SSA-431802: Multiple Vulnerabilities in SCALANCE W1750D
Publication Date:
2020-11-10
Last Update:
2020-11-10
Current Version:
V1.0
CVSS v3.1 Base Score:
9.8
SUMMARY
Siemens SCALANCE W1750D is a brandlabled device. Aruba has released a related security advisory (ARUBA-PSA-2016-004) [0] disclosing vulnerabilities in its Aruba Instant product line. The advisory contains multiple related vulnerabilities that are summarized in CVE-2016-2031.
This advisory is a reminder to customers that the PAPI protocol is not a secure protocol and that some device configurations must be taken to mitigate risks. Although this information was previously disclosed, an impending public disclosure by the Google Security Team (focused on Aruba Instant) will call out the vulnerable details of this protocol and bring it to the attention of the attacker community.
Siemens recommends specific countermeasures until fixes are available.
[0] https://www.arubanetworks.com/assets/alert/ARUBA-PSA-2016-004.txt
AFFECTED PRODUCTS AND SOLUTION
WORKAROUNDS AND MITIGATIONS
Siemens has identified the following specific workarounds and mitigations that customers can apply to reduce the risk:
GENERAL SECURITY RECOMMENDATIONS
As a general security measure, Siemens strongly recommends to protect network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends to configure the environment according to Siemens’ operational guidelines for Industrial Security (Download: https://www.siemens.com/cert/operational-guidelines-industrial-security ), and to follow the recommendations in the product manuals.
Additional information on Industrial Security by Siemens can be found at: https://www.siemens.com/industrialsecurity
PRODUCT DESCRIPTION
The SCALANCE W1750D controller-based Direct Access Points support radio transmission according to the latest IWLAN standard IEEE 802.11ac Wave 2.
VULNERABILITY CLASSIFICATION
The vulnerability classification has been performed by using the CVSS scoring system in version 3.1
(CVSS v3.1) (https://www.first.org/cvss ). The CVSS environmental score is specific to the customer’s
environment and will impact the overall CVSS score. The environmental score should therefore be
individually defined by the customer to accomplish final scoring.
An additional classification has been performed using the CWE classification, a community-developed
list of common software security weaknesses. This serves as a common language and as a baseline for
weakness identification, mitigation, and prevention efforts. A detailed list of CWE classes can be found
at: https://cwe.mitre.org/ .
Vulnerability CVE-2016-2031
Multiple vulnerabilities exists in Aruba Instate before 4.1.3.0 and 4.2.3.1 due to insufficient validation of user-supplied input and insufficient checking of parameters, which could allow a malicious user to bypass security restrictions, obtain sensitive information, perform unauthorized actions and execute arbitrary code.
CVSS v3.1 Base Score
9.8
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
CWE:
CWE-20: Improper Input Validation
ADDITIONAL INFORMATION
For further inquiries on security vulnerabilities in Siemens products and solutions, please contact the
Siemens ProductCERT:
https://www.siemens.com/cert/advisories
HISTORY DATA
V1.0 (2020-11-10): Publication Date
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