CVE-2022-20943
"Cisco Snort SMB2 Processing vulnerabilities allow remote DoS and Policy Bypass"
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 :
Jan. 25, 2024, 5:15 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
1.4
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2022-20943 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-2022-20943
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-2022-20943.
| URL | Resource |
|---|---|
| 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-
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2022-20943 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-20943 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]
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. 23, 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: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:7.0.0:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.0.0.1:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.0.1:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.0.1.1:*:*:*:*:*:*:* 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:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:cisco:meraki_mx_security_appliance_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 16.6.7 *cpe:2.3:o:cisco:meraki_mx_security_appliance_firmware:*:*:*:*:*:*:*:* versions from (including) 17.0 up to (excluding) 17.11.1 *cpe:2.3:o:cisco:meraki_mx_security_appliance_firmware:*:*:*:*:*:*:*:* versions from (including) 18.0 up to (excluding) 18.1.3
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-20943 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-2022-20943
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