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AUSCERT External Security Bulletin Redistribution
ESB-2015.1509
Sinapsi eSolar Light Plaintext Passwords Vulnerability
11 June 2015
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AusCERT Security Bulletin Summary
---------------------------------
Product: Sinapsi eSolar Light
Publisher: US-CERT
Operating System: Network Appliance
Impact/Access: Access Confidential Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2015-3949
Original Bulletin:
https://ics-cert.us-cert.gov/advisories/ICSA-15-160-02
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Advisory (ICSA-15-160-02)
Sinapsi eSolar Light Plaintext Passwords Vulnerability
Original release date: June 09, 2015
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 Maxim Rupp has identified plain text passwords in
Sinapsis eSolar Light application. Sinapsi has produced a new version to
mitigate this vulnerability.
AFFECTED PRODUCTS
The following Sinapsi eSolar Light versions are affected:
Sinapsi eSolar Light firmware versions prior to 2.0.3970_schsl_2.2.85.
IMPACT
Access to the plaintext passwords will compromise the confidentiality and
integrity of the mail client.
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
Sinapsi is an Italy-based company.
The affected product, Sinapsi eSolar Light, is a stand-alone system for the
monitoring and management of local and remote maintenance of small size
photovoltaic (PV) plants. According to Schneider Electric, Sinapsi eSolar
Light is deployed across several sectors including Commercial Facilities,
Critical Manufacturing, Energy, Water and Wastewater Systems, and others.
Sinapsi estimates that these products are used worldwide.
VULNERABILITY CHARACTERIZATION
VULNERABILITY OVERVIEW
PLAIN TEXT STORAGE OF A PASSWORD [a]
An attacker is able to view saved passwords from the DNS and mail
configuration by viewing the mail configuration page source.
CVE-2015-3949 [b] has been assigned to this vulnerability. A CVSS v2 base
score of 7.2 has been assigned; the CVSS vector string is
(AV:L/AC:L/Au:N/C:C/I:C/A:C). [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 accesses the
mail configuration option.
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
Sinapsi has developed a fix for the problem in firmware version
2.0.3970_schsl_2.2.85. Contact Sinapsi through its web site for support in
obtaining this firmware.
ICS-CERT recommends that users take defensive measures to minimize the risk of
exploitation of this vulnerability by ensuring the firmware version is up to
date.
Suggestions for additional mitigation solutions besides updating the firmware
include:
Limit access to the system to those who need access.
Change passwords frequently.
Isolate PCs from other functions.
Ensure physical security is in place, so that someone cannot just walk in
and steal your passwords.
ICS-CERT reminds organizations to perform proper impact analysis and risk
assessment prior to deploying defensive measures.
ICS-CERT also provides a section for control systems security recommended
practices on the ICS-CERT web page at:
http://ics-cert.us-cert.gov/content/recommended-practices. Several recommended
practices are available for reading and download, including Improving
Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
Additional mitigation guidance and recommended practices are publicly
available in the ICSCERT 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-256: Plain Text Storage of a Password,
http://cwe.mitre.org/data/definitions/256.html, web site last accessed June
09, 2015.
b. NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-3949,
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,
http://nvd.nist.gov/cvss.cfm?version=2&vector=AV:L/AC:L/Au:N/C:C/I:C/A:C, web
site last accessed June 09, 2015.
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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===========================================================================
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The University of Queensland
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Qld 4072
Internet Email: auscert@auscert.org.au
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