Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2016.0275
GE SNMP/Web Interface Vulnerabilities
3 February 2016
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: GE SNMP/Web Interface adapter
Publisher: US-CERT
Operating System: Network Appliance
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Access Privileged Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2016-0862 CVE-2016-0861
Original Bulletin:
https://ics-cert.us-cert.gov/advisories/ICSA-16-033-02
- --------------------------BEGIN INCLUDED TEXT--------------------
Advisory (ICSA-16-033-02)
GE SNMP/Web Interface Vulnerabilities
Original release date: February 02, 2016
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 Karn Ganeshen has identified two vulnerabilities in the
GE SNMP/Web Interface adapter. GE has produced a new firmware version to
mitigate the identified vulnerabilities in later model devices. Earlier model
SNMP/Web Interface adapters may need to be upgraded to accommodate the new
firmware version to address the identified vulnerabilities.
These vulnerabilities could be exploited remotely.
AFFECTED PRODUCTS
The following SNMP/Web Interface adapter versions are affected:
SNMP/Web Interface adapter, firmware versions prior to Version 4.8.
IMPACT
Successful exploitation of these vulnerabilities may allow an attacker to
execute arbitrary system commands and to access other users sensitive account
information potentially impacting the confidentiality, integrity, and
availability of the system.
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
GE is a US-based company that maintains offices in several countries around
the world.
The affected product, SNMP/Web Interface adapter, is a web server designed to
present information about the uninterruptible power supply (UPS). According to
GE, the SNMP/Web Interface is deployed across several sectors including
Critical Manufacturing and Energy. GE estimates that this product is used
worldwide.
VULNERABILITY CHARACTERIZATION
VULNERABILITY OVERVIEW
COMMAND INJECTION [a]
Device does not perform strict input validation, which may allow an
authenticated user to execute any system commands on the system.
CVE-2016-0861 [b] has been assigned to this vulnerability. A CVSS v3 base
score of 8.8 has been assigned; the CVSS vector string is
(AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H). [c]
CLEARTEXT STORAGE OF SENSITIVE INFORMATION [d]
File contains sensitive account information stored in cleartext.
CVE-2016-0862 [e] has been assigned to this vulnerability. A CVSS v3 base
score of 6.5 has been assigned; the CVSS vector string is
(AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N). [f]
VULNERABILITY DETAILS
EXPLOITABILITY
These vulnerabilities could be exploited remotely.
EXISTENCE OF EXPLOIT
No known public exploits specifically target these vulnerabilities.
DIFFICULTY
An attacker with a low skill would be able to exploit these vulnerabilities.
MITIGATION
GE has released a new firmware version for the SNMP/Web Interface adapter,
Version 4.8, which addresses the reported vulnerabilities. Firmware Version
4.8 can be applied to SNMP/Web Interface adapters with the following product
numbers: 1024746, 1024747, 1024748, and 1024921.
GE reports that all other product numbers for SNMP/Web Interface adapters will
need to be upgraded to the latest hardware version with Version 4.8 to address
the identified vulnerabilities. GE recommends that users install the latest
SNMP/Web Interface adapter with firmware Version 4.8. To obtain additional
information about solution options, users can contact GE at the following
email address:
connectivity-ups@ge.com (link sends e-mail)
GEs Product Bulletin is available at the following URL:
http://geindustrial.com/security (link is external)
ICS-CERT recommends that users take defensive measures to minimize the risk of
exploitation of these vulnerabilities. Specifically, users should:
Isolate vulnerable systems from the Internet and untrusted systems.
When remote access is required, use secure methods, such as Virtual Private
Networks (VPNs), recognizing that VPNs may have vulnerabilities and should be
updated to the most current version available. Also recognize that VPN is only
as secure as the connected devices.
Implement a runtime policy to prevent the use of any command that does not
appear in a whitelist of allowable commands.
Minimize network exposure for all control system devices and/or systems, and
ensure that they are not accessible from the Internet.
Locate control system networks and remote devices behind firewalls, and
isolate them from the business network.
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-77: Improper Neutralization of Special Elements used in a Command
('Command Injection'), http://cwe.mitre.org/data/definitions/77.html, web site
last accessed February 2, 2016.
b. NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-0861, 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:N/AC:L/PR:L/UI:N/S...,
web site last accessed February 2, 2016.
d. CWE-312: Cleartext Storage of Sensitive Information,
http://cwe.mitre.org/data/definitions/312.html, web site last accessed
February 2, 2016.
e. NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-0862, NIST
uses this advisory to create the CVE web site report. This web site will be
active sometime after publication of this advisory.
f. CVSS Calculator,
https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S...,
web site last accessed February 2, 2016.
Contact Information
For any questions related to this report, please contact ICS-CERT at:
Email: ics-cert@hq.dhs.gov (link sends e-mail)
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.
- --------------------------END INCLUDED TEXT--------------------
You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.
NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members. As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. 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.
NOTE: This is only the original release of the security bulletin. It may
not be updated when updates to the original are made. If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.
Contact information for the authors of the original document is included
in the Security Bulletin above. If you have any questions or need further
information, please contact them directly.
Previous advisories and external security bulletins can be retrieved from:
http://www.auscert.org.au/render.html?cid=1980
===========================================================================
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.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967
iQIVAwUBVrFymH6ZAP0PgtI9AQIPyg/+OSe+pyfQMKJ9+VOIr2u597pp7iv6MNNE
JIos6dMy8bMckz5GOnGUkbrlnpqqEa6pTnkwFBcxckXxtwOnvQf4lb/fFkoWuzxJ
PrXgrjOct2xqjSntoLrEv55XYwjjlhyZ0OITJn5VN7oZnK5H8iqkBGv/48Otfrlt
rpVn5PJs5FULG3vzMIBGEQJhDeU4+l7uAkkw5BYTCdj7jwsmlKPYBMu6rVxuppgG
elZIalINbxP9j1NjdbSvBzwuZlIPrA3K4PNr3vaz5yYV6t7PWh1uEW9cvEkM7aFa
+96yFI/OTcaZHrmOUKvwRg8MRbjSuksiLBubP6Pm4OEgzdbGqFsszGKqENlG6JqR
4B9mULkKVRUqDkVZ7qWAYQsWSq9sDNY617q9nYs6zsY2gy8z8l07bZKV9MuBF3n5
hw4Fwgl1yJlQFLb+NeCgr3g5EUVg+iYOGBSGCS/tJB+bzEHdyJnCNnbaFXldI7C2
tqEduUT2D0LU+LJwVF3KFN9d/Rl2bp3VbNudNa3cWrWlbeb/r6YjM1igcYM9B+Fr
VcD1JO7Gwc7yICKPnFl3HnoEu1H1JBaRW5BTqQrmUlOsR5Lhx0S7iZxRufZfMuSC
qFAuUS04PDEcdMjfjSe1vdmm9FiLufZWv3aJp8SaPvKV+euCNBHEPL9HVM1YWpNy
PVu0+aorwxA=
=Dfl8
-----END PGP SIGNATURE-----