Vulnerability Name:

CVE-2016-6439 (CCN-117964)

Assigned:2016-10-19
Published:2016-10-19
Updated:2017-07-29
Summary: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.
CVSS v3 Severity:7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
7.5 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:4.3 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
7.8 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-399
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2016-6439

Source: BID
Type: UNKNOWN
93787

Source: CCN
Type: BID-93787
Multiple Cisco Products CVE-2016-6439 Denial of Service Vulnerability

Source: SECTRACK
Type: UNKNOWN
1037061

Source: XF
Type: UNKNOWN
cisco-firepower-cve20166439-dos(117964)

Source: CCN
Type: Cisco Security Advisory cisco-sa-20161019-fpsnort
Cisco Firepower Detection Engine HTTP Denial of Service Vulnerability

Source: CONFIRM
Type: Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161019-fpsnort

Vulnerable Configuration:Configuration 1:
  • cpe:/a:cisco:firepower_management_center:5.3.0:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:firepower_management_center:5.3.0.2:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:firepower_management_center:5.3.0.3:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:firepower_management_center:5.3.0.4:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:firepower_management_center:5.3.1:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:firepower_management_center:5.3.1.3:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:firepower_management_center:5.3.1.4:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:firepower_management_center:5.3.1.5:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:firepower_management_center:5.3.1.6:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:firepower_management_center:5.4.0:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:firepower_management_center:5.4.0.2:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:firepower_management_center:5.4.1:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:firepower_management_center:5.4.1.1:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:firepower_management_center:5.4.1.2:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:firepower_management_center:5.4.1.3:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:firepower_management_center:5.4.1.4:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:firepower_management_center:5.4.1.5:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:firepower_management_center:5.4.1.6:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:firepower_management_center:5.4_base:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:firepower_management_center:6.0.0:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:firepower_management_center:6.0.0.0:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:firepower_management_center:6.0.0.1:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:firepower_management_center:6.0.1:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:firepower_management_center:6.0_base:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    cisco firepower management center 5.3.0
    cisco firepower management center 5.3.0.2
    cisco firepower management center 5.3.0.3
    cisco firepower management center 5.3.0.4
    cisco firepower management center 5.3.1
    cisco firepower management center 5.3.1.3
    cisco firepower management center 5.3.1.4
    cisco firepower management center 5.3.1.5
    cisco firepower management center 5.3.1.6
    cisco firepower management center 5.4.0
    cisco firepower management center 5.4.0.2
    cisco firepower management center 5.4.1
    cisco firepower management center 5.4.1.1
    cisco firepower management center 5.4.1.2
    cisco firepower management center 5.4.1.3
    cisco firepower management center 5.4.1.4
    cisco firepower management center 5.4.1.5
    cisco firepower management center 5.4.1.6
    cisco firepower management center 5.4_base
    cisco firepower management center 6.0.0
    cisco firepower management center 6.0.0.0
    cisco firepower management center 6.0.0.1
    cisco firepower management center 6.0.1
    cisco firepower management center 6.0_base