cisco-sa-20190816-ftd-nspd: Cisco Firepower Threat Defense Software Nonstandard Protocol Detection Bypass Vulnerability
First published: Fri Aug 16 2019(Updated: )
A vulnerability in the protocol detection component of Cisco Firepower Threat Defense Software, Cisco FirePOWER Services Software for ASA, and Cisco Firepower Management Center Software could allow an unauthenticated, remote attacker to bypass filtering protections. The vulnerability is due to improper detection of the initial use of a protocol on a nonstandard port. An attacker could exploit this vulnerability by sending traffic on a nonstandard port for the protocol in use through an affected device. An exploit could allow the attacker to bypass filtering and deliver malicious requests to protected systems that would otherwise be blocked. Once the initial protocol flow on the nonstandard port is detected, future flows on the nonstandard port will be successfully detected and handled as configured by the applied policy. There are no workarounds that address this vulnerability. This advisory is available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190816-ftd-nspd
Credit: NSS Labs Inc..
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Firepower Threat Defense | ||
| Cisco FirePOWER Services | ||
| Cisco Firepower Management Center |
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Reference Links
Frequently Asked Questions
What is the severity of cisco-sa-20190816-ftd-nspd?
The cisco-sa-20190816-ftd-nspd vulnerability is rated as high severity due to its potential impact on security filtering protections.
How do I fix cisco-sa-20190816-ftd-nspd?
To fix cisco-sa-20190816-ftd-nspd, update to the latest release of the affected Cisco software.
Who is affected by cisco-sa-20190816-ftd-nspd?
Organizations using Cisco Firepower Threat Defense Software, Cisco FirePOWER Services Software for ASA, or Cisco Firepower Management Center Software are affected by cisco-sa-20190816-ftd-nspd.
What type of attack can exploit cisco-sa-20190816-ftd-nspd?
An unauthenticated, remote attacker can exploit cisco-sa-20190816-ftd-nspd to bypass filtering protections.
Is cisco-sa-20190816-ftd-nspd remotely exploitable?
Yes, cisco-sa-20190816-ftd-nspd is remotely exploitable by attackers without authentication.
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