CVE-2022-20943

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.

CVSS v3 5.8 MEDIUM

5.8^/10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope CHANGED

References

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

Configurations

Configuration 1 (hide)

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:::::::*

Configuration 2 (hide)

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:::::::*

Configuration 3 (hide)

OR	cpe:2.3:o:cisco:meraki_mx_security_appliance_firmware::::::::
	cpe:2.3:o:cisco:meraki_mx_security_appliance_firmware::::::::
	cpe:2.3:o:cisco:meraki_mx_security_appliance_firmware::::::::

History

25 Jan 2024, 17:15

Type	Values Removed	Values Added
References	{'url': 'https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-smb-3nfhJtr', 'name': 'https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-smb-3nfhJtr', 'tags': ['Mitigation', 'Vendor Advisory'], 'refsource': 'MISC'}	() https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-smb-3nfhJtr -

07 Nov 2023, 03:43

Type	Values Removed	Values Added
Summary	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.

Information

Published : 2022-11-15 21:15

Updated : 2024-02-28 19:29

NVD link : CVE-2022-20943

Mitre link : CVE-2022-20943

CVE.ORG link : CVE-2022-20943

JSON object : View

Products Affected

cisco

cyber_vision
meraki_mx_security_appliance_firmware
firepower_threat_defense

CWE

NVD-CWE-Other CWE-244

Improper Clearing of Heap Memory Before Release ('Heap Inspection')

5.8 /10