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AUSCERT External Security Bulletin Redistribution
ESB-2017.2268
A vulnerability has been identified in i-SENS Inc. SmartLog
Diabetes Management Software
8 September 2017
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AusCERT Security Bulletin Summary
---------------------------------
Product: i-SENS Inc. SmartLog Diabetes Management Software
Publisher: ICS-CERT
Operating System: Windows
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2017-13993
Original Bulletin:
https://ics-cert.us-cert.gov/advisories/ICSMA-17-250-01
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Advisory (ICSMA-17-250-01)
i-SENS Inc. SmartLog Diabetes Management Software
Original release date: September 07, 2017
Legal Notice
All information products included in http://ics-cert.us-cert.gov are provided
"as is" for informational purposes only. The Department of Homeland Security
(DHS) does not provide any warranties of any kind regarding any information
contained within. DHS does not endorse any commercial product or service,
referenced in this product or otherwise. Further dissemination of this product
is governed by the Traffic Light Protocol (TLP) marking in the header. For
more information about TLP, see http://www.us-cert.gov/tlp/.
OVERVIEW
Independent researcher Mark Cross has identified an uncontrolled search path
element vulnerability in i-SENS Inc. SmartLog Diabetes Management Software.
i-SENS has produced an update that mitigates this vulnerability. Mark Cross
has tested the update to validate that it resolves the vulnerability.
AFFECTED PRODUCTS
The following SmartLog Diabetes Management Software versions are affected:
SmartLog Diabetes Management Software, Version 2.4.0 and prior versions.
IMPACT
Exploitation of this vulnerability could allow an authorized local attacker to
execute arbitrary code on the target system.
BACKGROUND
i-SENS Inc. is a South Korea-based company that maintains offices in several
countries around the world, including the United States, China, Germany, Peru,
India, and Chile.
The affected product, SmartLog Diabetes Management Software, is software for
patients to track and monitor personal blood glucose levels by connecting
their blood glucose meters via USB to a computer. According to i-SENS Inc.,
SmartLog Diabetes Management Software is deployed across the Healthcare and
Public Health sector. i-SENS estimates that these products are distributed and
used worldwide.
VULNERABILITY CHARACTERIZATION
VULNERABILITY OVERVIEW
UNCONTROLLED SEARCH PATH OR ELEMENTa
An uncontrolled search path element vulnerability has been identified which
could be exploited by placing a specially crafted DLL file in the search path.
If the malicious DLL is loaded prior to the valid DLL, an attacker could
execute arbitrary code on the system. This vulnerability does not affect the
connected blood glucose monitor and would not impact delivery of therapy to
the patient.
CVE-2017-13993b has been assigned to this vulnerability. A CVSS v3 base score
of 7.3 has been assigned; the CVSS vector string is
(AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H).c
VULNERABILITY DETAILS
EXPLOITABILITY
This vulnerability is not exploitable remotely and cannot be exploited without
user interaction. The exploit is only triggered when a local user runs the
vulnerable application and loads the specially crafted, malicious DLL file.
EXISTENCE OF EXPLOIT
No known public exploits specifically target this vulnerability.
DIFFICULTY
An attacker with a low skill level could exploit this vulnerability.
MITIGATION
i-SENS produced an update for the SmartLog Diabetes Management Software,
Version 2.4.1, which was released to the i-SENS website on September 1, 2017.
It can be found at the following location:
http://push.i-sens.com/smartlog2/2.4.1/Install_SmartLog_2.4.1.exe
NCCIC/ICS-CERT recommends that users take the following measures to protect
themselves from social engineering attacks:
1.Do not click web links or open unsolicited attachments in email messages.
2.Refer to Recognizing and Avoiding Email Scamsd for more information on
avoiding email scams.
3.Refer to Avoiding Social Engineering and Phishing Attackse for more
information on social engineering attacks
ICS-CERT also provides a section for security recommended practices on the
ICS-CERT web page at
http://ics-cert.us-cert.gov/content/recommended-practices. ICS-CERT reminds
organizations to perform proper impact analysis and risk assessment prior to
deploying defensive measures.
Additional mitigation guidance and recommended practices are publicly
available in the ICS-CERT Technical Information Paper,
ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation
Strategies, that is available for download from the ICS-CERT web site
(http://ics-cert.us-cert.gov/).
Organizations observing any suspected malicious activity should follow their
established internal procedures and report their findings to ICS-CERT for
tracking and correlation against other incidents.
a. CWE-428: Uncontrolled Search Path or Element,
http://cwe.mitre.org/data/definitions/428.html, web site last accessed
September 7, 2017.
b. NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-13993, NIST
uses this advisory to create the CVE web site report. This web site will be
active sometime after publication of this advisory.
c. CVSS Calculator,
https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S...,
web site last accessed September 7, 2017.
d. Recognizing and Avoiding Email Scams,
http://www.us-cert.gov/reading_room/emailscams_0905.pdf, web site last
accessed September 7, 2017.
e. National Cyber Alert System Cyber Security Tip ST04-014,
http://www.us-cert.gov/cas/tips/ST04-014.html, web site last accessed
September 7, 2017.
Contact Information
For any questions related to this report, please contact ICS-CERT at:
Email: ics-cert@hq.dhs.gov
Toll Free: 1-877-776-7585
International Callers: (208) 526-0900
For industrial control systems security information and incident reporting:
http://ics-cert.us-cert.gov
ICS-CERT continuously strives to improve its products and services. You can
help by choosing one of the links below to provide feedback about this
product.
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