CVE-2024-20509
Cisco Meraki MX and Z3 Teleworker Gateway AnyConnect VPN Session Takeover and Denial of Service Vulnerability
Severity Score
5.8
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
Track
*SSVC
Descriptions
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.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:Track
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2023-11-08 CVE Reserved
- 2024-10-02 CVE Published
- 2024-10-02 CVE Updated
- 2024-10-09 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CAPEC
References (1)
| URL | Tag | Source |
|---|---|---|
| https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-meraki-mx-vpn-dos-by-QWUkqV7X |
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Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Cisco Search vendor "Cisco" | Cisco Search vendor "Cisco" for product "Cisco" | * | - |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Meraki Mx100 Firmware Search vendor "Cisco" for product "Meraki Mx100 Firmware" | * | - |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Meraki Mx105 Firmware Search vendor "Cisco" for product "Meraki Mx105 Firmware" | * | - |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Meraki Mx250 Firmware Search vendor "Cisco" for product "Meraki Mx250 Firmware" | * | - |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Meraki Mx400 Firmware Search vendor "Cisco" for product "Meraki Mx400 Firmware" | * | - |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Meraki Mx450 Firmware Search vendor "Cisco" for product "Meraki Mx450 Firmware" | * | - |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Meraki Mx600 Firmware Search vendor "Cisco" for product "Meraki Mx600 Firmware" | * | - |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Meraki Mx64 Firmware Search vendor "Cisco" for product "Meraki Mx64 Firmware" | * | - |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Meraki Mx64w Firmware Search vendor "Cisco" for product "Meraki Mx64w Firmware" | * | - |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Meraki Mx65 Firmware Search vendor "Cisco" for product "Meraki Mx65 Firmware" | * | - |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Meraki Mx65w Firmware Search vendor "Cisco" for product "Meraki Mx65w Firmware" | * | - |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Meraki Mx67 Firmware Search vendor "Cisco" for product "Meraki Mx67 Firmware" | * | - |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Meraki Mx67c Firmware Search vendor "Cisco" for product "Meraki Mx67c Firmware" | * | - |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Meraki Mx67w Firmware Search vendor "Cisco" for product "Meraki Mx67w Firmware" | * | - |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Meraki Mx68 Firmware Search vendor "Cisco" for product "Meraki Mx68 Firmware" | * | - |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Meraki Mx68cw Firmware Search vendor "Cisco" for product "Meraki Mx68cw Firmware" | * | - |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Meraki Mx68w Firmware Search vendor "Cisco" for product "Meraki Mx68w Firmware" | * | - |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Meraki Mx75 Firmware Search vendor "Cisco" for product "Meraki Mx75 Firmware" | * | - |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Meraki Mx84 Firmware Search vendor "Cisco" for product "Meraki Mx84 Firmware" | * | - |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Meraki Mx85 Firmware Search vendor "Cisco" for product "Meraki Mx85 Firmware" | * | - |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Meraki Mx95 Firmware Search vendor "Cisco" for product "Meraki Mx95 Firmware" | * | - |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Meraki Vmx Firmware Search vendor "Cisco" for product "Meraki Vmx Firmware" | * | - |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Meraki Z3 Firmware Search vendor "Cisco" for product "Meraki Z3 Firmware" | * | - |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Meraki Z3c Firmware Search vendor "Cisco" for product "Meraki Z3c Firmware" | * | - |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Meraki Z4 Firmware Search vendor "Cisco" for product "Meraki Z4 Firmware" | * | - |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Meraki Z4c Firmware Search vendor "Cisco" for product "Meraki Z4c Firmware" | * | - |
Affected
| ||||||