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Cisco FTD: CVE-2023-20031: Cisco Firepower Threat Defense Software SSL and Snort 3 Detection Engine Bypass and Denial of Service Vulnerability

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Cisco FTD: CVE-2023-20031: Cisco Firepower Threat Defense Software SSL and Snort 3 Detection Engine Bypass and Denial of Service Vulnerability

Severity
3
CVSS
(AV:N/AC:H/Au:N/C:N/I:P/A:N)
Published
11/01/2023
Created
02/07/2025
Added
01/29/2025
Modified
02/12/2025

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.

Solution(s)

  • cisco-ftd-upgrade-latest

References

  • https://attackerkb.com/topics/cve-2023-20031
  • CVE - 2023-20031
  • https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-snort3-8U4HHxH8
  • cisco-sa-ftd-snort3-8U4HHxH8
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  • 最后回复

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