CVE-2024-20407

MEDIUM EPSS 30.9%
Published Oct 23, 20241y ago · Modified Jun 17, 20261w ago
5.8 CVSS 3.1
Medium
Find Similar
Published Oct 23, 2024 1y ago
Last Modified Jun 17, 2026 1w ago

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. 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.

CVSS Details

Base Score
5.8
Exploitability
3.9
Impact
1.4
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Changed
Confidentiality None
Integrity Low
Availability None

Threat Intelligence

EPSS Exploit Probability
30.9% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-399

Affected Products 90

VendorProductVersionRange
ciscofirepower_threat_defense6.2.3any
ciscofirepower_threat_defense6.2.3.1any
ciscofirepower_threat_defense6.2.3.2any
ciscofirepower_threat_defense6.2.3.3any
ciscofirepower_threat_defense6.2.3.4any
ciscofirepower_threat_defense6.2.3.5any
ciscofirepower_threat_defense6.2.3.6any
ciscofirepower_threat_defense6.2.3.7any
ciscofirepower_threat_defense6.2.3.8any
ciscofirepower_threat_defense6.2.3.9any
ciscofirepower_threat_defense6.2.3.10any
ciscofirepower_threat_defense6.2.3.11any
ciscofirepower_threat_defense6.2.3.12any
ciscofirepower_threat_defense6.2.3.13any
ciscofirepower_threat_defense6.2.3.14any
ciscofirepower_threat_defense6.2.3.15any
ciscofirepower_threat_defense6.2.3.16any
ciscofirepower_threat_defense6.2.3.17any
ciscofirepower_threat_defense6.2.3.18any
ciscofirepower_threat_defense6.4.0any
ciscofirepower_threat_defense6.4.0.1any
ciscofirepower_threat_defense6.4.0.2any
ciscofirepower_threat_defense6.4.0.3any
ciscofirepower_threat_defense6.4.0.4any
ciscofirepower_threat_defense6.4.0.5any
ciscofirepower_threat_defense6.4.0.6any
ciscofirepower_threat_defense6.4.0.7any
ciscofirepower_threat_defense6.4.0.8any
ciscofirepower_threat_defense6.4.0.9any
ciscofirepower_threat_defense6.4.0.10any
ciscofirepower_threat_defense6.4.0.11any
ciscofirepower_threat_defense6.4.0.12any
ciscofirepower_threat_defense6.4.0.13any
ciscofirepower_threat_defense6.4.0.14any
ciscofirepower_threat_defense6.4.0.15any
ciscofirepower_threat_defense6.4.0.16any
ciscofirepower_threat_defense6.4.0.17any
ciscofirepower_threat_defense6.4.0.18any
ciscofirepower_threat_defense6.6.0any
ciscofirepower_threat_defense6.6.0.1any
ciscofirepower_threat_defense6.6.1any
ciscofirepower_threat_defense6.6.3any
ciscofirepower_threat_defense6.6.4any
ciscofirepower_threat_defense6.6.5any
ciscofirepower_threat_defense6.6.5.1any
ciscofirepower_threat_defense6.6.5.2any
ciscofirepower_threat_defense6.6.7any
ciscofirepower_threat_defense6.6.7.1any
ciscofirepower_threat_defense6.6.7.2any
ciscofirepower_threat_defense6.7.0any
ciscofirepower_threat_defense6.7.0.1any
ciscofirepower_threat_defense6.7.0.2any
ciscofirepower_threat_defense6.7.0.3any
ciscofirepower_threat_defense7.0.0any
ciscofirepower_threat_defense7.0.0.1any
ciscofirepower_threat_defense7.0.1any
ciscofirepower_threat_defense7.0.1.1any
ciscofirepower_threat_defense7.0.2any
ciscofirepower_threat_defense7.0.2.1any
ciscofirepower_threat_defense7.0.3any
ciscofirepower_threat_defense7.0.4any
ciscofirepower_threat_defense7.0.5any
ciscofirepower_threat_defense7.0.6any
ciscofirepower_threat_defense7.0.6.1any
ciscofirepower_threat_defense7.0.6.2any
ciscofirepower_threat_defense7.1.0any
ciscofirepower_threat_defense7.1.0.1any
ciscofirepower_threat_defense7.1.0.2any
ciscofirepower_threat_defense7.1.0.3any
ciscofirepower_threat_defense7.2.0any
ciscofirepower_threat_defense7.2.0.1any
ciscofirepower_threat_defense7.2.1any
ciscofirepower_threat_defense7.2.2any
ciscofirepower_threat_defense7.2.3any
ciscofirepower_threat_defense7.2.4any
ciscofirepower_threat_defense7.2.4.1any
ciscofirepower_threat_defense7.2.5any
ciscofirepower_threat_defense7.2.5.1any
ciscofirepower_threat_defense7.2.5.2any
ciscofirepower_threat_defense7.2.6any
ciscofirepower_threat_defense7.2.7any
ciscofirepower_threat_defense7.2.8any
ciscofirepower_threat_defense7.2.8.1any
ciscofirepower_threat_defense7.3.0any
ciscofirepower_threat_defense7.3.1any
ciscofirepower_threat_defense7.3.1.1any
ciscofirepower_threat_defense7.3.1.2any
ciscofirepower_threat_defense7.4.0any
ciscofirepower_threat_defense7.4.1any
ciscofirepower_threat_defense7.4.1.1any

References 1

  • sec.cloudapps.cisco.com https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-bypass-PTry37fX
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.