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CVE-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 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.

Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Cisco ≫ Firepower Threat Defense Version7.0.0
Cisco ≫ Firepower Threat Defense Version7.0.0.1
Cisco ≫ Firepower Threat Defense Version7.0.1
Cisco ≫ Firepower Threat Defense Version7.0.1.1
Cisco ≫ Firepower Threat Defense Version7.0.2
Cisco ≫ Firepower Threat Defense Version7.0.2.1
Cisco ≫ Firepower Threat Defense Version7.0.3
Cisco ≫ Firepower Threat Defense Version7.0.4
Cisco ≫ Firepower Threat Defense Version7.0.5
Cisco ≫ Firepower Threat Defense Version7.1.0
Cisco ≫ Firepower Threat Defense Version7.1.0.1
Cisco ≫ Firepower Threat Defense Version7.1.0.2
Cisco ≫ Firepower Threat Defense Version7.1.0.3
Cisco ≫ Firepower Threat Defense Version7.2.0
Cisco ≫ Firepower Threat Defense Version7.2.0.1
Cisco ≫ Firepower Threat Defense Version7.2.1
Cisco ≫ Firepower Threat Defense Version7.2.2
Cisco ≫ Firepower Threat Defense Version7.2.3
Cisco ≫ Firepower Threat Defense Version7.3.0
Cisco ≫ Firepower Threat Defense Version7.3.1
Cisco ≫ Firepower Threat Defense Version7.3.1.1
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.01% 0.008
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 4 2.2 1.4
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:L
psirt@cisco.com 4 2.2 1.4
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:L
CWE-244 Improper Clearing of Heap Memory Before Release ('Heap Inspection')

Using realloc() to resize buffers that store sensitive information can leave the sensitive information exposed to attack, because it is not removed from memory.