CVE-2016-6439

Severity Score

7.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

Una vulnerabilidad en el reensamblaje del motor de detección de paquetes HTTP para Cisco Firepower System Software en versiones anteriores a 6.0.1 podría permitir a un atacante remoto no autenticado provocar una condición de denegación de servicio (DoS) debido al reinicio inesperado del proceso Snort. La vulnerabilidad se debe al manejo incorrecto de un flujo de paquetes HTTP. Un atacante puede explotar esta vulnerabilidad mandado un flujo de paquetes HTTP manipulados al motor de detección en el dispositivo objetivo. Una explotación puede permitir al atacante provocar una condición DoS si el proceso Snort se reinicia y la inspección del tráfico se elude o el tráfico se cae.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2016-07-26 CVE Reserved
2016-10-27 CVE Published
2023-03-07 EPSS Updated
2024-08-06 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-399: Resource Management Errors

CAPEC

References (3)

URL	Tag	Source
http://www.securityfocus.com/bid/93787	Vdb Entry
http://www.securitytracker.com/id/1037061	Vdb Entry

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161019-fpsnort	2017-07-29

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Cisco Search vendor "Cisco"		Firepower Management Center Search vendor "Cisco" for product "Firepower Management Center"				5.3.0 Search vendor "Cisco" for product "Firepower Management Center" and version "5.3.0"		-		Affected
Cisco Search vendor "Cisco"		Firepower Management Center Search vendor "Cisco" for product "Firepower Management Center"				5.3.0.2 Search vendor "Cisco" for product "Firepower Management Center" and version "5.3.0.2"		-		Affected
Cisco Search vendor "Cisco"		Firepower Management Center Search vendor "Cisco" for product "Firepower Management Center"				5.3.0.3 Search vendor "Cisco" for product "Firepower Management Center" and version "5.3.0.3"		-		Affected
Cisco Search vendor "Cisco"		Firepower Management Center Search vendor "Cisco" for product "Firepower Management Center"				5.3.0.4 Search vendor "Cisco" for product "Firepower Management Center" and version "5.3.0.4"		-		Affected
Cisco Search vendor "Cisco"		Firepower Management Center Search vendor "Cisco" for product "Firepower Management Center"				5.3.1 Search vendor "Cisco" for product "Firepower Management Center" and version "5.3.1"		-		Affected
Cisco Search vendor "Cisco"		Firepower Management Center Search vendor "Cisco" for product "Firepower Management Center"				5.3.1.3 Search vendor "Cisco" for product "Firepower Management Center" and version "5.3.1.3"		-		Affected
Cisco Search vendor "Cisco"		Firepower Management Center Search vendor "Cisco" for product "Firepower Management Center"				5.3.1.4 Search vendor "Cisco" for product "Firepower Management Center" and version "5.3.1.4"		-		Affected
Cisco Search vendor "Cisco"		Firepower Management Center Search vendor "Cisco" for product "Firepower Management Center"				5.3.1.5 Search vendor "Cisco" for product "Firepower Management Center" and version "5.3.1.5"		-		Affected
Cisco Search vendor "Cisco"		Firepower Management Center Search vendor "Cisco" for product "Firepower Management Center"				5.3.1.6 Search vendor "Cisco" for product "Firepower Management Center" and version "5.3.1.6"		-		Affected
Cisco Search vendor "Cisco"		Firepower Management Center Search vendor "Cisco" for product "Firepower Management Center"				5.4.0 Search vendor "Cisco" for product "Firepower Management Center" and version "5.4.0"		-		Affected
Cisco Search vendor "Cisco"		Firepower Management Center Search vendor "Cisco" for product "Firepower Management Center"				5.4.0.2 Search vendor "Cisco" for product "Firepower Management Center" and version "5.4.0.2"		-		Affected
Cisco Search vendor "Cisco"		Firepower Management Center Search vendor "Cisco" for product "Firepower Management Center"				5.4.1 Search vendor "Cisco" for product "Firepower Management Center" and version "5.4.1"		-		Affected
Cisco Search vendor "Cisco"		Firepower Management Center Search vendor "Cisco" for product "Firepower Management Center"				5.4.1.1 Search vendor "Cisco" for product "Firepower Management Center" and version "5.4.1.1"		-		Affected
Cisco Search vendor "Cisco"		Firepower Management Center Search vendor "Cisco" for product "Firepower Management Center"				5.4.1.2 Search vendor "Cisco" for product "Firepower Management Center" and version "5.4.1.2"		-		Affected
Cisco Search vendor "Cisco"		Firepower Management Center Search vendor "Cisco" for product "Firepower Management Center"				5.4.1.3 Search vendor "Cisco" for product "Firepower Management Center" and version "5.4.1.3"		-		Affected
Cisco Search vendor "Cisco"		Firepower Management Center Search vendor "Cisco" for product "Firepower Management Center"				5.4.1.4 Search vendor "Cisco" for product "Firepower Management Center" and version "5.4.1.4"		-		Affected
Cisco Search vendor "Cisco"		Firepower Management Center Search vendor "Cisco" for product "Firepower Management Center"				5.4.1.5 Search vendor "Cisco" for product "Firepower Management Center" and version "5.4.1.5"		-		Affected
Cisco Search vendor "Cisco"		Firepower Management Center Search vendor "Cisco" for product "Firepower Management Center"				5.4.1.6 Search vendor "Cisco" for product "Firepower Management Center" and version "5.4.1.6"		-		Affected
Cisco Search vendor "Cisco"		Firepower Management Center Search vendor "Cisco" for product "Firepower Management Center"				5.4_base Search vendor "Cisco" for product "Firepower Management Center" and version "5.4_base"		-		Affected
Cisco Search vendor "Cisco"		Firepower Management Center Search vendor "Cisco" for product "Firepower Management Center"				6.0.0 Search vendor "Cisco" for product "Firepower Management Center" and version "6.0.0"		-		Affected
Cisco Search vendor "Cisco"		Firepower Management Center Search vendor "Cisco" for product "Firepower Management Center"				6.0.0.0 Search vendor "Cisco" for product "Firepower Management Center" and version "6.0.0.0"		-		Affected
Cisco Search vendor "Cisco"		Firepower Management Center Search vendor "Cisco" for product "Firepower Management Center"				6.0.0.1 Search vendor "Cisco" for product "Firepower Management Center" and version "6.0.0.1"		-		Affected
Cisco Search vendor "Cisco"		Firepower Management Center Search vendor "Cisco" for product "Firepower Management Center"				6.0.1 Search vendor "Cisco" for product "Firepower Management Center" and version "6.0.1"		-		Affected
Cisco Search vendor "Cisco"		Firepower Management Center Search vendor "Cisco" for product "Firepower Management Center"				6.0_base Search vendor "Cisco" for product "Firepower Management Center" and version "6.0_base"		-		Affected