Cisco Firepower Threat Defense Software up to 7.2.0.1 Snort 3 Detection Engine denial of service

Summaryinfo

A vulnerability categorized as problematic has been discovered in Cisco Firepower Threat Defense Software. Impacted is an unknown function of the component Snort 3 Detection Engine. Such manipulation leads to denial of service. This vulnerability is listed as CVE-2023-20031. The attack may be performed from remote. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Cisco Firepower Threat Defense Software (Firewall Software) and classified as problematic. Affected by this issue is an unknown functionality of the component Snort 3 Detection Engine. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability. CVE summarizes:

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.

The weakness was presented 11/01/2023 as cisco-sa-ftd-snort3-8U4HHxH8. The advisory is available at sec.cloudapps.cisco.com. This vulnerability is handled as CVE-2023-20031 since 10/27/2022. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

Upgrading eliminates this vulnerability.

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Productinfo

Type

• Firewall Software

Vendor

• Cisco

Name

• Firepower Threat Defense Software

Version

• 6.7.0
• 6.7.0.1
• 6.7.0.2
• 6.7.0.3
• 7.0.0
• 7.0.0.1
• 7.0.1
• 7.0.1.1
• 7.0.2
• 7.0.2.1
• 7.0.3
• 7.0.4
• 7.0.5
• 7.2.0
• 7.2.0.1

License

• commercial

Website

• Vendor: https://www.cisco.com/

CPE 2.3info

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CPE 2.2info

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