CVE-2023-20070

Severity Score

4.0

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A vulnerability in the TLS 1.3 implementation of the Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the Snort 3 detection engine to unexpectedly restart. This vulnerability is due to a logic error in how memory allocations are handled during a TLS 1.3 session. Under specific, time-based constraints, an attacker could exploit this vulnerability by sending a crafted TLS 1.3 message sequence through an affected device. A successful exploit could allow the attacker to cause the Snort 3 detection engine to reload, resulting in a denial of service (DoS) condition. While the Snort detection engine reloads, packets going through the FTD device that are sent to the Snort detection engine will be dropped. The Snort detection engine will restart automatically. No manual intervention is required.

Una vulnerabilidad en la implementación de TLS 1.3 del software Cisco Firepower Threat Defense (FTD) podría permitir que un atacante remoto no autenticado provoque que el motor de detección Snort 3 se reinicie inesperadamente. Esta vulnerabilidad se debe a un error lógico en cómo se manejan las asignaciones de memoria durante una sesión TLS 1.3. Bajo limitaciones de tiempo específicas, un atacante podría aprovechar esta vulnerabilidad enviando una secuencia de mensajes TLS 1.3 manipulada a través de un dispositivo afectado. Un exploit exitoso podría permitir al atacante hacer que el motor de detección de Snort 3 se recargue, lo que resultaría en una condición de Denegación de Servicio (DoS). Mientras el motor de detección de Snort se recarga, los paquetes que pasan por el dispositivo FTD y se envían al motor de detección de Snort se descartarán. El motor de detección de Snort se reiniciará automáticamente. No se requiere intervención manual.

*Credits: N/A

CVSS Scores

NISTv3.1 4.0

Attack Vector

Network

Attack Complexity

High

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
2023-11-15 EPSS Updated
2024-08-02 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-244: Improper Clearing of Heap Memory Before Release ('Heap Inspection')

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-snort3-uAnUntcV	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"				7.2.0 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