Description
A vulnerability in the SSL/TLS certificate handling of Snort 3 Detection Engine integration with Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the Snort 3 detection engine to restart. This vulnerability is due to a logic error that occurs when an SSL/TLS certificate that is under load is accessed when it is initiating an SSL connection. Under specific, time-based constraints, an attacker could exploit this vulnerability by sending a high rate of SSL/TLS connection requests to be inspected by the Snort 3 detection engine on an affected device. A successful exploit could allow the attacker to cause the Snort 3 detection engine to reload, resulting in either a bypass or a denial of service (DoS) condition, depending on device configuration. The Snort detection engine will restart automatically. No manual intervention is required.
Analysis
No analysis available yet.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cisco | Cisco Firepower Threat Defense Software | affected |
|
Configuration 1 [-]
|
No data.
No data available yet.
Remediation
No remediation available yet.
Tracking
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Advisories
| Source | ID | Title |
|---|---|---|
 EUVD |
EUVD-2023-24210 | A vulnerability in the SSL/TLS certificate handling of Snort 3 Detection Engine integration with Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the Snort 3 detection engine to restart. This vulnerability is due to a logic error that occurs when an SSL/TLS certificate that is under load is accessed when it is initiating an SSL connection. Under specific, time-based constraints, an attacker could exploit this vulnerability by sending a high rate of SSL/TLS connection requests to be inspected by the Snort 3 detection engine on an affected device. A successful exploit could allow the attacker to cause the Snort 3 detection engine to reload, resulting in either a bypass or a denial of service (DoS) condition, depending on device configuration. The Snort detection engine will restart automatically. No manual intervention is required. |
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:6.7.0.2:*:*:*:*:*:*:* cpe:2.3:a:cisco:firepower_threat_defense:6.7.0.3:*:*:*:*:*:*:* cpe:2.3:a:cisco:firepower_threat_defense:6.7.0:*:*:*:*:*:*:* cpe:2.3:a:cisco:firepower_threat_defense:7.0.0.1:*:*:*:*:*:*:* cpe:2.3:a:cisco:firepower_threat_defense:7.0.0:*:*:*:*:*:*:* cpe:2.3:a:cisco:firepower_threat_defense:7.0.1.1:*:*:*:*:*:*:* cpe:2.3:a:cisco:firepower_threat_defense:7.0.1:*:*:*:*:*:*:* cpe:2.3:a:cisco:firepower_threat_defense:7.0.2.1:*:*:*:*:*:*:* cpe:2.3:a:cisco:firepower_threat_defense:7.0.2:*:*:*:*:*:*:* cpe:2.3:a:cisco:firepower_threat_defense:7.0.3:*:*:*:*:*:*:* cpe:2.3:a:cisco:firepower_threat_defense:7.0.4:*:*:*:*:*:*:* cpe:2.3:a:cisco:firepower_threat_defense:7.0.5:*:*:*:*:*:*:* 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:secure_firewall_threat_defense:6.7.0.1:*:*:*:*:*:*:* cpe:2.3:a:cisco:secure_firewall_threat_defense:6.7.0.2:*:*:*:*:*:*:* cpe:2.3:a:cisco:secure_firewall_threat_defense:6.7.0.3:*:*:*:*:*:*:* cpe:2.3:a:cisco:secure_firewall_threat_defense:6.7.0:*:*:*:*:*:*:* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.0.0.1:*:*:*:*:*:*:* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.0.0:*:*:*:*:*:*:* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.0.1.1:*:*:*:*:*:*:* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.0.1:*:*:*:*:*:*:* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.0.2.1:*:*:*:*:*:*:* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.0.2:*:*:*:*:*:*:* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.0.3:*:*:*:*:*:*:* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.0.4:*:*:*:*:*:*:* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.0.5:*:*:*:*:*:*:* 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:*:*:*:*:*:*:* |
| Vendors & Products |
Cisco firepower Threat Defense
|
Cisco secure Firewall Threat Defense
|
MITRE
Status: PUBLISHED
Assigner: cisco
Published:
Updated: 2024-08-02T08:57:35.544Z
Reserved: 2022-10-27T18:47:50.312Z
Link: CVE-2023-20031
Vulnrichment
No data.
NVD
Status : Modified
Published: 2023-11-01T18:15:08.770
Modified: 2026-08-11T19:33:44.513
Link: CVE-2023-20031
Redhat
No data.
OpenCVE Enrichment
No data.
Weaknesses
-
CWE-244
Improper Clearing of Heap Memory Before Release ('Heap Inspection')
- NVD-CWE-noinfo