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AUSCERT External Security Bulletin Redistribution
ESB-2018.0340
Advisory (ICSA-18-032-03)
2 February 2018
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AusCERT Security Bulletin Summary
---------------------------------
Product: Gemalto Sentinel License Manager
Publisher: ICS-CERT
Operating System: Windows
Linux variants
Mac OS
Solaris
HP-UX
AIX
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2017-12822 CVE-2017-12821 CVE-2017-12820
CVE-2017-12818 CVE-2017-11498 CVE-2017-11497
CVE-2017-11496
Reference: ESB-2017.2022
Original Bulletin:
https://ics-cert.us-cert.gov/advisories/ICSA-18-032-03
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Gemalto Sentinel License Manager
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/.
CVSS v3 9.9
ATTENTION: Remotely exploitable/low skill level to exploit.
Vendor: Gemalto
Equipment: Sentinel License Manager
Vulnerability: Null Pointer Dereference, Buffer Overflows, Improper Access
Control
AFFECTED PRODUCTS
The following Sentinel License Manger services are affected:
All HASP SRM, Sentinel HASP, and Sentinel LDK products prior to Sentinel LDK
RTE 7.55
IMPACT
Successful exploitation of these vulnerabilities could lead to remote code
execution or cause a denial-of-service condition, rendering the Sentinel LDK
License Manager service unavailable.
MITIGATION
Gemalto recommends users who have Sentinel LDK run-time environment (RTE)
Version 2.10 through Version 7.54 update to Sentinel LDK RTE component Version
7.6, or the latest version. The update was available as of July 2017 and can be
found at the following location:
https://sentinelcustomer.gemalto.com/sentineldownloads/
For more information about these vulnerabilities, users can contact customer
support at:
https://supportportal.gemalto.com/csm
Or visit the vendor's customer portal at:
http://safenet.gemalto.com/technical-support/security-updates/
http://sentinel.gemalto.com/technical-support/security-updates-sm/
NCCIC recommends users take defensive measures to minimize the risk of
exploitation of these vulnerabilities. Specifically, users should:
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.
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.
NCCIC reminds organizations to perform proper impact analysis and risk
assessment prior to deploying defensive measures.
NCCIC also provides a section for control systems security recommended practices
on the ICS-CERT web page. 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 NCCIC 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.
Organizations observing any suspected malicious activity should follow their
established internal procedures and report their findings to NCCIC for tracking
and correlation against other incidents.
In addition, NCCIC recommends that users take the following measures to protect
themselves from social engineering attacks:
Do not click web links or open unsolicited attachments in email messages.
Refer to Recognizing and Avoiding Email Scams for more information on
avoiding email scams.
Refer to Avoiding Social Engineering and Phishing Attacks for more
information on social engineering attacks.
No known public exploits specifically target these vulnerabilities.
VULNERABILITY OVERVIEW
NULL POINTER DEREFERENCE CWE-476
Language packs (zip files) with invalid HTML files lead to NULL pointer
dereferences, which could be exploited by an attacker leveraging malicious HTML
files. This could lead to a denial-of-service condition.
CVE-2017-11498 has been assigned to this vulnerability. A CVSS v3 base score of
7.5 has been assigned; the CVSS vector string is
(AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
STACK-BASED BUFFER OVERFLOW CWE-121
Language packs containing file names longer than 1,024 characters and malformed
ASN.1 streams in input files can lead to a stack-based buffer overflow. This may
allow remote code execution.
CVE-2017-11497 has been assigned to this vulnerability. A CVSS v3 base score of
9.8 has been assigned; the CVSS vector string is
(AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
STACK-BASED BUFFER OVERFLOW CWE-121
Malformed ASN.1 streams in V2C and similar input files can be used to generate
stack-based buffer overflows. This could allow remote code execution.
CVE-2017-11496 has been assigned to this vulnerability. A CVSS v3 base score of
9.8 has been assigned; the CVSS vector string is
(AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
STACK-BASED BUFFER OVERFLOW CWE-121
XML payload with more than supported number of elements leads to buffer overflow
of a variable in stack. This vulnerability can be exploited for denial of
service.
CVE-2017-12818 has been assigned to this vulnerability. A CVSS v3 base score of
7.5 has been assigned; the CVSS vector string is
(AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
STACK-BASED BUFFER OVERFLOW CWE-121
XML payload with more than supported number of elements leads to buffer overflow
of a variable in stack. This vulnerability can be exploited for denial of
service or arbitrary code execution.
CVE-2017-12821 has been assigned to this vulnerability. A CVSS v3 base score of
9.8 has been assigned; the CVSS vector string is
(AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
HEAP-BASED BUFFER OVERFLOW CWE-122
Malformed HTTP request body in Admin APIs can be used to generate heap buffer
overflows. This vulnerability can be exploited for denial of service.
CVE-2017-12820 has been assigned to this vulnerability. A CVSS v3 base score of
7.5 has been assigned; the CVSS vector string is
(AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
IMPROPER ACCESS CONTROL CWE-284
License manager web interface is enabled as a default configuration, and even if
disabled, it can be re-enabled remotely. This vulnerability can be exploited to
perform above mentioned attacks remotely.
CVE-2017-12822 has been assigned to this vulnerability. A CVSS v3 base score of
9.9 has been assigned; the CVSS vector string is
(AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:L).
RESEARCHER
Kaspersky Labs reported these vulnerabilities to Gemalto CERT and NCCIC.
BACKGROUND
Critical Infrastructure Sectors: Communications, Financial Services, Government
Facilities, Healthcare and Public Health, Information Technology
Countries/Areas Deployed: Worldwide
Company Headquarters Location: Netherlands
Contact Information
For any questions related to this report, please contact the NCCIC at:
Email: NCCICCUSTOMERSERVICE@hq.dhs.gov
Toll Free: 1-888-282-0870
For industrial control systems cybersecurity information:
http://ics-cert.us-cert.gov
or incident reporting: https://ics-cert.us-cert.gov/Report-Incident?
The NCCIC 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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