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CVE-2021-1373— Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family CAPWAP Denial of Service Vulnerability

Quick assessment

Affected
Cisco Cisco IOS XE 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 Catalyst 9000是美国思科（Cisco）公司的一个交换机。 Cisco Catalyst 9000 Family Wireless Controllers 存在安全漏洞，该漏洞源于CAPWAP数据包验证不足。攻击者可利用该漏洞导致受影响设备的拒绝服务(DoS)状态。

CVSS 8.6 · High EPSS 1.49% · P73

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2021-1373

Vulnerability Information
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Vulnerability Title
Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family CAPWAP Denial of Service Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol processing of Cisco IOS XE Wireless Controller Software for the Cisco Catalyst 9000 Family Wireless Controllers could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition of an affected device. The vulnerability is due to insufficient validation of CAPWAP packets. An attacker could exploit this vulnerability by sending a malformed CAPWAP packet to an affected device. A successful exploit could allow the attacker to cause the affected device to crash and reload, resulting in a DoS condition.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
缓冲区上溢读取
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco Catalyst 9000 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Catalyst 9000是美国思科（Cisco）公司的一个交换机。 Cisco Catalyst 9000 Family Wireless Controllers 存在安全漏洞，该漏洞源于CAPWAP数据包验证不足。攻击者可利用该漏洞导致受影响设备的拒绝服务(DoS)状态。
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 IOS XE Software n/a -

II. Public POCs for CVE-2021-1373

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III. Intelligence Information for CVE-2021-1373

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Vendor Advisories for CVE-2021-1373 (1)

Same Patch Batch · Cisco · 2021-03-24 · 45 CVEs total

CVE-2021-1418 9.9 CRITICAL Cisco Jabber Desktop and Mobile Client Software Vulnerabilities
CVE-2021-1417 9.9 CRITICAL Cisco Jabber Desktop and Mobile Client Software Vulnerabilities
CVE-2021-1411 9.9 CRITICAL Cisco Jabber Desktop and Mobile Client Software Vulnerabilities
CVE-2021-1471 9.9 CRITICAL Cisco Jabber Desktop and Mobile Client Software Vulnerabilities
CVE-2021-1469 9.9 CRITICAL Cisco Jabber Desktop and Mobile Client Software Vulnerabilities
CVE-2021-1446 8.6 HIGH Cisco IOS XE Software DNS NAT Protocol Application Layer Gateway Denial of Service Vulnera
CVE-2021-1433 8.1 HIGH Cisco IOS XE SD-WAN Software vDaemon Buffer Overflow Vulnerability
CVE-2021-1451 8.1 HIGH Cisco IOS XE Software Easy Virtual Switching System Arbitrary Code Execution Vulnerability
CVE-2021-1392 7.8 HIGH Cisco IOS and IOS XE Software Common Industrial Protocol Privilege Escalation Vulnerabili
CVE-2021-1437 7.5 HIGH Cisco Aironet Access Points FlexConnect Upgrade Information Disclosure Vulnerability
CVE-2021-1431 7.5 HIGH Cisco IOS XE SD-WAN Software vDaemon Denial of Service Vulnerability
CVE-2021-1403 7.4 HIGH Cisco IOS XE Software Web UI Cross-Site WebSocket Hijacking Vulnerability
CVE-2021-1439 7.4 HIGH Cisco Aironet Access Points FlexConnect Multicast DNS Denial of Service Vulnerability
CVE-2021-1352 7.4 HIGH Cisco IOS XE Software DECnet Phase IV/OSI Denial of Service Vulnerability
CVE-2021-1432 7.3 HIGH Cisco IOS XE SD-WAN Software Arbitrary Command Execution Vulnerability
CVE-2021-1453 6.8 MEDIUM Cisco IOS XE Software for the Catalyst 9000 Family Arbitrary Code Execution Vulnerability
CVE-2021-1398 6.8 MEDIUM Cisco IOS XE Software Arbitrary Code Execution Vulnerability
CVE-2021-1452 6.8 MEDIUM Cisco IOS XE ROM Monitor Software for Cisco Industrial Switches OS Command Injection Vulne
CVE-2021-1449 6.7 MEDIUM Cisco Access Point Software Arbitrary Code Execution Vulnerability
CVE-2021-1441 6.7 MEDIUM Cisco IOS XE Software Hardware Initialization Routines Arbitrary Code Execution Vulnerabil

Showing top 20 of 45 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Cisco IOS XE Software
Same vendor: Cisco
Same weakness: CWE-126

V. Comments for CVE-2021-1373

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