CVE-2023-20031
CVE-2023-20031
In short
A flaw in how Snort 3 handles SSL/TLS certificates under heavy load can be triggered by sending many connection requests at once, causing the detection engine to restart and potentially bypass security checks or cause a service interruption.
Technical detail
A logic error in SSL/TLS certificate handling within Snort 3 on Cisco FTD allows an unauthenticated remote attacker to trigger engine restart via high-rate SSL/TLS connection requests under specific timing conditions, resulting in potential detection bypass or denial of service; the engine restarts automatically without manual intervention.
Summary generated and translated by AI from the official 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.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N
Affected products
Cisco · Cisco Firepower Threat Defense SoftwareWant to know if your infrastructure is exposed to this?
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