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CVE-2021-1450— Cisco AnyConnect Secure Mobility Client Denial of Service Vulnerability

Quick assessment

Affected
Cisco Cisco AnyConnect Secure Mobility Client
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 Anyconnect Secure Mobility Client是美国思科（Cisco）公司的一款用于安全连接的VPN客户端软件。 Cisco AnyConnect Secure Mobility Client 存在安全漏洞，攻击者可利用该漏洞在受影响的设备上造成拒绝服务。

CVSS 5.5 · Medium EPSS 0.23% · P13
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I. Basic Information for CVE-2021-1450

Vulnerability Information
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Vulnerability Title
Cisco AnyConnect Secure Mobility Client Denial of Service Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the interprocess communication (IPC) channel of Cisco AnyConnect Secure Mobility Client could allow an authenticated, local attacker to cause a denial of service (DoS) condition on an affected device. To exploit this vulnerability, the attacker would need to have valid credentials on the device. The vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending one or more crafted IPC messages to the AnyConnect process on an affected device. A successful exploit could allow the attacker to stop the AnyConnect process, causing a DoS condition on the device. Note: The process under attack will automatically restart so no action is needed by the user or admin.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco Anyconnect Secure Mobility Client 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Anyconnect Secure Mobility Client是美国思科（Cisco）公司的一款用于安全连接的VPN客户端软件。 Cisco AnyConnect Secure Mobility Client 存在安全漏洞，攻击者可利用该漏洞在受影响的设备上造成拒绝服务。
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 AnyConnect Secure Mobility Client n/a -

II. Public POCs for CVE-2021-1450

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III. Intelligence Information for CVE-2021-1450

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Vendor Advisories for CVE-2021-1450 (1)

Same Patch Batch · Cisco · 2021-02-24 · 13 CVEs total

CVE-2021-1388 10.0 CRITICAL Cisco ACI Multi-Site Orchestrator Application Services Engine Deployment Authentication By
CVE-2021-1361 9.8 CRITICAL Cisco NX-OS Software Unauthenticated Arbitrary File Actions Vulnerability
CVE-2021-1393 9.8 CRITICAL Cisco Application Services Engine Unauthorized Access Vulnerabilities
CVE-2021-1396 9.8 CRITICAL Cisco Application Services Engine Unauthorized Access Vulnerabilities
CVE-2021-1368 8.8 HIGH Cisco FXOS and NX-OS Software Unidirectional Link Detection Denial of Service and Arbitrar
CVE-2021-1230 8.6 HIGH Cisco Nexus 9000 Series Fabric Switches ACI Mode BGP Route Installation Denial of Service
CVE-2021-1387 8.6 HIGH Cisco NX-OS Software IPv6 Netstack Denial of Service Vulnerability
CVE-2021-1228 7.4 HIGH Cisco Nexus 9000 Series Fabric Switches ACI Mode Fabric Infrastructure VLAN Unauthorized A
CVE-2021-1229 5.8 MEDIUM Cisco NX-OS Software ICMP Version 6 Memory Leak Denial of Service Vulnerability
CVE-2021-1231 4.7 MEDIUM Cisco Nexus 9000 Series Fabric Switches ACI Mode Link Layer Discovery Protocol Port Denial
CVE-2021-1367 4.3 MEDIUM Cisco NX-OS Software Protocol Independent Multicast Denial of Service Vulnerability
CVE-2021-1227 Cisco NX-OS Software NX-API Cross-Site Request Forgery Vulnerability

IV. Related Vulnerabilities

Same product: Cisco AnyConnect Secure Mobility Client
Same vendor: Cisco
Same weakness: CWE-20

V. Comments for CVE-2021-1450

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