Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2020.3041.2 Advisory (icsa-20-245-01) Mitsubishi Electric Multiple Products 28 January 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Mitsubishi Electric Multiple Products Publisher: ICS-CERT Operating System: Network Appliance Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2020-16226 Original Bulletin: https://us-cert.cisa.gov/ics/advisories/icsa-20-245-01 Revision History: January 28 2021: Vendor updated advisory September 4 2020: Initial Release - --------------------------BEGIN INCLUDED TEXT-------------------- ICS Advisory (ICSA-20-245-01) Mitsubishi Electric Multiple Products (Update A) Original release date: January 26, 2021 Legal Notice All information products included in https://us-cert.cisa.gov/ics 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 https://us-cert.cisa.gov/tlp/ . 1. EXECUTIVE SUMMARY o CVSS v3 7.3 o ATTENTION: Exploitable remotely/low skill level to exploit o Vendor: Mitsubishi Electric o Equipment: Multiple Products o Vulnerability: Predictable Exact Value from Previous Values 2. UPDATE INFORMATION This updated advisory is a follow-up to the original advisory titled ICSA-20-245-01 Mitsubishi Electric Multiple Products that was published September 1, 2020, to the ICS webpage on us-cert.cisa.gov. 3. RISK EVALUATION Successful exploitation of this vulnerability could be used to hijack TCP sessions and allow remote command execution. 4. TECHNICAL DETAILS 4.1 AFFECTED PRODUCTS o QJ71MES96, all versions o QJ71WS96, all versions o Q06CCPU-V, all versions o Q24DHCCPU-V, all versions o Q24DHCCPU-VG, all versions - --------- Begin Update A Part 1 of 7--------- o R12CCPU-V, Version 13 and prior o RD55UP06-V, Version 09 and prior o RD55UP12-V, Version 01 o RJ71GN11-T2, Version 11 and prior - --------- End Update A Part 1 of 7 --------- o RJ71EN71, all versions o QJ71E71-100, all versions o LJ71E71-100, all versions o QJ71MT91, all versions o RD78Gn(n=4,8,16,32,64), all versions o RD78GHV, all versions o RD78GHW, all versions o NZ2GACP620-60, all versions o NZ2GACP620-300, all versions o NZ2FT-MT, all versions o NZ2FT-EIP, all versions o Q03UDECPU, the first 5 digits of serial number 22081 and prior o QnUDEHCPU(n=04/06/10/13/20/26/50/100), the first 5 digits of serial number 22081 and prior o QnUDVCPU(n=03/04/06/13/26), the first 5 digits of serial number 22031 and prior - --------- Begin Update A Part 2 of 7 --------- o QnUDPVCPU(n=04/06/13/26), the first 5 digits of serial number 22031 and prior - --------- End Update A Part 2 of 7 --------- o LnCPU(-P)(n=02/06/26), the first 5 digits of serial number 22051 and prior o L26CPU-(P)BT, the first 5 digits of serial number 22051 and prior o RnCPU(n=00/01/02), Version 18 and prior o RnCPU(n=04/08/16/32/120), Version 50 and prior o RnENCPU(n=04/08/16/32/120), Version 50 and prior - --------- Begin Update A Part 3 of 7 --------- o RnSFCPU (n=08/16/32/120), Version 22 and prior o RnPCPU(n=08/16/32/120), Version 24 and prior o RnPSFCPU(n=08/16/32/120), Version 05 and prior - --------- End Update A Part 3 of 7 --------- o FX5U(C)-**M*/** Case1: Serial number 17X**** or later: Version 1.210 and prior Case2: Serial number 179**** and prior: Version 1.070 and prior o FX5UC-32M*/**-TS, Version 1.210 and prior o FX5UJ-**M*/**, Version 1.000 - --------- Begin Update A Part 4 of 7 --------- o FX5-ENET, Version 1.002 and prior o FX5-ENET/IP, Version 1.22 and prior o FX3U-ENET-ADP, Version 1.002 and prior o FX3GE-**M*/**, the first 3 digits of serial number 20X and prior o FX3U-ENET, Version 1.14 and prior o FX3U-ENET-L, Version 1.14 and prior o FX3U-ENET-P502, Version 1.14 and prior o FX5-CCLGN-MS, Version 1.000 - --------- End Update A Part 4 of 7 --------- o IU1-1M20-D, all versions o LE7-40GU-L, all versions o GOT2000 Series GT21 Model, all versions o GS Series, all versions o GOT1000 Series GT14 Model, all versions o GT25-J71GN13-T2, all versions - --------- Begin Update A Part 5 of 7 --------- o FR-A800-E Series, production date December 2020 and prior o FR-F800-E Series, production date December 2020 and prior - --------- End Update A Part 5 of 7 --------- o FR-A8NCG, Production date August 2020 and prior o FR-E800-EPA Series, Production date July 2020 and prior o FR-E800-EPB Series, Production date July 2020 and prior o Conveyor Tracking Application APR-nTR3FH, APR-nTR6FH, APR-nTR12FH, APR-nTR20FH(n=1,2), all versions (Discontinued product) o MR-JE-C, all versions o MR-J4-TM, all versions 4.2 VULNERABILITY OVERVIEW 4.2.1 PREDICTABLE EXACT VALUE FROM PREVIOUS VALUES CWE-342 The affected products are vulnerable to impersonation of a legitimate device by a malicious actor, which may allow an attacker to remotely execute arbitrary commands. CVE-2020-16226 has been assigned to this vulnerability. A CVSS v3 base score of 7.3 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:N/S:U/ C:L/I:L/A:L ). 4.3 BACKGROUND o CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing o COUNTRIES/AREAS DEPLOYED: Worldwide o COMPANY HEADQUARTERS LOCATION: Japan 4.4 RESEARCHER Ta-Lun Yen of TXOne IoT/ICS Security Research Labs of Trend Micro, working with Trend Micro's Zero Day Initiative, reported this vulnerability to CISA. 5. MITIGATIONS Mitsubishi Electric recommends that users take the following mitigation measures to minimize the risk of exploiting this vulnerability: o Use a firewall or VPN, etc. to prevent unauthorized access when Internet access is required. o Use within a LAN and ensure that they are not accessible from untrusted networks and hosts. o Install an antivirus software in your personal computer that can access the product. - --------- Begin Update A Part 6 of 7 --------- Mitsubishi also recommends users update the following products to their respective versions: o R12CCPU-V, Version 14 or later o RD55UP06-V, Version 10 or later o RD55UP12-V, Version 02 or later o RJ71GN11-T2, Version 12 or later o Q03UDECPU, the first 5 digits of serial number 22082 or later o QnUDEHCPU(n=04/06/10/13/20/26/50/100), the first 5 digits of serial number 22082 or later o QnUDVCPU(n=03/04/06/13/26), the first 5 digits of serial number 22032 or later o QnUDPVCPU(n=04/06/13/26), the first 5 digits of serial number 22032 or later o LnCPU(-P)(n=02/06/26), the first 5 digits of serial number 22052 or later o L26CPU-(P)BT, the first 5 digits of serial number 22052 or later o RnSFCPU (n=08/16/32/120), Version 23 or later o RnPSFCPU(n=08/16/32/120), Version 06 or later o RnPCPU(n=08/16/32/120), Version 25 or later - --------- End Update A Part 6 of 7 --------- o RnCPU(n=00/01/02), Version 18 and prior: Update to Version 19 or later o RnCPU(n=04/08/16/32/120), Version 50 and prior. Please update to Version 51 or later o RnENCPU(n=04/08/16/32/120), Versions 50 and prior: Update to Version 51 or later o FX5U(C)-**M*/** Case1: Serial number 17X**** or later, Version 1.210 and prior: Update to Version 1.211 or later Case2: Serial number 179**** and prior, Version 1.070 and prior: Update to Version 1.071 or later o FX5UC-32M*/**-TS, Version 1.210 and prior: Update to Version 1.211 or later o FX5UJ-**M*/**, Version 1.000: Update to Version 1.001 or later - --------- Begin Update A Part 7 of 7 --------- o FX5-ENET, Version 1.003 or later o FX5-ENET/IP, Version 1.003 or later o FX3U-ENET-ADP, Version 1.24 or later o FX3GE-**M*/**, the first 3 digits of serial number 20Y or later o FX3U-ENET, Version 1.16 or later o FX3U-ENET-L, Version 1.16 or later o FX3U-ENET-P502, Version 1.16 or later o FX5-CCLGN-MS, Version 1.001 or later o FR-A800-E Series, production date January 2021 or later o FR-F800-E Series, production date January 2021 or later o FR-A8NCG, production date September 2020 or later o FR-E800-EPA Series, production date August 2020 or later o FR-E800-EPB Series, production date August 2020 or later - --------- End Update A Part 7 of 7 --------- Please contact Mitsubishi Electric for more information. CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should: o Minimize network exposure for all control system devices and/or systems, and ensure that they are not accessible from the Internet . o Locate control system networks and remote devices behind firewalls, and isolate them from the business network. o 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. CISA also provides a section for control systems security recommended practices on the ICS webpage on us-cert.gov . 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 on the ICS webpage on us-cert.gov in the Technical Information Paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies . Organizations observing any suspected malicious activity should follow their established internal procedures and report their findings to CISA for tracking and correlation against other incidents. No known public exploits specifically target this vulnerability. For any questions related to this report, please contact the CISA at: Email: CISAservicedesk@cisa.dhs.gov Toll Free: 1-888-282-0870 CISA 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: https://www.auscert.org.au/bulletins/ =========================================================================== 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 iQIVAwUBYBJBOONLKJtyKPYoAQjuIw/+Ma/zl73KE+sz0aO+U5M/NbLIa/hGW/50 N1o0SgH2HoWM8V1FJ/UGOq0ViYiJqAjNMYYYazLFKZEdpV7uTfq9sZ32ZhlSQEIj F+7Zselop1nnZp5Yckln6JiRKsV3tvEybEFgiRxQL+cihr5z56FRX3xQooIo1AJW 7VWyleWQdL5I8jzol5ixh8/JZr4KIxhhvlwPToh4K+FuzAz+OTuOn3bhTm7Q9jnN HalgFBsAqt/vdMdzVCdSg0BLp7uRMVJXS5GvCDwQANR/3RAWMQyIaVmQMK1nMPii ijwiJbzo+uW6mpXQMjAimW6SGjxIqBYbF6r1z2R5rRpNnTv27II4AEXJLoqwwldg q4h6YZYp2/tphV0zexf8XKH+mnEqbJ8VBXajRt3pb5o+m5qcgTG0YT6TqKkWiTBH psTR8xklz6n3oLjus7P9/a34Mcrb8jwyGuiHVdQdDRAgKt1K29KPy2pRlDUXwqiA zBZbRZqffcvmf31lmicGDejGt368AnSPaEg8ru2OXOUVYGLI0dhgH1Pv9LD4U136 9jxeXYklwr6RLZPwwSK7q/m6eCsboJrR0XwTUi2BHQKmaKZyFZed6HVoYCbLmlIv wHANmiBbDq3rPpXlEuFuaKGf5uDJqFjIuao/FY9vnRBkKaYKsS2Z4BXDRldo2Flz 1Eo3WEt8Q2M= =z4nr -----END PGP SIGNATURE-----