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.
Metrics
Affected Vendors & Products
Configuration 1 [-]
|
No data.
No data.
Advisories
| Source | ID | Title |
|---|---|---|
 EUVD |
EUVD-2023-24449 | 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. |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Tue, 11 Aug 2026 20:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Cisco secure Firewall Threat Defense
|
|
| CPEs | cpe:2.3:a:cisco:firepower_threat_defense:7.1.0.2:*:*:*:*:*:*:* cpe:2.3:a:cisco:firepower_threat_defense:7.1.0.3:*:*:*:*:*:*:* cpe:2.3:a:cisco:firepower_threat_defense:7.1.0:*:*:*:*:*:*:* cpe:2.3:a:cisco:firepower_threat_defense:7.2.0.1:*:*:*:*:*:*:* cpe:2.3:a:cisco:firepower_threat_defense:7.2.0:*:*:*:*:*:*:* cpe:2.3:a:cisco:firepower_threat_defense:7.2.1:*:*:*:*:*:*:* cpe:2.3:a:cisco:firepower_threat_defense:7.2.2:*:*:*:*:*:*:* cpe:2.3:a:cisco:firepower_threat_defense:7.2.3:*:*:*:*:*:*:* cpe:2.3:a:cisco:firepower_threat_defense:7.3.0:*:*:*:*:*:*:* cpe:2.3:a:cisco:firepower_threat_defense:7.3.1.1:*:*:*:*:*:*:* cpe:2.3:a:cisco:firepower_threat_defense:7.3.1:*:*:*:*:*:*:* |
cpe:2.3:a:cisco:secure_firewall_threat_defense:7.1.0.1:*:*:*:*:*:*:* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.1.0.2:*:*:*:*:*:*:* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.1.0.3:*:*:*:*:*:*:* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.1.0:*:*:*:*:*:*:* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.0.1:*:*:*:*:*:*:* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.0:*:*:*:*:*:*:* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.1:*:*:*:*:*:*:* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.2:*:*:*:*:*:*:* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.3:*:*:*:*:*:*:* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.3.0:*:*:*:*:*:*:* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.3.1.1:*:*:*:*:*:*:* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.3.1:*:*:*:*:*:*:* |
| Vendors & Products |
Cisco firepower Threat Defense
|
Cisco secure Firewall Threat Defense
|
Projects
Sign in to view the affected projects.
MITRE
Status: PUBLISHED
Assigner: cisco
Published:
Updated: 2024-08-02T09:05:36.263Z
Reserved: 2022-10-27T18:47:50.373Z
Link: CVE-2023-20270
Vulnrichment
No data.
NVD
Status : Modified
Published: 2023-11-01T17:15:11.783
Modified: 2026-08-11T19:33:44.513
Link: CVE-2023-20270
Redhat
No data.
OpenCVE Enrichment
No data.
Weaknesses