6.5
MEDIUM
CVE-2022-20922
Cisco Snort SMB2 Denial of Service and Policy Bypass Vulnerability
Description

Multiple vulnerabilities in the Server Message Block Version 2 (SMB2) processor of the Snort detection engine on multiple Cisco products could allow an unauthenticated, remote attacker to bypass the configured policies or cause a denial of service (DoS) condition on an affected device. These vulnerabilities are due to improper management of system resources when the Snort detection engine is processing SMB2 traffic. An attacker could exploit these vulnerabilities by sending a high rate of certain types of SMB2 packets through an affected device. A successful exploit could allow the attacker to trigger a reload of the Snort process, resulting in a DoS condition. Note: When the snort preserve-connection option is enabled for the Snort detection engine, a successful exploit could also allow the attacker to bypass the configured policies and deliver a malicious payload to the protected network. The snort preserve-connection setting is enabled by default. See the Details ["#details"] section of this advisory for more information. Note: Only products that have Snort 3 configured are affected. Products that are configured with Snort 2 are not affected.

INFO

Published Date :

Nov. 15, 2022, 9:15 p.m.

Last Modified :

Nov. 21, 2024, 6:43 a.m.

Remotely Exploitable :

Yes !

Impact Score :

2.5

Exploitability Score :

3.9
Public PoC/Exploit Available at Github

CVE-2022-20922 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-2022-20922 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.

ID Vendor Product Action
1 Cisco firepower_threat_defense
2 Cisco umbrella_insights_virtual_appliance
3 Cisco cyber_vision
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-2022-20922.

URL Resource
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-smb-3nfhJtr
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-smb-3nfhJtr

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-

Updated: 2 years, 1 month ago
5 stars 2 fork 2 watcher
Born at : Jan. 21, 2022, 5:07 a.m. This repo has been linked 2633 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2022-20922 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2022-20922 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 af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-smb-3nfhJtr
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Jan. 25, 2024

    Action Type Old Value New Value
    Added Reference Cisco Systems, Inc. https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-smb-3nfhJtr [No types assigned]
    Removed Reference Cisco Systems, Inc. https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-smb-3nfhJtr
    Added CWE Cisco Systems, Inc. CWE-244
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Changed Description Multiple vulnerabilities in the Server Message Block Version 2 (SMB2) processor of the Snort detection engine on multiple Cisco products could allow an unauthenticated, remote attacker to bypass the configured policies or cause a denial of service (DoS) condition on an affected device. These vulnerabilities are due to improper management of system resources when the Snort detection engine is processing SMB2 traffic. An attacker could exploit these vulnerabilities by sending a high rate of certain types of SMB2 packets through an affected device. A successful exploit could allow the attacker to trigger a reload of the Snort process, resulting in a DoS condition. Note: When the snort preserve-connection option is enabled for the Snort detection engine, a successful exploit could also allow the attacker to bypass the configured policies and deliver a malicious payload to the protected network. The snort preserve-connection setting is enabled by default. See the Details ["#details"] section of this advisory for more information. Note: Only products that have Snort 3 configured are affected. Products that are configured with Snort 2 are not affected. Multiple vulnerabilities in the Server Message Block Version 2 (SMB2) processor of the Snort detection engine on multiple Cisco products could allow an unauthenticated, remote attacker to bypass the configured policies or cause a denial of service (DoS) condition on an affected device. These vulnerabilities are due to improper management of system resources when the Snort detection engine is processing SMB2 traffic. An attacker could exploit these vulnerabilities by sending a high rate of certain types of SMB2 packets through an affected device. A successful exploit could allow the attacker to trigger a reload of the Snort process, resulting in a DoS condition. Note: When the snort preserve-connection option is enabled for the Snort detection engine, a successful exploit could also allow the attacker to bypass the configured policies and deliver a malicious payload to the protected network. The snort preserve-connection setting is enabled by default. See the Details ["#details"] section of this advisory for more information. Note: Only products that have Snort 3 configured are affected. Products that are configured with Snort 2 are not affected.
  • Initial Analysis by [email protected]

    Nov. 22, 2022

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
    Changed Reference Type https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-smb-3nfhJtr No Types Assigned https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-smb-3nfhJtr Mitigation, Vendor Advisory
    Added CWE NIST NVD-CWE-Other
    Added CPE Configuration OR *cpe:2.3:a:cisco:firepower_threat_defense:7.1.0:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.1.0.1:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.1.0.2:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.2.0:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.2.0.1:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:o:cisco:umbrella_insights_virtual_appliance:1.5.4:*:*:*:*:*:*:* *cpe:2.3:o:cisco:umbrella_insights_virtual_appliance:1.5.5:*:*:*:*:*:*:* *cpe:2.3:o:cisco:umbrella_insights_virtual_appliance:1.5.6:*:*:*:*:*:*:* *cpe:2.3:o:cisco:umbrella_insights_virtual_appliance:2.0.0:*:*:*:*:*:*:* *cpe:2.3:o:cisco:umbrella_insights_virtual_appliance:2.0.2:*:*:*:*:*:*:* *cpe:2.3:o:cisco:umbrella_insights_virtual_appliance:2.0.3:*:*:*:*:*:*:* *cpe:2.3:o:cisco:umbrella_insights_virtual_appliance:2.1.0:*:*:*:*:*:*:* *cpe:2.3:o:cisco:umbrella_insights_virtual_appliance:2.1.2:*:*:*:*:*:*:* *cpe:2.3:o:cisco:umbrella_insights_virtual_appliance:2.1.4:*:*:*:*:*:*:* *cpe:2.3:o:cisco:umbrella_insights_virtual_appliance:2.1.5:*:*:*:*:*:*:* *cpe:2.3:o:cisco:umbrella_insights_virtual_appliance:2.2:*:*:*:*:*:*:* *cpe:2.3:o:cisco:umbrella_insights_virtual_appliance:2.2.1:*:*:*:*:*:*:* *cpe:2.3:o:cisco:umbrella_insights_virtual_appliance:2.3:*:*:*:*:*:*:* *cpe:2.3:o:cisco:umbrella_insights_virtual_appliance:2.3.1:*:*:*:*:*:*:* *cpe:2.3:o:cisco:umbrella_insights_virtual_appliance:2.4:*:*:*:*:*:*:* *cpe:2.3:o:cisco:umbrella_insights_virtual_appliance:2.4.4:*:*:*:*:*:*:* *cpe:2.3:o:cisco:umbrella_insights_virtual_appliance:2.4.6:*:*:*:*:*:*:* *cpe:2.3:o:cisco:umbrella_insights_virtual_appliance:2.4.12:*:*:*:*:*:*:* *cpe:2.3:o:cisco:umbrella_insights_virtual_appliance:2.5:*:*:*:*:*:*:* *cpe:2.3:o:cisco:umbrella_insights_virtual_appliance:2.5.4:*:*:*:*:*:*:* *cpe:2.3:o:cisco:umbrella_insights_virtual_appliance:2.5.5:*:*:*:*:*:*:* *cpe:2.3:o:cisco:umbrella_insights_virtual_appliance:2.5.6:*:*:*:*:*:*:* *cpe:2.3:o:cisco:umbrella_insights_virtual_appliance:2.5.7:*:*:*:*:*:*:* *cpe:2.3:o:cisco:umbrella_insights_virtual_appliance:2.6.0:*:*:*:*:*:*:* *cpe:2.3:o:cisco:umbrella_insights_virtual_appliance:2.6.1:*:*:*:*:*:*:* *cpe:2.3:o:cisco:umbrella_insights_virtual_appliance:2.6.2:*:*:*:*:*:*:* *cpe:2.3:o:cisco:umbrella_insights_virtual_appliance:2.7:*:*:*:*:*:*:* *cpe:2.3:o:cisco:umbrella_insights_virtual_appliance:2.8:*:*:*:*:*:*:* *cpe:2.3:o:cisco:umbrella_insights_virtual_appliance:2.8.9:*:*:*:*:*:*:* *cpe:2.3:o:cisco:umbrella_insights_virtual_appliance:3.0:*:*:*:*:*:*:* *cpe:2.3:o:cisco:umbrella_insights_virtual_appliance:3.1:*:*:*:*:*:*:* *cpe:2.3:o:cisco:umbrella_insights_virtual_appliance:3.2:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:a:cisco:cyber_vision:3.0.0:*:*:*:*:*:*:* *cpe:2.3:a:cisco:cyber_vision:3.0.1:*:*:*:*:*:*:* *cpe:2.3:a:cisco:cyber_vision:3.0.2:*:*:*:*:*:*:* *cpe:2.3:a:cisco:cyber_vision:3.0.3:*:*:*:*:*:*:* *cpe:2.3:a:cisco:cyber_vision:3.0.5:*:*:*:*:*:*:* *cpe:2.3:a:cisco:cyber_vision:3.0.6:*:*:*:*:*:*:* *cpe:2.3:a:cisco:cyber_vision:3.1.0:*:*:*:*:*:*:* *cpe:2.3:a:cisco:cyber_vision:3.1.1:*:*:*:*:*:*:* *cpe:2.3:a:cisco:cyber_vision:3.1.2:*:*:*:*:*:*:* *cpe:2.3:a:cisco:cyber_vision:3.2.0:*:*:*:*:*:*:* *cpe:2.3:a:cisco:cyber_vision:3.2.1:*:*:*:*:*:*:* *cpe:2.3:a:cisco:cyber_vision:3.2.2:*:*:*:*:*:*:* *cpe:2.3:a:cisco:cyber_vision:3.2.3:*:*:*:*:*:*:* *cpe:2.3:a:cisco:cyber_vision:3.2.4:*:*:*:*:*:*:* *cpe:2.3:a:cisco:cyber_vision:4.0.0:*:*:*:*:*:*:* *cpe:2.3:a:cisco:cyber_vision:4.0.1:*:*:*:*:*:*:* *cpe:2.3:a:cisco:cyber_vision:4.0.2:*:*:*:*:*:*:* *cpe:2.3:a:cisco:cyber_vision:4.0.3:*:*:*:*:*:*:* *cpe:2.3:a:cisco:cyber_vision:4.1.0:*:*:*:*:*:*:* *cpe:2.3:a:cisco:cyber_vision:4.1.1:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2022-20922 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-2022-20922 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.13 }} 0.01%

score

0.47772

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability