CVE-2022-20933
Cisco Meraki AnyConnect SSL VPN Server Denial of Service Vulnerability
Description
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.
INFO
Published Date :
Oct. 26, 2022, 3:15 p.m.
Last Modified :
Nov. 7, 2023, 3:43 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
4.0
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2022-20933 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
Affected Products
The following products are affected by CVE-2022-20933
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2022-20933.
| URL | Resource |
|---|---|
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-meraki-mx-vpn-dos-vnESbgBf | Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
test 反向辣鸡数据投放 CVE-2022-23305 工具 利用 教程 Exploit POC
cve-2020-
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2022-20933 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-20933 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Removed CVSS V3 Cisco Systems, Inc. AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H Added CVSS V3.1 Cisco Systems, Inc. AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H -
Initial Analysis by [email protected]
Oct. 31, 2022
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H Changed Reference Type https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-meraki-mx-vpn-dos-vnESbgBf No Types Assigned https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-meraki-mx-vpn-dos-vnESbgBf Vendor Advisory Added CWE NIST NVD-CWE-Other Added CPE Configuration AND OR *cpe:2.3:o:cisco:meraki_mx64_firmware:*:*:*:*:*:*:*:* versions from (including) 16.2.0 up to (excluding) 16.16.6 *cpe:2.3:o:cisco:meraki_mx64_firmware:*:*:*:*:*:*:*:* versions from (including) 17.0.0 up to (excluding) 17.10.1 OR cpe:2.3:h:cisco:meraki_mx64:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:cisco:meraki_mx64w_firmware:*:*:*:*:*:*:*:* versions from (including) 16.2.0 up to (excluding) 16.16.6 *cpe:2.3:o:cisco:meraki_mx64w_firmware:*:*:*:*:*:*:*:* versions from (including) 17.0.0 up to (excluding) 17.10.1 OR cpe:2.3:h:cisco:meraki_mx64w:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:cisco:meraki_mx65_firmware:*:*:*:*:*:*:*:* versions from (including) 16.2.0 up to (excluding) 16.16.6 *cpe:2.3:o:cisco:meraki_mx65_firmware:*:*:*:*:*:*:*:* versions from (including) 17.0.0 up to (excluding) 17.10.1 OR cpe:2.3:h:cisco:meraki_mx65:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:cisco:meraki_mx65w_firmware:*:*:*:*:*:*:*:* versions from (including) 16.2.0 up to (excluding) 16.16.6 *cpe:2.3:o:cisco:meraki_mx65w_firmware:*:*:*:*:*:*:*:* versions from (including) 17.0.0 up to (excluding) 17.10.1 OR cpe:2.3:h:cisco:meraki_mx65w:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:cisco:meraki_mx67_firmware:*:*:*:*:*:*:*:* versions from (including) 16.2.0 up to (excluding) 16.16.6 *cpe:2.3:o:cisco:meraki_mx67_firmware:*:*:*:*:*:*:*:* versions from (including) 17.0.0 up to (excluding) 17.10.1 OR cpe:2.3:h:cisco:meraki_mx67:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:cisco:meraki_mx67cw_firmware:*:*:*:*:*:*:*:* versions from (including) 16.2.0 up to (excluding) 16.16.6 *cpe:2.3:o:cisco:meraki_mx67cw_firmware:*:*:*:*:*:*:*:* versions from (including) 17.0.0 up to (excluding) 17.10.1 OR cpe:2.3:h:cisco:meraki_mx67cw:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:cisco:meraki_mx67w_firmware:*:*:*:*:*:*:*:* versions from (including) 16.2.0 up to (excluding) 16.16.6 *cpe:2.3:o:cisco:meraki_mx67w_firmware:*:*:*:*:*:*:*:* versions from (including) 17.0.0 up to (excluding) 17.10.1 OR cpe:2.3:h:cisco:meraki_mx67w:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:cisco:meraki_mx68_firmware:*:*:*:*:*:*:*:* versions from (including) 16.2.0 up to (excluding) 16.16.6 *cpe:2.3:o:cisco:meraki_mx68_firmware:*:*:*:*:*:*:*:* versions from (including) 17.0.0 up to (excluding) 17.10.1 OR cpe:2.3:h:cisco:meraki_mx68:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:cisco:meraki_mx68cw_firmware:*:*:*:*:*:*:*:* versions from (including) 16.2.0 up to (excluding) 16.16.6 *cpe:2.3:o:cisco:meraki_mx68cw_firmware:*:*:*:*:*:*:*:* versions from (including) 17.0.0 up to (excluding) 17.10.1 OR cpe:2.3:h:cisco:meraki_mx68cw:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:cisco:meraki_mx68w_firmware:*:*:*:*:*:*:*:* versions from (including) 16.2.0 up to (excluding) 16.16.6 *cpe:2.3:o:cisco:meraki_mx68w_firmware:*:*:*:*:*:*:*:* versions from (including) 17.0.0 up to (excluding) 17.10.1 OR cpe:2.3:h:cisco:meraki_mx68w:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:cisco:meraki_mx75_firmware:*:*:*:*:*:*:*:* versions from (including) 16.2.0 up to (excluding) 16.16.6 *cpe:2.3:o:cisco:meraki_mx75_firmware:*:*:*:*:*:*:*:* versions from (including) 17.0.0 up to (excluding) 17.10.1 OR cpe:2.3:h:cisco:meraki_mx75:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:cisco:meraki_mx84_firmware:*:*:*:*:*:*:*:* versions from (including) 16.2.0 up to (excluding) 16.16.6 *cpe:2.3:o:cisco:meraki_mx84_firmware:*:*:*:*:*:*:*:* versions from (including) 17.0.0 up to (excluding) 17.10.1 OR cpe:2.3:h:cisco:meraki_mx84:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:cisco:meraki_mx85_firmware:*:*:*:*:*:*:*:* versions from (including) 16.2.0 up to (excluding) 16.16.6 *cpe:2.3:o:cisco:meraki_mx85_firmware:*:*:*:*:*:*:*:* versions from (including) 17.0.0 up to (excluding) 17.10.1 OR cpe:2.3:h:cisco:meraki_mx85:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:cisco:meraki_mx95_firmware:*:*:*:*:*:*:*:* versions from (including) 16.2.0 up to (excluding) 16.16.6 *cpe:2.3:o:cisco:meraki_mx95_firmware:*:*:*:*:*:*:*:* versions from (including) 17.0.0 up to (excluding) 17.10.1 OR cpe:2.3:h:cisco:meraki_mx95:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:cisco:meraki_mx100_firmware:*:*:*:*:*:*:*:* versions from (including) 16.2.0 up to (excluding) 16.16.6 *cpe:2.3:o:cisco:meraki_mx100_firmware:*:*:*:*:*:*:*:* versions from (including) 17.0.0 up to (excluding) 17.10.1 OR cpe:2.3:h:cisco:meraki_mx100:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:cisco:meraki_mx105_firmware:*:*:*:*:*:*:*:* versions from (including) 16.2.0 up to (excluding) 16.16.6 *cpe:2.3:o:cisco:meraki_mx105_firmware:*:*:*:*:*:*:*:* versions from (including) 17.0.0 up to (excluding) 17.10.1 OR cpe:2.3:h:cisco:meraki_mx105:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:cisco:meraki_mx250_firmware:*:*:*:*:*:*:*:* versions from (including) 16.2.0 up to (excluding) 16.16.6 *cpe:2.3:o:cisco:meraki_mx250_firmware:*:*:*:*:*:*:*:* versions from (including) 17.0.0 up to (excluding) 17.10.1 OR cpe:2.3:h:cisco:meraki_mx250:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:cisco:meraki_mx400_firmware:*:*:*:*:*:*:*:* versions from (including) 16.2.0 up to (excluding) 16.16.6 *cpe:2.3:o:cisco:meraki_mx400_firmware:*:*:*:*:*:*:*:* versions from (including) 17.0.0 up to (excluding) 17.10.1 OR cpe:2.3:h:cisco:meraki_mx400:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:cisco:meraki_mx450_firmware:*:*:*:*:*:*:*:* versions from (including) 16.2.0 up to (excluding) 16.16.6 *cpe:2.3:o:cisco:meraki_mx450_firmware:*:*:*:*:*:*:*:* versions from (including) 17.0.0 up to (excluding) 17.10.1 OR cpe:2.3:h:cisco:meraki_mx450:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:cisco:meraki_mx600_firmware:*:*:*:*:*:*:*:* versions from (including) 16.2.0 up to (excluding) 16.16.6 *cpe:2.3:o:cisco:meraki_mx600_firmware:*:*:*:*:*:*:*:* versions from (including) 17.0.0 up to (excluding) 17.10.1 OR cpe:2.3:h:cisco:meraki_mx600:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:cisco:meraki_vmx_firmware:*:*:*:*:*:*:*:* versions from (including) 16.2.0 up to (excluding) 16.16.6 *cpe:2.3:o:cisco:meraki_vmx_firmware:*:*:*:*:*:*:*:* versions from (including) 17.0.0 up to (excluding) 17.10.1 OR cpe:2.3:h:cisco:meraki_vmx:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:cisco:meraki_z3c_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:cisco:meraki_z3c:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:cisco:meraki_z3_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:cisco:meraki_z3:-:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-20933 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2022-20933
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.14 }} 0.01%
score
0.49097
percentile