CVE-2023-20177
published 2023-11-01CVE-2023-20177: A vulnerability in the SSL file policy implementation of Cisco Firepower Threat Defense (FTD) Software that occurs when the SSL/TLS connection is configured…
PriorityP419medium4CVSS 3.1
AVNACHPRNUINSCCNINAL
EPSS
0.53%
41.2th percentile
A vulnerability in the SSL file policy implementation of Cisco Firepower Threat Defense (FTD) Software that occurs when the SSL/TLS connection is configured with a URL Category and the Snort 3 detection engine could allow an unauthenticated, remote attacker to cause the Snort 3 detection engine to unexpectedly restart. This vulnerability exists because a logic error occurs when a Snort 3 detection engine inspects an SSL/TLS connection that has either a URL Category configured on the SSL file policy or a URL Category configured on an access control policy with TLS server identity discovery enabled. Under specific, time-based constraints, an attacker could exploit this vulnerability by sending a crafted SSL/TLS connection through an affected device. A successful exploit could allow the attacker to trigger an unexpected reload of the Snort 3 detection engine, resulting in either a bypass or denial of service (DoS) condition, depending on device configuration. The Snort 3 detection engine will restart automatically. No manual intervention is required.
Affected
43 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| cisco | cisco_firepower_threat_defense_software | — | — |
| cisco | cisco_firepower_threat_defense_software | — | — |
| cisco | cisco_firepower_threat_defense_software | — | — |
| cisco | cisco_firepower_threat_defense_software | — | — |
| cisco | cisco_firepower_threat_defense_software | — | — |
| cisco | cisco_firepower_threat_defense_software | — | — |
| cisco | cisco_firepower_threat_defense_software | — | — |
| cisco | cisco_firepower_threat_defense_software | — | — |
| cisco | cisco_firepower_threat_defense_software | — | — |
| cisco | cisco_firepower_threat_defense_software | — | — |
| cisco | cisco_firepower_threat_defense_software | — | — |
| cisco | cisco_firepower_threat_defense_software | — | — |
| cisco | cisco_firepower_threat_defense_software | — | — |
| cisco | cisco_firepower_threat_defense_software | — | — |
| cisco | cisco_firepower_threat_defense_software | — | — |
| cisco | cisco_firepower_threat_defense_software | — | — |
| cisco | cisco_firepower_threat_defense_software | — | — |
| cisco | cisco_firepower_threat_defense_software | — | — |
| cisco | cisco_firepower_threat_defense_software | — | — |
| cisco | cisco_firepower_threat_defense_software | — | — |
| cisco | cisco_firepower_threat_defense_software | — | — |
| cisco | firepower_threat_defense | — | — |
| cisco | firepower_threat_defense | — | — |
| cisco | firepower_threat_defense | — | — |
| cisco | firepower_threat_defense | — | — |
CVSS provenance
nvdv3.14.0MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:L
vendor_cisco4.0MEDIUM
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GHSA
GHSA-753m-gv8q-x327: A vulnerability in the SSL file policy implementation of Cisco Firepower Threat Defense (FTD) Software that occurs when the SSL/TLS connection is conf
ghsa_unreviewed·2023-11-01
CVE-2023-20177 [MEDIUM] CWE-244 GHSA-753m-gv8q-x327: A vulnerability in the SSL file policy implementation of Cisco Firepower Threat Defense (FTD) Software that occurs when the SSL/TLS connection is conf
A vulnerability in the SSL file policy implementation of Cisco Firepower Threat Defense (FTD) Software that occurs when the SSL/TLS connection is configured with a URL Category and the Snort 3 detection engine could allow an unauthenticated, remote attacker to cause the Snort 3 detection engine to unexpectedly restart. This vulnerability exists because a logic error occurs when a Snort 3 detection engine inspects an SSL/TLS connection that has either a URL Category configured on the SSL file policy or a URL Category configured on an access control policy with TLS server identity discovery enabled. Under specific, time-based constraints, an attacker could exploit this vulnerability by sending a crafted SSL/TLS connection through an affected device. A successful exploit could allow the attac
Cisco
Cisco Firepower Threat Defense Software SSL/TLS URL Category and Snort 3 Detection Engine Bypass and Denial of Service Vulnerability
vendor_cisco·2023-11-01·CVSS 4.0
CVE-2023-20177 [MEDIUM] CWE-244 Cisco Firepower Threat Defense Software SSL/TLS URL Category and Snort 3 Detection Engine Bypass and Denial of Service Vulnerability
Cisco Firepower Threat Defense Software SSL/TLS URL Category and Snort 3 Detection Engine Bypass and Denial of Service Vulnerability
A vulnerability in the SSL file policy implementation of Cisco Firepower Threat Defense (FTD) Software that occurs when the SSL/TLS connection is configured with a URL Category and the Snort 3 detection engine could allow an unauthenticated, remote attacker to cause the Snort 3 detection engine to unexpectedly restart.
This vulnerability exists because a logic error occurs when a Snort 3 detection engine inspects an SSL/TLS connection that has either a URL Category configured on the SSL file policy or a URL Category configured on an access control policy with TLS server identity discovery enabled. Under specific, time-based constraints, an attacker could ex
Cisco
Cisco Firepower Threat Defense Software SSL/TLS URL Category and Snort 3 Detection Engine Bypass and Denial of Service Vulnerability
vendor_cisco·CVSS 3.1
CVE-2023-20177 Cisco Firepower Threat Defense Software SSL/TLS URL Category and Snort 3 Detection Engine Bypass and Denial of Service Vulnerability
CVE-2023-20177: Cisco Firepower Threat Defense Software SSL/TLS URL Category and Snort 3 Detection Engine Bypass and Denial of Service Vulnerability
A vulnerability in the SSL file policy implementation of Cisco Firepower Threat Defense (FTD) Software that occurs when the SSL/TLS connection is configured with a URL Category and the Snort 3 detection engine could allow an unauthenticated, remote attacker to cause the Snort 3 detection engine to unexpectedly restart. This vulnerability exists because a logic error occurs when a Snort 3 detection engine inspects an SSL/TLS connection that has either a URL Category configured on the SSL file policy or a URL Category configured on an access control policy with TLS server identity discovery enabled. Under specific, time-based constraints, an att
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2023-11-01
Published