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AUSCERT Security Bulletin
ASB-2015.0006
A number of vulnerabilities have been identified in SIMATIC
WinCC Sm@rtClient iOS App
16 January 2015
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AusCERT Security Bulletin Summary
---------------------------------
Product: SIMATIC WinCC Sm@rtClient
Operating System: Apple iOS
Impact/Access: Access Privileged Data -- Console/Physical
Unauthorised Access -- Console/Physical
Resolution: Patch/Upgrade
CVE Names: CVE-2014-5233 CVE-2014-5232 CVE-2014-5231
Member content until: Sunday, February 15 2015
OVERVIEW
A number of vulnerabilities have been identified in SIMATIC WinCC
Sm@rtClient iOS App prior to version 1.0.2. [1]
IMPACT
The vendor has provided the following details regarding these
vulnerabilities:
"Vulnerability 1 (CVE-2014-5231)
The existing storage mechanism for the application specific password
could allow attackers to extract the password and gain access to the
application if local access is available.
CVSS Base Score 4.6
CVSS Temporal Score 3.6
CVSS Overall Score 3.6 (AV:L/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:OF/RC:C)
Vulnerability 2 (CVE-2014-5232)
In case an application specific password is set, the user would not be prompted to enter
the password if the App was resumed from the background.
CVSS Base Score 4.6
CVSS Temporal Score 3.6
CVSS Overall Score 3.6 (AV:L/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:OF/RC:C)
Vulnerability 3 (CVE-2014-5233)
The implemented mechanism to process Sm@rtServer credentials could allow attackers
to extract the credentials if local access is available.
CVSS Base Score 4.6
CVSS Temporal Score 3.6
CVSS Overall Score 3.6 (AV:L/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:OF/RC:C)"
[1]
MITIGATION
The vendor recommends updating the application to correct these
issues. [1]
REFERENCES
[1] SSA-311299: Vulnerabilities in iOS App SIMATIC WinCC Sm@rtClient
http://www.siemens.com/innovation/pool/de/forschungsfelder/siemens_security_advisory_ssa-311299.pdf
AusCERT has made every effort to ensure that the information contained
in this document is accurate. However, the decision to use the information
described is the responsibility of each user or organisation. The decision to
follow or act on information or advice contained in this security bulletin is
the responsibility of each user or organisation, and should be considered in
accordance with your organisation's site policies and procedures. AusCERT
takes no responsibility for consequences which may arise from following or
acting on information or advice contained in this security bulletin.
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Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
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