SCADA Vulnerabilities & Exposures (SVE)

CRITIFENCE® SCADA Vulnerabilities and Exposures Database (SVE)

[SVE-360448185] Rockwell Automation Stratix Denial-of-Service and Memory Leak Vulnerabilities

Date Type Platform Author EDB-ID CVE-ID OSVDB-ID Download App SIS Signature
2016-10-13OTHERAllen-Bradley Stratix , Allen-Bradley ArmorStratixRockwell AutomationN/ACVE-2016-6393, CVE-2016-6382, CVE-2016-6380, CVE-2016-6385N/AN/AN/A

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# Rockwell Automation Stratix Denial-of-Service and Memory Leak Vulnerabilities
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### OVERVIEW

Rockwell Automation reports that several of the vulnerabilities contained in Cisco's semi-annual Cisco IOS and IOS XE Software Security Advisory Bundled Publicationa could also affect Rockwell Automation's Allen-Bradley Stratix industrial switches. Rockwell Automation has produced new versions to mitigate these vulnerabilities.

These vulnerabilities could be exploited remotely.





### AFFECTED PRODUCTS

The following Rockwell Automation Allen-Bradley Stratix industrial switches are affected:

Allen-Bradley Stratix 5400 Industrial Ethernet Switches versions 15.2(4)EA3 and earlier,
Allen-Bradley Stratix 5410 Industrial Distribution Switches versions 15.2(4)EA3 and earlier,
Allen-Bradley Stratix 5700 Industrial Managed Ethernet Switches versions 15.2(4)EA3 and earlier,
Allen-Bradley Stratix 8000 Modular Managed Ethernet Switches versions 15.2(4)EA3 and earlier, and
Allen-Bradley ArmorStratix 5700 Industrial Managed Ethernet Switches versions 15.2(4)EA3 and earlier.





### IMPACT

An attacker who successfully exploits these vulnerabilities may be able to affect the availability of the affected products via memory exhaustion, module restart, information corruption, or information exposure.

Impact to individual organizations depends on many factors that are unique to each organization. NCCIC/ICS-CERT recommends that organizations evaluate the impact of these vulnerabilities based on their operational environment, architecture, and product implementation.





### BACKGROUND

Rockwell Automation, which is a US-based company, provides industrial automation control and information products worldwide across a wide range of industries.

The affected products, Allen-Bradley Stratix products, are industrial Ethernet switches. According to Rockwell Automation, the Allen-Bradley Stratix switches are deployed across several sectors including Critical Manufacturing, Energy, and Water and Wastewater Systems. Rockwell Automation estimates that these products are used worldwide.





### VULNERABILITY CHARACTERIZATION


# VULNERABILITY OVERVIEW


INFORMATION EXPOSURE THROUGH AN ERROR MESSAGE

Information obtained from an error log message, which is displayed when a remote connection to the device fails, could be used to authenticate to the targeted device to cause a denial-of-service condition.
CVE-2016-6393 has been assigned to this vulnerability. A CVSS v3 base score of 8.6 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H).


IMPROPER INPUT VALIDATION

There are several ways that a maliciously crafted packet may cause the affected device to restart.
CVE-2016-6382 has been assigned to this vulnerability. A CVSS v3 base score of 8.6 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H).


PROTECTION MECHANISM FAILURE

An attacker could cause the device to reload or corrupt the information in the local DNS cache by intercepting and crafting a response message.
CVE-2016-6380 has been assigned to this vulnerability. A CVSS v3 base score of 9.9 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:H).


IMPROPER INPUT VALIDATION

Specially crafted packets sent to Port 4786/TCP could cause a memory leak that may result in a denial-of-service condition.
CVE-2016-6385 has been assigned to this vulnerability. A CVSS v3 base score of 8.6 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H).




### VULNERABILITY DETAILS


# EXPLOITABILITY

These vulnerabilities could be exploited remotely.


# EXISTENCE OF EXPLOIT

No known public exploits specifically target these vulnerabilities.


# DIFFICULTY

An attacker with a low to medium skills would be able to exploit these vulnerabilities.




### MITIGATION

Rockwell Automation encourages users using affected versions of these Stratix products to update to the latest available software versions addressing the associated risk, and including improvements to further harden the software and enhance its resilience against similar malicious attacks. Users can find the latest firmware version by selecting their device at the following web site:

http://compatibility.rockwellautomation.com/Pages/MultiProductDownload.aspx?famID=15


Additional precautions and risk mitigation strategies specific to these types of attacks are recommended in the Rockwell Automation security release. When possible, multiple strategies should be implemented simultaneously.

https://rockwellautomation.custhelp.com/app/answers/detail/a_id/942592


Please also refer to Cisco's security advisories for additional workarounds and details for these vulnerabilities:

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160928-aaados
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160928-msdp
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160928-dns
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160928-smi