CVE-2023-20270

A vulnerability in the interaction between the Server Message Block (SMB) protocol preprocessor and the Snort 3 detection engine for Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass the configured policies or cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper error-checking when the Snort 3 detection engine is processing SMB traffic. An attacker could exploit this vulnerability by sending a crafted SMB packet stream through an affected device. A successful exploit could allow the attacker to cause the Snort process to reload, resulting in a DoS condition.

CVSS v3 5.8 MEDIUM

5.8^/10

CVSS v3 : MEDIUM

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-ftd-smbsnort3-dos-pfOjOYUV	Vendor Advisory

Configurations

Configuration 1 (hide)

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:7.1.0.3:::::::*
	cpe:2.3:a:cisco:firepower_threat_defense:7.2.0:::::::*
	cpe:2.3:a:cisco:firepower_threat_defense:7.2.0.1:::::::*
	cpe:2.3:a:cisco:firepower_threat_defense:7.2.1:::::::*
	cpe:2.3:a:cisco:firepower_threat_defense:7.2.2:::::::*
	cpe:2.3:a:cisco:firepower_threat_defense:7.2.3:::::::*
	cpe:2.3:a:cisco:firepower_threat_defense:7.3.0:::::::*
	cpe:2.3:a:cisco:firepower_threat_defense:7.3.1:::::::*
	cpe:2.3:a:cisco:firepower_threat_defense:7.3.1.1:::::::*

History

25 Jan 2024, 17:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2023-11-01 17:15

Updated : 2024-02-05 00:01

NVD link : CVE-2023-20270

Mitre link : CVE-2023-20270

CVE.ORG link : CVE-2023-20270

JSON object : View

Products Affected

cisco

firepower_threat_defense

CWE

NVD-CWE-noinfo CWE-20

Improper Input Validation

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This vulnerability is due to improper error-checking when the Snort 3 detection engine is processing SMB traffic. An attacker could exploit this vulnerability by sending a crafted SMB packet stream through an affected device. A successful exploit could allow the attacker to cause the Snort process to reload, resulting in a DoS condition."}, {"lang": "es", "value": "Una vulnerabilidad en la interacci\u00f3n entre el preprocesador del protocolo Server Message Block (SMB) y el motor de detecci\u00f3n Snort 3 para el software Cisco Firepower Threat Defense (FTD) podr\u00eda permitir que un atacante remoto no autenticado omita las pol\u00edticas configuradas o provoque una Denegaci\u00f3n de Servicio (DoS) condici\u00f3n en un dispositivo afectado. Esta vulnerabilidad se debe a una verificaci\u00f3n de errores incorrecta cuando el motor de detecci\u00f3n de Snort 3 procesa el tr\u00e1fico SMB. Un atacante podr\u00eda aprovechar esta vulnerabilidad enviando un flujo de paquetes SMB manipulado a trav\u00e9s de un dispositivo afectado. Un exploit exitoso podr\u00eda permitir al atacante hacer que el proceso Snort se recargue, lo que resultar\u00eda en una condici\u00f3n DoS."}], "lastModified": "2024-01-25T17:15:43.070", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:cisco:firepower_threat_defense:7.1.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D619BF54-1BA9-45D0-A876-92D7010088A0"}, {"criteria": "cpe:2.3:a:cisco:firepower_threat_defense:7.1.0.1:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "469EA365-DED5-4436-AAC2-5553529DE700"}, {"criteria": "cpe:2.3:a:cisco:firepower_threat_defense:7.1.0.2:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4D94F400-5A35-41F5-B37F-E9DA6F87ED8E"}, {"criteria": "cpe:2.3:a:cisco:firepower_threat_defense:7.1.0.3:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5364CB94-BEA3-4E9A-A2F9-EE96A2D7F8AB"}, {"criteria": "cpe:2.3:a:cisco:firepower_threat_defense:7.2.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "16FD5D12-CF1A-4990-99B3-1840EFBA5611"}, {"criteria": "cpe:2.3:a:cisco:firepower_threat_defense:7.2.0.1:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FCD2D11D-FF08-44E4-BF67-D8DD1E701FCD"}, {"criteria": "cpe:2.3:a:cisco:firepower_threat_defense:7.2.1:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F788D156-1F1F-4A08-848B-257BC4CCE000"}, {"criteria": "cpe:2.3:a:cisco:firepower_threat_defense:7.2.2:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "795ED164-7800-4D50-8E37-665BE30190D9"}, {"criteria": "cpe:2.3:a:cisco:firepower_threat_defense:7.2.3:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1B0664B8-1670-4F47-A01E-089D05A9618A"}, {"criteria": "cpe:2.3:a:cisco:firepower_threat_defense:7.3.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EBC0C3DC-4761-488A-90A9-6EA45EE61526"}, {"criteria": "cpe:2.3:a:cisco:firepower_threat_defense:7.3.1:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "62EE065B-F8B6-4125-8486-B2EE0566B27A"}, {"criteria": "cpe:2.3:a:cisco:firepower_threat_defense:7.3.1.1:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5245DEF8-64BE-47C9-AA3C-DF3F7F92A89F"}], "operator": "OR"}]}], "sourceIdentifier": "ykramarz@cisco.com"}