SCADA Vulnerabilities & Exposures (SVE)

CRITIFENCE® SCADA Vulnerabilities and Exposures Database (SVE)

[SVE-757365939] Siemens SICAM PAS Vulnerabilities

Date Type Platform Author EDB-ID CVE-ID OSVDB-ID Download App SIS Signature
2016-12-01OtherSiemensIlya Karpov and Dmitry SklyarovN/ACVE-2016-8567 CVE-2016-8566 CVE-2016-9156 CVE-2016-9157 N/AN/AN/A

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# Siemens SICAM PAS Vulnerabilities
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### OVERVIEW

Siemens has released an advisory to inform its users on how to mitigate vulnerabilities that affect SICAM PAS. Ilya Karpov and Dmitry Sklyarov of Positive Technologies and Sergey Temnikov and Vladimir Dashchenko of Kaspersky Lab coordinated these vulnerabilities directly with Siemens. Siemens has produced an update to mitigate some of these vulnerabilities.
Some of these vulnerabilities could be exploited remotely.



### AFFECTED PRODUCTS

The following SICAM PAS versions are affected:
SICAM PAS: All versions.



### IMPACT

Successful exploitation of these vulnerabilities may allow an attacker to cause a denial-of-service condition or remotely exploit arbitrary code.
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

Siemens is a multinational company headquartered in Munich, Germany.
The affected product, SICAM PAS, is energy automation software for operating electrical substations. According to Siemens, SICAM PAS is deployed across the Energy sector. Siemens estimates that this product is used worldwide.



### VULNERABILITY CHARACTERIZATION

# VULNERABILITY OVERVIEW

USE OF HARD-CODED CREDENTIALSa
A factory account with hard-coded passwords is present in the SICAM PAS installations. Attackers might gain privileged access to the database over Port 2638/TCP.
SICAM PAS Versions 8.00 and higher are not affected by this vulnerability.
CVE-2016-8567b has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

STORING PASSWORDS IN A RECOVERABLE FORMATd
An authenticated local attacker with certain privileges could possibly reconstruct the passwords of users for accessing the database.
SICAM PAS Versions 8.00 and higher are not affected by this vulnerability.
CVE-2016-8566e has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)

FILES OR DIRECTORIES ACCESSIBLE TO EXTERNAL PARTIESg
A remote attacker could use specially crafted packets sent to Port 19235/TCP to upload, download, or delete files in certain parts of the file system.
CVE-2016-9156h has been assigned to this vulnerability. A CVSS v3 base score of 7.3 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)

WEAKNESSES THAT AFFECT MEMORYj
Specially crafted packets sent to port 19234/TCP could cause a denial of service condition and potentially lead to unauthenticated remote code execution.
CVE-2016-9157k has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)




### VULNERABILITY DETAILS

# EXPLOITABILITY

Some of these vulnerabilities could be exploited remotely.



# EXISTENCE OF EXPLOIT

No known public exploits specifically target these vulnerabilities.



# DIFFICULTY

An attacker with low skill would be able to exploit these vulnerabilities.



### MITIGATION

SICAM PAS Versions 8.00 and higher fix some of these vulnerabilities
Siemens recommends that users upgrade to the latest version
In order to receive the SICAM PAS V8.08 update, please contact the Siemens Energy Customer Support Center at support.energy@siemens.com
(link sends e-mail)
.
For the remaining vulnerabilities Siemens recommends users explicitly block access to Ports 19235/TCP and 19234/TCP with appropriate mechanism, e.g., using the Windows firewall, until patches are available.
Siemens strongly recommends users protect network access with appropriate mechanisms (e.g., firewalls, segmentation, VPN)
Siemens also advises that users configure the operational environment according to Siemens' Operational Guidelines for Industrial Security:
https://www.siemens.com/cert/operational-guidelines-industrial-security


For more information on this vulnerability and more detailed mitigation instructions, please see Siemens Security Advisory SSA-946325 at the following location:
http://www.siemens.com/cert/advisories