Vulnerability Monitor

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CVE-2022-20933

A vulnerability in the Cisco AnyConnect VPN server of Cisco Meraki MX and Cisco Meraki Z3 Teleworker Gateway devices could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient validation of client-supplied parameters while establishing an SSL VPN session. An attacker could exploit this vulnerability by crafting a malicious request and sending it to the affected device. A successful exploit could allow the attacker to cause the Cisco AnyConnect VPN server to crash and restart, resulting in the failure of the established SSL VPN connections and forcing remote users to initiate a new VPN connection and re-authenticate. A sustained attack could prevent new SSL VPN connections from being established. Note: When the attack traffic stops, the Cisco AnyConnect VPN server recovers gracefully without requiring manual intervention. Cisco Meraki has released software updates that address this vulnerability.

Published

2022-10-26T15:15:14.713

Last Modified

2024-11-21T06:43:51.123

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 8.6 (HIGH)

Weaknesses
  • Type: Secondary
    CWE-234
  • Type: Primary
    NVD-CWE-Other
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System cisco meraki_mx64_firmware < 16.16.6 Yes
Operating System cisco meraki_mx64_firmware < 17.10.1 Yes
Hardware cisco meraki_mx64 - No
Operating System cisco meraki_mx64w_firmware < 16.16.6 Yes
Operating System cisco meraki_mx64w_firmware < 17.10.1 Yes
Hardware cisco meraki_mx64w - No
Operating System cisco meraki_mx65_firmware < 16.16.6 Yes
Operating System cisco meraki_mx65_firmware < 17.10.1 Yes
Hardware cisco meraki_mx65 - No
Operating System cisco meraki_mx65w_firmware < 16.16.6 Yes
Operating System cisco meraki_mx65w_firmware < 17.10.1 Yes
Hardware cisco meraki_mx65w - No
Operating System cisco meraki_mx67_firmware < 16.16.6 Yes
Operating System cisco meraki_mx67_firmware < 17.10.1 Yes
Hardware cisco meraki_mx67 - No
Operating System cisco meraki_mx67cw_firmware < 16.16.6 Yes
Operating System cisco meraki_mx67cw_firmware < 17.10.1 Yes
Hardware cisco meraki_mx67cw - No
Operating System cisco meraki_mx67w_firmware < 16.16.6 Yes
Operating System cisco meraki_mx67w_firmware < 17.10.1 Yes
Hardware cisco meraki_mx67w - No
Operating System cisco meraki_mx68_firmware < 16.16.6 Yes
Operating System cisco meraki_mx68_firmware < 17.10.1 Yes
Hardware cisco meraki_mx68 - No
Operating System cisco meraki_mx68cw_firmware < 16.16.6 Yes
Operating System cisco meraki_mx68cw_firmware < 17.10.1 Yes
Hardware cisco meraki_mx68cw - No
Operating System cisco meraki_mx68w_firmware < 16.16.6 Yes
Operating System cisco meraki_mx68w_firmware < 17.10.1 Yes
Hardware cisco meraki_mx68w - No
Operating System cisco meraki_mx75_firmware < 16.16.6 Yes
Operating System cisco meraki_mx75_firmware < 17.10.1 Yes
Hardware cisco meraki_mx75 - No
Operating System cisco meraki_mx84_firmware < 16.16.6 Yes
Operating System cisco meraki_mx84_firmware < 17.10.1 Yes
Hardware cisco meraki_mx84 - No
Operating System cisco meraki_mx85_firmware < 16.16.6 Yes
Operating System cisco meraki_mx85_firmware < 17.10.1 Yes
Hardware cisco meraki_mx85 - No
Operating System cisco meraki_mx95_firmware < 16.16.6 Yes
Operating System cisco meraki_mx95_firmware < 17.10.1 Yes
Hardware cisco meraki_mx95 - No
Operating System cisco meraki_mx100_firmware < 16.16.6 Yes
Operating System cisco meraki_mx100_firmware < 17.10.1 Yes
Hardware cisco meraki_mx100 - No
Operating System cisco meraki_mx105_firmware < 16.16.6 Yes
Operating System cisco meraki_mx105_firmware < 17.10.1 Yes
Hardware cisco meraki_mx105 - No
Operating System cisco meraki_mx250_firmware < 16.16.6 Yes
Operating System cisco meraki_mx250_firmware < 17.10.1 Yes
Hardware cisco meraki_mx250 - No
Operating System cisco meraki_mx400_firmware < 16.16.6 Yes
Operating System cisco meraki_mx400_firmware < 17.10.1 Yes
Hardware cisco meraki_mx400 - No
Operating System cisco meraki_mx450_firmware < 16.16.6 Yes
Operating System cisco meraki_mx450_firmware < 17.10.1 Yes
Hardware cisco meraki_mx450 - No
Operating System cisco meraki_mx600_firmware < 16.16.6 Yes
Operating System cisco meraki_mx600_firmware < 17.10.1 Yes
Hardware cisco meraki_mx600 - No
Operating System cisco meraki_vmx_firmware < 16.16.6 Yes
Operating System cisco meraki_vmx_firmware < 17.10.1 Yes
Hardware cisco meraki_vmx - No
Operating System cisco meraki_z3c_firmware - Yes
Hardware cisco meraki_z3c - No
Operating System cisco meraki_z3_firmware - Yes
Hardware cisco meraki_z3 - No
References