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CVE-2024-20500

Oct. 8, 2024, 6:27 p.m.

CVSS Score

7.5 / 10

Products Impacted

Vendor Product Versions
cisco
  • meraki_z4c_firmware
  • meraki_z4c
  • meraki_z4_firmware
  • meraki_z4
  • meraki_z3c_firmware
  • meraki_z3c
  • meraki_z3_firmware
  • meraki_z3
  • meraki_vmx_firmware
  • meraki_vmx
  • meraki_mx600_firmware
  • meraki_mx600
  • meraki_mx450_firmware
  • meraki_mx450
  • meraki_mx400_firmware
  • meraki_mx400
  • meraki_mx250_firmware
  • meraki_mx250
  • meraki_mx105_firmware
  • meraki_mx105
  • meraki_mx100_firmware
  • meraki_mx100
  • meraki_mx95_firmware
  • meraki_mx95
  • meraki_mx85_firmware
  • meraki_mx85
  • meraki_mx84_firmware
  • meraki_mx84
  • meraki_mx75_firmware
  • meraki_mx75
  • meraki_mx68w_firmware
  • meraki_mx68w
  • meraki_mx68cw_firmware
  • meraki_mx68cw
  • meraki_mx68_firmware
  • meraki_mx68
  • meraki_mx67w_firmware
  • meraki_mx67w
  • meraki_mx67c_firmware
  • meraki_mx67c
  • meraki_mx67_firmware
  • meraki_mx67
  • meraki_mx65w_firmware
  • meraki_mx65w
  • meraki_mx65_firmware
  • meraki_mx65
  • meraki_mx64w_firmware
  • meraki_mx64w
  • meraki_mx64_firmware
  • meraki_mx64
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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 in the AnyConnect service on an affected device. This vulnerability is due to insufficient resource management when establishing TLS/SSL sessions. An attacker could exploit this vulnerability by sending a series of crafted TLS/SSL messages 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.

Weaknesses

CWE-400
Uncontrolled Resource Consumption

The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.

CWE ID: 400

Date

Published: Oct. 2, 2024, 7:15 p.m.

Last Modified: Oct. 8, 2024, 6:27 p.m.

Status : Analyzed

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

ykramarz@cisco.com

CPEs

Type Vendor Product Version Update Edition Language Software Edition Target Software Target Hardware Other Information
o cisco meraki_z4c_firmware / / / / / / / /
h cisco meraki_z4c - / / / / / / /
o cisco meraki_z4_firmware / / / / / / / /
h cisco meraki_z4 - / / / / / / /
o cisco meraki_z3c_firmware / / / / / / / /
h cisco meraki_z3c - / / / / / / /
o cisco meraki_z3_firmware / / / / / / / /
h cisco meraki_z3 - / / / / / / /
o cisco meraki_vmx_firmware / / / / / / / /
h cisco meraki_vmx - / / / / / / /
o cisco meraki_mx600_firmware / / / / / / / /
h cisco meraki_mx600 - / / / / / / /
o cisco meraki_mx450_firmware / / / / / / / /
h cisco meraki_mx450 - / / / / / / /
o cisco meraki_mx400_firmware / / / / / / / /
h cisco meraki_mx400 - / / / / / / /
o cisco meraki_mx250_firmware / / / / / / / /
h cisco meraki_mx250 - / / / / / / /
o cisco meraki_mx105_firmware / / / / / / / /
h cisco meraki_mx105 - / / / / / / /
o cisco meraki_mx100_firmware / / / / / / / /
h cisco meraki_mx100 - / / / / / / /
o cisco meraki_mx95_firmware / / / / / / / /
h cisco meraki_mx95 - / / / / / / /
o cisco meraki_mx85_firmware / / / / / / / /
h cisco meraki_mx85 - / / / / / / /
o cisco meraki_mx84_firmware / / / / / / / /
h cisco meraki_mx84 - / / / / / / /
o cisco meraki_mx75_firmware / / / / / / / /
h cisco meraki_mx75 - / / / / / / /
o cisco meraki_mx68w_firmware / / / / / / / /
h cisco meraki_mx68w - / / / / / / /
o cisco meraki_mx68cw_firmware / / / / / / / /
h cisco meraki_mx68cw - / / / / / / /
o cisco meraki_mx68_firmware / / / / / / / /
h cisco meraki_mx68 - / / / / / / /
o cisco meraki_mx67w_firmware / / / / / / / /
h cisco meraki_mx67w - / / / / / / /
o cisco meraki_mx67c_firmware / / / / / / / /
h cisco meraki_mx67c - / / / / / / /
o cisco meraki_mx67_firmware / / / / / / / /
h cisco meraki_mx67 - / / / / / / /
o cisco meraki_mx65w_firmware / / / / / / / /
h cisco meraki_mx65w - / / / / / / /
o cisco meraki_mx65_firmware / / / / / / / /
h cisco meraki_mx65 - / / / / / / /
o cisco meraki_mx64w_firmware / / / / / / / /
h cisco meraki_mx64w - / / / / / / /
o cisco meraki_mx64_firmware / / / / / / / /
h cisco meraki_mx64 - / / / / / / /

CVSS Data

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

Base Score
7.5
Exploitability Score
3.9
Impact Score
3.6
Base Severity
HIGH
CVSS Vector String

The CVSS vector string provides an in-depth view of the vulnerability metrics.

View Vector String

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References