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CVE-2024-20407

Severity CVSS v4.0:
Pending analysis
Type:
CWE-399 Resource Management Errors
Publication date:
23/10/2024
Last modified:
05/08/2025

Description

A vulnerability in the interaction between the TCP Intercept feature and the Snort 3 detection engine on Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass configured policies on an affected system. Devices that are configured with Snort 2 are not affected by this vulnerability. <br /> <br /> This vulnerability is due to a logic error when handling embryonic (half-open) TCP connections. An attacker could exploit this vulnerability by sending a crafted traffic pattern through an affected device. A successful exploit could allow unintended traffic to enter the network protected by the affected device.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N CVSS v3.1 Severity and Metrics:

Base Score: 5.80 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Changed
Confidentiality (C): None
Integrity (I): Low
Availability (A): None

Base Score 3.x
5.80
Severity 3.x
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:cisco:firepower_threat_defense:6.2.3:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense:6.2.3.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense:6.2.3.2:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense:6.2.3.3:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense:6.2.3.4:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense:6.2.3.5:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense:6.2.3.6:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense:6.2.3.7:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense:6.2.3.8:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense:6.2.3.9:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense:6.2.3.10:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense:6.2.3.11:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense:6.2.3.12:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense:6.2.3.13:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense:6.2.3.14:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools