CVE-2016-6439

Description

A vulnerability in the detection engine reassembly of HTTP packets for Cisco Firepower System Software before 6.0.1 could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition due to the Snort process unexpectedly restarting. The vulnerability is due to improper handling of an HTTP packet stream. An attacker could exploit this vulnerability by sending a crafted HTTP packet stream to the detection engine on the targeted device. An exploit could allow the attacker to cause a DoS condition if the Snort process restarts and traffic inspection is bypassed or traffic is dropped.

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.22%
Vendor Advisory cisco.com
Affected: n/a Cisco Firepower System Software before 6.0.1
Published at:
Updated at:

References

Link Tags
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161019-fpsnort vendor advisory
http://www.securitytracker.com/id/1037061 vdb entry
http://www.securityfocus.com/bid/93787 vdb entry

Frequently Asked Questions

What is the severity of CVE-2016-6439?
CVE-2016-6439 has been scored as a high severity vulnerability.
How to fix CVE-2016-6439?
To fix CVE-2016-6439, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-6439 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2016-6439 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2016-6439?
CVE-2016-6439 affects n/a Cisco Firepower System Software before 6.0.1.
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