Cisco Firepower Threat Defense Data Acquisition protection mechanism

Summaryinfo

A vulnerability labeled as critical has been found in Cisco Firepower Threat Defense. Affected by this issue is some unknown functionality of the component Data Acquisition. Executing a manipulation can lead to protection mechanism. This vulnerability is tracked as CVE-2019-1669. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability has been found in Cisco Firepower Threat Defense (Firewall Software) (the affected version unknown) and classified as critical. This vulnerability affects an unknown part of the component Data Acquisition. The manipulation with an unknown input leads to a protection mechanism vulnerability. The CWE definition for the vulnerability is CWE-693. The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

A vulnerability in the data acquisition (DAQ) component of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass configured access control policies or cause a denial of service (DoS) condition. The vulnerability exists because the affected software improperly manages system memory resources when inspecting traffic. An attacker could exploit this vulnerability by generating specific traffic patterns for the software to inspect. A successful exploit could allow the attacker to exhaust system memory resources used for traffic inspection. Depending on the configuration, the FTD Software could fail open and cease to inspect traffic or fail closed and result in a DoS condition. This vulnerability may require manual intervention to restore the software.

The bug was discovered 01/23/2019. The weakness was disclosed 01/24/2019 as cisco-sa-20190123-firepowertds as confirmed advisory (Website). The advisory is shared for download at tools.cisco.com. This vulnerability was named CVE-2019-1669 since 12/06/2018. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 05/06/2020).

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $5k-$25k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 106721†). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Firewall Software

Vendor

• Cisco

Name

• Firepower Threat Defense

License

• commercial

Website

• Vendor: https://www.cisco.com/

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Once again VulDB remains the best source for vulnerability data.

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