SCADA Vulnerabilities & Exposures (SVE)

CRITIFENCE® SCADA Vulnerabilities and Exposures Database (SVE)

[SVE-892624751] Schneider Electric ConneXium Buffer Overflow Vulnerability

Date Type Platform Author EDB-ID CVE-ID OSVDB-ID Download App SIS Signature
2016-11-01NETWORKConneXium firewallNir Giller N/ACVE-2016-8352N/AN/AN/A

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# Schneider Electric ConneXium Buffer Overflow Vulnerability
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### OVERVIEW

Independent researcher Nir Giller has identified a buffer overflow vulnerability in Schneider Electric's ConneXium firewall product. Schneider Electric is developing a firmware update to mitigate this vulnerability.

This vulnerability is remotely exploitable.





### AFFECTED PRODUCTS

The following ConneXium firewalls are affected:

oTCSEFEC23F3F20 all versions,
oTCSEFEC23F3F21 all versions,
oTCSEFEC23FCF20 all versions,
oTCSEFEC23FCF21 all versions, and
oTCSEFEC2CF3F20 all versions.





### IMPACT

An exploit of this vulnerability could result in a buffer overflow that could allow an attacker to execute code during the SNMP (Simple Network Management Protocol) login authentication process.

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





### BACKGROUND

Schneider Electric's corporate headquarters is located in Paris, France, and maintains offices in more than 100 countries worldwide.

The affected products, ConneXium firewalls, are network firewalls. According to Schneider Electric, ConneXium firewalls are deployed across several sectors including Commercial Facilities Sector and others. Schneider Electric estimates that these products are used worldwide.





### VULNERABILITY CHARACTERIZATION


# VULNERABILITY OVERVIEW


STACK-BASED BUFFER OVERFLOW

A buffer overflow can be triggered during the SNMP login authentication process that may allow an attacker to remotely execute code.

CVE-2016-8352 has been assigned to this vulnerability. A CVSS v3 base score of 10.0 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H).





### VULNERABILITY DETAILS


# EXPLOITABILITY

This vulnerability could be exploited remotely.


# EXISTENCE OF EXPLOIT

No known public exploits specifically target this vulnerability.


# DIFFICULTY

An attacker with a low skill would be able to exploit this vulnerability.




### MITIGATION

Schneider Electric is in the process of updating ConneXium firewall products to resolve this vulnerability through a firmware update. The updated firmware will be available on the Schneider Electric web site for download.

Schneider Electric recommends users contact their local Schneider representative for additional information.