CVE-2024-20509

5.8 · MEDIUM

Published Oct 2, 2024 cisco CWE-362 EPSS 0.39% (32th pctl) CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L

Overview

CVE-2024-20509 is a medium-severity vulnerability affecting cisco meraki_mx65_firmware. It was published on October 2, 2024 and has a CVSS 3.1 base score of 5.8 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.8, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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 hijack an AnyConnect VPN session or cause a denial of service (DoS) condition for individual users of the AnyConnect VPN service on an affected device.

This vulnerability is due to weak entropy for handlers that are used during the VPN authentication process as well as a race condition that exists in the same process. An attacker could exploit this vulnerability by correctly guessing an authentication handler and then sending crafted HTTPS requests to an affected device. A successful exploit could allow the attacker to take over the AnyConnect VPN session from a target user or prevent the target user from establishing an AnyConnect VPN session with the affected device.

Remediation

Check the references section for vendor advisories and patches from cisco. Update meraki_mx65_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected Products

Vendor	Product	Versions	Status
cisco	meraki_mx65_firmware	>= 17.6.0, < 18.211.2	Affected
cisco	meraki_mx64_firmware	>= 17.6.0, < 18.211.2	Affected
cisco	meraki_z4c_firmware	>= 16.2, < 18.211.2	Affected
cisco	meraki_z4_firmware	>= 16.2, < 18.211.2	Affected
cisco	meraki_z3c_firmware	>= 16.2, < 18.211.2	Affected
cisco	meraki_z3_firmware	>= 16.2, < 18.211.2	Affected
cisco	meraki_vmx_firmware	>= 16.2, < 18.211.2	Affected
cisco	meraki_mx600_firmware	>= 16.2, < 18.211.2	Affected
cisco	meraki_mx450_firmware	>= 16.2, < 18.211.2	Affected
cisco	meraki_mx400_firmware	>= 16.2, < 18.211.2	Affected

References

Ref sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-meraki-mx-vpn-dos-by-QWUkqV7X

Frequently Asked Questions

What is CVE-2024-20509?

CVE-2024-20509 is a medium-severity vulnerability affecting cisco meraki_mx65_firmware. It was published on October 2, 2024 and has a CVSS 3.1 base score of 5.8 (MEDIUM).

How severe is CVE-2024-20509?

This vulnerability has a CVSS 3.1 base score of 5.8, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2024-20509?

How can CyberStrike help with CVE-2024-20509?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-20509 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.

How CyberStrike Helps

Autonomous Discovery

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Code Review

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HackBrowser

Browser-based exploitation validates findings with real proof-of-concept.

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