CVE-2023-20270

Severity Score

5.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

Una vulnerabilidad en la interacción entre el preprocesador del protocolo Server Message Block (SMB) y el motor de detección Snort 3 para el software Cisco Firepower Threat Defense (FTD) podría permitir que un atacante remoto no autenticado omita las políticas configuradas o provoque una Denegación de Servicio (DoS) condición en un dispositivo afectado. Esta vulnerabilidad se debe a una verificación de errores incorrecta cuando el motor de detección de Snort 3 procesa el tráfico SMB. Un atacante podría aprovechar esta vulnerabilidad enviando un flujo de paquetes SMB manipulado a través de un dispositivo afectado. Un exploit exitoso podría permitir al atacante hacer que el proceso Snort se recargue, lo que resultaría en una condición DoS.

*Credits: N/A

CVSS Scores

NISTv3.1 5.8

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

None

Availability

Low

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2022-10-27 CVE Reserved
2023-11-01 CVE Published
2024-08-02 CVE Updated
2024-11-07 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-smbsnort3-dos-pfOjOYUV	2024-01-25

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Cisco Search vendor "Cisco"		Firepower Threat Defense Search vendor "Cisco" for product "Firepower Threat Defense"				7.1.0 Search vendor "Cisco" for product "Firepower Threat Defense" and version "7.1.0"		-		Affected
Cisco Search vendor "Cisco"		Firepower Threat Defense Search vendor "Cisco" for product "Firepower Threat Defense"				7.1.0.1 Search vendor "Cisco" for product "Firepower Threat Defense" and version "7.1.0.1"		-		Affected
Cisco Search vendor "Cisco"		Firepower Threat Defense Search vendor "Cisco" for product "Firepower Threat Defense"				7.1.0.2 Search vendor "Cisco" for product "Firepower Threat Defense" and version "7.1.0.2"		-		Affected
Cisco Search vendor "Cisco"		Firepower Threat Defense Search vendor "Cisco" for product "Firepower Threat Defense"				7.1.0.3 Search vendor "Cisco" for product "Firepower Threat Defense" and version "7.1.0.3"		-		Affected
Cisco Search vendor "Cisco"		Firepower Threat Defense Search vendor "Cisco" for product "Firepower Threat Defense"				7.2.0 Search vendor "Cisco" for product "Firepower Threat Defense" and version "7.2.0"		-		Affected
Cisco Search vendor "Cisco"		Firepower Threat Defense Search vendor "Cisco" for product "Firepower Threat Defense"				7.2.0.1 Search vendor "Cisco" for product "Firepower Threat Defense" and version "7.2.0.1"		-		Affected
Cisco Search vendor "Cisco"		Firepower Threat Defense Search vendor "Cisco" for product "Firepower Threat Defense"				7.2.1 Search vendor "Cisco" for product "Firepower Threat Defense" and version "7.2.1"		-		Affected
Cisco Search vendor "Cisco"		Firepower Threat Defense Search vendor "Cisco" for product "Firepower Threat Defense"				7.2.2 Search vendor "Cisco" for product "Firepower Threat Defense" and version "7.2.2"		-		Affected
Cisco Search vendor "Cisco"		Firepower Threat Defense Search vendor "Cisco" for product "Firepower Threat Defense"				7.2.3 Search vendor "Cisco" for product "Firepower Threat Defense" and version "7.2.3"		-		Affected
Cisco Search vendor "Cisco"		Firepower Threat Defense Search vendor "Cisco" for product "Firepower Threat Defense"				7.3.0 Search vendor "Cisco" for product "Firepower Threat Defense" and version "7.3.0"		-		Affected
Cisco Search vendor "Cisco"		Firepower Threat Defense Search vendor "Cisco" for product "Firepower Threat Defense"				7.3.1 Search vendor "Cisco" for product "Firepower Threat Defense" and version "7.3.1"		-		Affected
Cisco Search vendor "Cisco"		Firepower Threat Defense Search vendor "Cisco" for product "Firepower Threat Defense"				7.3.1.1 Search vendor "Cisco" for product "Firepower Threat Defense" and version "7.3.1.1"		-		Affected