验证错误漏洞。攻击者可利用该漏洞造成设备意外重启，导致拒绝服务。

AI Predicted 6.5 Difficulty: Easy EPSS 0.80% · P55
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I. Basic Information for CVE-2019-1920

Vulnerability Information
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Vulnerability Title
Cisco IOS Access Points Software 802.11r Fast Transition Denial of Service Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the 802.11r Fast Transition (FT) implementation for Cisco IOS Access Points (APs) Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected interface. The vulnerability is due to a lack of complete error handling condition for client authentication requests sent to a targeted interface configured for FT. An attacker could exploit this vulnerability by sending crafted authentication request traffic to the targeted interface, causing the device to restart unexpectedly.
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 IOS Access Points Software 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco IOS Access Points（APs）Software是美国思科（Cisco）公司的一套专用于Cisco无线接入点设备的软件。 Cisco IOS APs Software中802.11r Fast Transition的实现存在输入验证错误漏洞。攻击者可利用该漏洞造成设备意外重启，导致拒绝服务。
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 Aironet Access Point Software unspecified ~ 8.8.100.0 -

II. Public POCs for CVE-2019-1920

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III. Intelligence Information for CVE-2019-1920

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Vendor Advisories for CVE-2019-1920 (2)

Same Patch Batch · Cisco · 2019-07-17 · 8 CVEs total

CVE-2019-1917 Cisco Vision Dynamic Signage Director REST API Authentication Bypass Vulnerability
CVE-2019-1919 Cisco FindIT Network Management Software Static Credentials Vulnerability
CVE-2019-1942 Cisco Identity Services Engine Blind SQL Injection Vulnerability
CVE-2019-1941 Cisco Identity Services Engine Cross-Site Scripting Vulnerability
CVE-2019-1940 Cisco Industrial Network Director Web Services Management Agent Unauthorized Information D
CVE-2019-1923 Cisco Small Business SPA500 Series IP Phones Local Command Execution Vulnerability
CVE-2019-1943 Cisco Small Business Series Switches Open Redirect Vulnerability

IV. Related Vulnerabilities

Same product: Cisco Aironet Access Point Software
Same vendor: Cisco
Same weakness: CWE-20

V. Comments for CVE-2019-1920

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