Cisco ASA/Firepower Threat Defense DHCP DHCP Packet resource consumption

Summaryinfo

A vulnerability was found in Cisco ASA and Firepower Threat Defense. It has been declared as problematic. This issue affects some unknown processing of the component DHCP Module. The manipulation as part of DHCP Packet results in resource consumption. This vulnerability was named CVE-2020-3306. The attack may be performed from remote. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in Cisco ASA and Firepower Threat Defense (Firewall Software) (version now known). Affected is some unknown processing of the component DHCP Module. The manipulation as part of a DHCP Packet leads to a resource consumption vulnerability. CWE is classifying the issue as 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. This is going to have an impact on availability. CVE summarizes:

A vulnerability in the DHCP module of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on the affected device. The vulnerability is due to incorrect processing of certain DHCP packets. An attacker could exploit this vulnerability by sending a crafted DHCP packet to the affected device. A successful exploit could allow the attacker to cause a DoS condition on the affected device.

The weakness was presented 05/06/2020 as cisco-sa-asaftd-dos-qk8cTGLz as confirmed advisory (Website). The advisory is available at tools.cisco.com. This vulnerability is traded as CVE-2020-3306 since 12/12/2019. The exploitability is told to be difficult. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. 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.

See VDB-154817 and VDB-154816 for similar entries. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Firewall Software

Vendor

• Cisco

Name

• ASA
• Firepower Threat Defense

License

• commercial

Website

• Vendor: https://www.cisco.com/

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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