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CVE-2024-20502

Quick assessment

Affected
Cisco Cisco Meraki MX Firmware
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 VPN是美国思科（Cisco）公司的一种虚拟专用网络（VPN）客户端，它支持远程用户通过 SSL VPN 和 IPSec VPN 连接到企业网络。 Cisco AnyConnect VPN存在安全漏洞，该漏洞源于 VPN 身份验证过程中使用的处理程序的熵值较弱以及同一过程中存在的竞争条件。允许未经身份验证的远程攻击者对受影响设备上的 AnyConnect VPN 服务造成拒绝服务。

CVSS 5.8 · Medium EPSS 0.52% · P42

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2024-20502

Vulnerability Information
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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the Cisco AnyConnect VPN server of Cisco Meraki MX and Cisco Meraki Z Series Teleworker Gateway devices could allow an unauthenticated, remote attacker to cause a DoS condition on an affected device. This vulnerability is due to insufficient resource management while establishing SSL VPN sessions. An attacker could exploit this vulnerability by sending a series of crafted HTTPS requests to the VPN server of an affected device. A successful exploit could allow the attacker to cause the Cisco AnyConnect VPN server to stop accepting new connections, preventing new SSL VPN connections from being established. Existing SSL VPN sessions are not impacted. Note: When the attack traffic stops, the Cisco AnyConnect VPN server recovers gracefully without requiring manual intervention.
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:L
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco AnyConnect VPN 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco AnyConnect VPN是美国思科（Cisco）公司的一种虚拟专用网络（VPN）客户端，它支持远程用户通过 SSL VPN 和 IPSec VPN 连接到企业网络。 Cisco AnyConnect VPN存在安全漏洞，该漏洞源于 VPN 身份验证过程中使用的处理程序的熵值较弱以及同一过程中存在的竞争条件。允许未经身份验证的远程攻击者对受影响设备上的 AnyConnect VPN 服务造成拒绝服务。
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 Meraki MX Firmware N/A -

II. Public POCs for CVE-2024-20502

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III. Intelligence Information for CVE-2024-20502

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Vendor Advisories for CVE-2024-20502 (1)

Same Patch Batch · Cisco · 2024-10-02 · 32 CVEs total

CVE-2024-20432 9.9 CRITICAL Cisco Nexus Dashboard Fabric Controller Web UI Command Injection Vulnerability
CVE-2024-20393 8.8 HIGH Cisco RV340, RV340W, RV345, and RV345P Dual WAN Gigabit VPN Routers Privilege Escalation V
CVE-2024-20449 8.8 HIGH Cisco Nexus Dashboard Fabric Controller Remote Code Execution Vulnerability
CVE-2024-20501 8.6 HIGH Cisco AnyConnect VPN 安全漏洞
CVE-2024-20499 8.6 HIGH Cisco Meraki Z Series Teleworker Gateway和Cisco Meraki MX 安全漏洞
CVE-2024-20498 8.6 HIGH Cisco Meraki Z Series Teleworker Gateway和Cisco Meraki MX 安全漏洞
CVE-2024-20524 6.8 MEDIUM Cisco Small Business RV042, RV042G, RV320, and RV325 Denial of Service Vulnerabilities
CVE-2024-20523 6.8 MEDIUM Cisco Small Business RV042, RV042G, RV320, and RV325 Denial of Service Vulnerabilities
CVE-2024-20516 6.8 MEDIUM Cisco Small Business RV042, RV042G, RV320, and RV325 Denial of Service Vulnerabilities
CVE-2024-20517 6.8 MEDIUM Cisco Small Business RV042, RV042G, RV320, and RV325 Denial of Service Vulnerabilities
CVE-2024-20515 6.5 MEDIUM Cisco Identity Services Engine Information Disclosure Vulnerability
CVE-2024-20365 6.5 MEDIUM Cisco Integrated Management Controller Redfish Command Injection Vulnerability
CVE-2024-20519 6.5 MEDIUM Cisco Small Business RV042, RV042G, RV320, and RV325 Remote Command Execution Vulnerabilit
CVE-2024-20522 6.5 MEDIUM Cisco Small Business RV042, RV042G, RV320, and RV325 Denial of Service Vulnerabilities
CVE-2024-20521 6.5 MEDIUM Cisco Small Business RV042, RV042G, RV320, and RV325 Remote Command Execution Vulnerabilit
CVE-2024-20520 6.5 MEDIUM Cisco Small Business RV042, RV042G, RV320, and RV325 Remote Command Execution Vulnerabilit
CVE-2024-20518 6.5 MEDIUM Cisco Small Business RV042, RV042G, RV320, and RV325 Remote Command Execution Vulnerabilit
CVE-2024-20491 6.3 MEDIUM Cisco Nexus Dashboard Insights Information Disclosure Vulnerability
CVE-2024-20490 6.3 MEDIUM Cisco Nexus Dashboard Fabric Controller and Nexus Dashboard Orchestrator Information Discl
CVE-2024-20448 6.3 MEDIUM Cisco Nexus Dashboard Fabric Controller Credential Information Disclosure Vulnerability

Showing top 20 of 32 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Cisco Meraki MX Firmware
Same vendor: Cisco
Same weakness: CWE-400

V. Comments for CVE-2024-20502

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