> CVE-2024-20330 [HIGH]

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PUBLISHED
2024-10-23 17:15
MODIFIED
2025-08-06 15:17
CVSS_SCORE V3
8.6
EPSS (Prob. Exploit)
0.66%
Top 48.9%
DATA SOURCES:
NVD 🔗 2025-10-18 CVE PROJECT 🔗 2026-01-19 FIRST EPSS 🔗 2026-10-25

> DESCRIPTION

A vulnerability in the Snort 2 and Snort 3 TCP and UDP detection engine of Cisco Firepower Threat Defense (FTD) Software for Cisco Firepower 2100 Series Appliances could allow an unauthenticated, remote attacker to cause memory corruption, which could cause the Snort detection engine to restart unexpectedly. This vulnerability is due to improper memory management when the Snort detection engine processes specific TCP or UDP packets. An attacker could exploit this vulnerability by sending crafted TCP or UDP packets through a device that is inspecting traffic using the Snort detection engine. A successful exploit could allow the attacker to restart the Snort detection engine repeatedly, which could cause a denial of service (DoS) condition. The DoS condition impacts only the traffic through the device that is examined by the Snort detection engine. The device can still be managed over the network. Note: Once a memory block is corrupted, it cannot be cleared until the Cisco Firepower 2100 Series Appliance is manually reloaded. This means that the Snort detection engine could crash repeatedly, causing traffic that is processed by the Snort detection engine to be dropped until the device is manually reloaded.

> AFFECTED_PRODUCTS

Cisco - Firepower Threat Defense
Version: 7.0.0.0
Cisco - Firepower Threat Defense
Version: 7.0.0.1
Cisco - Firepower Threat Defense
Version: 7.0.1
Cisco - Firepower Threat Defense
Version: 7.0.1.1
Cisco - Firepower Threat Defense
Version: 7.0.2
Cisco - Firepower Threat Defense
Version: 7.0.2.1
Cisco - Firepower Threat Defense
Version: 7.0.3
Cisco - Firepower Threat Defense
Version: 7.0.4
Cisco - Firepower Threat Defense
Version: 7.0.5
Cisco - Firepower Threat Defense
Version: 7.0.6
Cisco - Firepower Threat Defense
Version: 7.0.6.1
Cisco - Firepower Threat Defense
Version: 7.0.6.2
Cisco - Firepower Threat Defense
Version: 7.0.6.3
Cisco - Firepower Threat Defense
Version: 7.1.0
Cisco - Firepower Threat Defense
Version: 7.1.0.1
Cisco - Firepower Threat Defense
Version: 7.1.0.3
Cisco - Firepower Threat Defense
Version: 7.2.0
Cisco - Firepower Threat Defense
Version: 7.2.0.1
Cisco - Firepower Threat Defense
Version: 7.2.1
Cisco - Firepower Threat Defense
Version: 7.2.2
Cisco - Firepower Threat Defense
Version: 7.2.3
Cisco - Firepower Threat Defense
Version: 7.2.4
Cisco - Firepower Threat Defense
Version: 7.2.4.1
Cisco - Firepower Threat Defense
Version: 7.2.5
Cisco - Firepower Threat Defense
Version: 7.2.5.1
Cisco - Firepower Threat Defense
Version: 7.2.5.2
Cisco - Firepower Threat Defense
Version: 7.2.6
Cisco - Firepower Threat Defense
Version: 7.2.7
Cisco - Firepower Threat Defense
Version: 7.2.8
Cisco - Firepower Threat Defense
Version: 7.2.8.1
Cisco - Firepower Threat Defense
Version: 7.3.0
Cisco - Firepower Threat Defense
Version: 7.3.1
Cisco - Firepower Threat Defense
Version: 7.3.1.1
Cisco - Firepower Threat Defense
Version: 7.3.1.2
Cisco - Firepower Threat Defense
Version: 7.4.1
Cisco - Firepower Threat Defense
Version: 7.4.1.1
Cisco - Firepower Threat Defense
Version: 7.4.2

> CVSS V3 METRICS

CVSS_VECTOR
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Network (N)
Exploit possible à distance via réseau (HTTP, API, etc.)
AC (Complexité d'Attaque)
Attack Complexity
Low (L)
Peu de conditions requises pour exploiter
PR (Privilèges Requis)
Privileges Required
None (N)
Aucune authentification requise
UI (Interaction Utilisateur)
User Interaction
None (N)
Aucune interaction utilisateur nécessaire
S (Périmètre)
Scope
Changed (C)
Impact s'étend au-delà du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
None (N)
Aucune divulgation d'informations
I (Impact Intégrité)
Integrity Impact
None (N)
Aucune modification de données possible
A (Impact Disponibilité)
Availability Impact
High (H)
Interruption totale du service possible

> RÉSUMÉ DES IMPACTS

Confidentialité
None
Aucune divulgation d'informations
Intégrité
None
Aucune modification de données possible
Disponibilité
High
Interruption totale du service possible

> HISTORIQUE DES MODIFICATIONS

Première apparition
23/10/2024 17:15
Source: NVD
📊 ENRICHISSEMENT 18/10/2025 14:55
CVEPROJECT
Champ modifié: CVE Project
Ancienne valeur:
Non
Nouvelle valeur:
Oui
Total des modifications: 1 Dernière mise à jour: 1 year ago
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