02 February 2018
Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.0340 Advisory (ICSA-18-032-03) 2 February 2018 =========================================================================== 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 - --------------------------BEGIN INCLUDED TEXT-------------------- 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. - --------------------------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 email@example.com 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: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: firstname.lastname@example.org 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). 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