Cisco Firepower Threat Defense Access Control Policy Packet resource consumption

Summaryinfo

A vulnerability labeled as problematic has been found in Cisco Firepower Threat Defense. Impacted is an unknown function of the component Access Control Policy. Such manipulation as part of Packet leads to resource consumption. This vulnerability is listed as CVE-2020-3255. The attack may be performed from remote. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Cisco Firepower Threat Defense (Firewall Software) (the affected version unknown). It has been rated as problematic. Affected by this issue is an unknown part of the component Access Control Policy. The manipulation as part of a Packet leads to a resource consumption vulnerability. Using CWE to declare the problem leads to CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. Impacted is availability. CVE summarizes:

A vulnerability in the packet processing functionality of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to inefficient memory management. An attacker could exploit this vulnerability by sending a high rate of IPv4 or IPv6 traffic through an affected device. This traffic would need to match a configured block action in an access control policy. An exploit could allow the attacker to cause a memory exhaustion condition on the affected device, which would result in a DoS for traffic transiting the device, as well as sluggish performance of the management interface. Once the flood is stopped, performance should return to previous states.

The weakness was presented 05/06/2020 as cisco-sa-ftd-dos-N2vQZASR as confirmed advisory (Website). The advisory is shared for download at tools.cisco.com. This vulnerability is handled as CVE-2020-3255 since 12/12/2019. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1499.

Upgrading eliminates this vulnerability.

See VDB-154812, VDB-154811 and VDB-154806 for similar entries. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Firewall Software

Vendor

• Cisco

Name

• Firepower Threat Defense

License

• commercial

Website

• Vendor: https://www.cisco.com/

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Entryinfo

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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