cisco-sa-20190816-ftd-null: Cisco Firepower Threat Defense Software NULL Character Obfuscation Detection Bypass Vulnerability
First published: Fri Aug 16 2019(Updated: )
A vulnerability in the normalization functionality 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 insufficient normalization of a text-based payload. An attacker could exploit this vulnerability by sending traffic that contains specifically obfuscated payloads through an affected device. An exploit could allow the attacker to bypass filtering and deliver malicious payloads to protected systems that would otherwise be blocked. 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-null
Credit: NSS Labs Inc..
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Firepower Threat Defense | ||
| Cisco FirePOWER Services | ||
| Cisco Firepower Management Center |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
Frequently Asked Questions
What is the severity of cisco-sa-20190816-ftd-null?
The severity of cisco-sa-20190816-ftd-null is considered high due to the potential for remote attackers to exploit the vulnerability.
How do I fix cisco-sa-20190816-ftd-null?
To fix cisco-sa-20190816-ftd-null, users should apply the latest software updates provided by Cisco for the affected products.
What products are affected by cisco-sa-20190816-ftd-null?
Cisco Firepower Threat Defense Software, Cisco FirePOWER Services Software for ASA, and Cisco Firepower Management Center Software are affected by cisco-sa-20190816-ftd-null.
Can cisco-sa-20190816-ftd-null be exploited remotely?
Yes, cisco-sa-20190816-ftd-null can be exploited remotely by unauthenticated attackers.
What type of attack can cisco-sa-20190816-ftd-null facilitate?
cisco-sa-20190816-ftd-null can facilitate attacks that bypass filtering protections within the affected Cisco software.
- agent/type
- agent/event
- agent/first-publish-date
- agent/last-modified-date
- collector/cisco-advisory
- source/Cisco
- agent/severity
- agent/title
- agent/weakness
- agent/references
- agent/author
- agent/description
- agent/source
- agent/tags
- agent/softwarecombine
- agent/guess-ai
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- vendor/cisco
- canonical/cisco firepower threat defense
- canonical/cisco firepower services
- canonical/cisco firepower management center