ICS Advisory (ICSA-22-286-11)

Siemens SCALANCE and RUGGEDCOM Products (Update B)

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As of January 10, 2023, CISA will no longer be updating ICS security advisories for Siemens product vulnerabilities beyond the initial advisory. For the most up-to-date information on vulnerabilities in this advisory, please see Siemens' ProductCERT Security Advisories (CERT Services | Services | Siemens Global).

1. EXECUTIVE SUMMARY

  • CVSS v3 8.8
  • ATTENTION: Exploitable remotely/low attack complexity
  • Vendor: Siemens
  • Equipment: Multiple SCALANCE and RUGGEDCOM products
  • Vulnerability: Missing Authorization

2. UPDATE INFORMATION

This updated advisory is a follow-up to the original advisory titled ICSA-22-286-11 Siemens SCALANCE and RUGGEDCOM Products (Update A) that was published November 10th, 2022 on the ICS webpage on cisa.gov/ICS.

3. RISK EVALUATION

Successful exploitation of this vulnerability could allow low privileged attackers to escalate privileges.

4. TECHNICAL DETAILS

4.1 AFFECTED PRODUCTS

The following types and versions of SCALANCE and RUGGEDCOM devices are affected:

  • RUGGEDCOM RM1224 LTE(4G) EU (6GK6108- 4AM00-2BA2): All versions prior to V7.1.2
  • RUGGEDCOM RM1224 LTE(4G) NAM (6GK6108-4AM00-2DA2): All versions prior to V7.1.2
  • SCALANCE M804PB (6GK5804-0AP00-2AA2): All versions prior to V7.1.2
  • SCALANCE M812-1 ADSL-Router (Annex A) (6GK5812-1AA00-2AA2): All versions prior to V7.1.2
  • SCALANCE M812-1 ADSL-Router (Annex B) (6GK5812-1BA00-2AA2): All versions prior to V7.1.2
  • SCALANCE M816-1 ADSL-Router (Annex A) (6GK5816-1AA00-2AA2): All versions prior to V7.1.2
  • SCALANCE M816-1 ADSL-Router (Annex B) (6GK5816-1BA00-2AA2): All versions prior to V7.1.2
  • SCALANCE M826-2 SHDSL-Router (6GK5826- 2AB00-2AB2): All versions prior to V7.1.2
  • SCALANCE M874-2 (6GK5874-2AA00-2AA2): All versions prior to V7.1.2
  • SCALANCE M874-3 (6GK5874-3AA00-2AA2): All versions prior to V7.1.2
  • SCALANCE M876-3 (EVDO) (6GK5876-3AA02- 2BA2): All versions prior to V7.1.2
  • SCALANCE M876-3 (ROK) (6GK5876-3AA02- 2EA2): All versions prior to V7.1.2
  • SCALANCE M876-4 (EU) (6GK5876-4AA00- 2BA2): All versions prior to V7.1.2
  • SCALANCE M876-4 (NAM) (6GK5876-4AA00- 2DA2): All versions prior to V7.1.2
  • SCALANCE MUM853-1 (EU) (6GK5853-2EA00- 2DA1): All versions prior to V7.1.2
  • SCALANCE MUM856-1 (EU) (6GK5856-2EA00- 3DA1): All versions prior to V7.1.2
  • SCALANCE MUM856-1 (RoW) (6GK5856- 2EA00-3AA1): All versions prior to V7.1.2
  • SCALANCE S615 (6GK5615-0AA00-2AA2): All versions prior to V7.1.2

--------- Begin Update B part 1 of 1 ---------

  • SCALANCE SC622-2C (6GK5622-2GS00- 2AC2): All versions prior to V3.0
  • SCALANCE SC632-2C (6GK5632-2GS00- 2AC2): All versions prior to V3.0
  • SCALANCE SC636-2C (6GK5636-2GS00- 2AC2): All versions prior to V3.0
  • SCALANCE SC642-2C (6GK5642-2GS00- 2AC2): All versions prior to V3.0
  • SCALANCE SC646-2C (6GK5646-2GS00- 2AC2): All versions prior to V3.0

--------- End Update B part 1 of 1 ---------

  • SCALANCE SC622-2C (6GK5622-2GS00- 2AC2): All versions

  • SCALANCE SC632-2C (6GK5632-2GS00- 2AC2): All versions
  • SCALANCE SC636-2C (6GK5636-2GS00- 2AC2): All versions
  • SCALANCE SC642-2C (6GK5642-2GS00- 2AC2): All versions
  • SCALANCE SC646-2C (6GK5646-2GS00- 2AC2): All versions
  • SCALANCE W721-1 RJ45 (6GK5721-1FC00- 0AA0): All versions
  • SCALANCE W721-1 RJ45 (6GK5721-1FC00- 0AB0): All versions
  • SCALANCE W722-1 RJ45 (6GK5722-1FC00- 0AA0): All versions
  • SCALANCE W722-1 RJ45 (6GK5722-1FC00- 0AB0): All versions
  • SCALANCE W722-1 RJ45 (6GK5722-1FC00- 0AC0): All versions
  • SCALANCE W734-1 RJ45 (6GK5734-1FX00- 0AA0): All versions
  • SCALANCE W734-1 RJ45 (6GK5734-1FX00- 0AA6): All versions
  • SCALANCE W734-1 RJ45 (6GK5734-1FX00- 0AB0): All versions
  • SCALANCE W734-1 RJ45 (USA) (6GK5734- 1FX00-0AB6): All versions
  • SCALANCE W738-1 M12 (6GK5738-1GY00- 0AA0): All versions
  • SCALANCE W738-1 M12 (6GK5738-1GY00- 0AB0): All versions
  • SCALANCE W748-1 M12 (6GK5748-1GD00- 0AA0): All versions
  • SCALANCE W748-1 M12 (6GK5748-1GD00- 0AB0): All versions
  • SCALANCE W748-1 RJ45 (6GK5748-1FC00- 0AA0): All versions
  • SCALANCE W748-1 RJ45 (6GK5748-1FC00- 0AB0): All versions
  • SCALANCE W761-1 RJ45 (6GK5761-1FC00- 0AA0): All versions
  • SCALANCE W761-1 RJ45 (6GK5761-1FC00- 0AB0): All versions
  • SCALANCE W774-1 M12 EEC (6GK5774-1FY00- 0TA0): All versions
  • SCALANCE W774-1 M12 EEC (6GK5774-1FY00- 0TB0): All versions
  • SCALANCE W774-1 RJ45 (6GK5774-1FX00- 0AA0): All versions
  • SCALANCE W774-1 RJ45 (6GK5774-1FX00- 0AA6): All versions
  • SCALANCE W774-1 RJ45 (6GK5774-1FX00- 0AB0): All versions
  • SCALANCE W774-1 RJ45 (6GK5774-1FX00- 0AC0): All versions
  • SCALANCE W774-1 RJ45 (USA) (6GK5774- 1FX00-0AB6): All versions
  • SCALANCE W778-1 M12 (6GK5778-1GY00- 0AA0): All versions
  • SCALANCE W778-1 M12 (6GK5778-1GY00- 0AB0): All versions
  • SCALANCE W778-1 M12 EEC (6GK5778- 1GY00-0TA0): All versions
  • SCALANCE W778-1 M12 EEC (USA) (6GK5778- 1GY00-0TB0): All versions
  • SCALANCE W786-1 RJ45 (6GK5786-1FC00- 0AA0): All versions
  • SCALANCE W786-1 RJ45 (6GK5786-1FC00- 0AB0): All versions
  • SCALANCE W786-2 RJ45 (6GK5786-2FC00- 0AA0): All versions
  • SCALANCE W786-2 RJ45 (6GK5786-2FC00- 0AB0): All versions
  • SCALANCE W786-2 RJ45 (6GK5786-2FC00- 0AC0): All versions
  • SCALANCE W786-2 SFP (6GK5786-2FE00- 0AA0): All versions
  • SCALANCE W786-2 SFP (6GK5786-2FE00- 0AB0): All versions
  • SCALANCE W786-2IA RJ45 (6GK5786-2HC00- 0AA0): All versions
  • SCALANCE W786-2IA RJ45 (6GK5786-2HC00- 0AB0): All versions
  • SCALANCE W788-1 M12 (6GK5788-1GD00- 0AA0): All versions
  • SCALANCE W788-1 M12 (6GK5788-1GD00- 0AB0): All versions
  • SCALANCE W788-1 RJ45 (6GK5788-1FC00- 0AA0): All versions
  • SCALANCE W788-1 RJ45 (6GK5788-1FC00- 0AB0): All versions
  • SCALANCE W788-2 M12 (6GK5788-2GD00- 0AA0): All versions
  • SCALANCE W788-2 M12 (6GK5788-2GD00- 0AB0): All versions
  • SCALANCE W788-2 M12 EEC (6GK5788- 2GD00-0TA0): All versions
  • SCALANCE W788-2 M12 EEC (6GK5788- 2GD00-0TB0): All versions
  • SCALANCE W788-2 M12 EEC (6GK5788- 2GD00-0TC0): All versions
  • SCALANCE W788-2 RJ45 (6GK5788-2FC00- 0AA0): All versions
  • SCALANCE W788-2 RJ45 (6GK5788-2FC00- 0AB0): All versions
  • SCALANCE W788-2 RJ45 (6GK5788-2FC00- 0AC0): All versions
  • SCALANCE W1748-1 M12 (6GK5748-1GY01- 0AA0): All versions
  • SCALANCE W1748-1 M12 (6GK5748-1GY01- 0TA0): All versions
  • SCALANCE W1788-1 M12 (6GK5788-1GY01- 0AA0): All versions
  • SCALANCE W1788-2 EEC M12 (6GK5788- 2GY01-0TA0): All versions
  • SCALANCE W1788-2 M12 (6GK5788-2GY01- 0AA0): All versions
  • SCALANCE W1788-2IA M12 (6GK5788-2HY01- 0AA0): All versions
  • SCALANCE WAM763-1 (6GK5763-1AL00- 7DA0): All versions
  • SCALANCE WAM766-1 (6GK5766-1GE00- 7DA0): All versions
  • SCALANCE WAM766-1 (6GK5766-1GE00- 7DB0): All versions
  • SCALANCE WAM766-1 6GHz (6GK5766-1JE00- 7DA0): All versions
  • SCALANCE WAM766-1 EEC (6GK5766-1GE00- 7TA0): All versions
  • SCALANCE WAM766-1 EEC (6GK5766-1GE00- 7TB0): All versions
  • SCALANCE WAM766-1 EEC 6GHz (6GK5766- 1JE00-7TA0): All versions
  • SCALANCE WUM763-1 (6GK5763-1AL00- 3AA0): All versions
  • SCALANCE WUM763-1 (6GK5763-1AL00- 3DA0): All versions
  • SCALANCE WUM766-1 (6GK5766-1GE00- 3DA0): All versions
  • SCALANCE WUM766-1 (6GK5766-1GE00- 3DB0): All versions
  • SCALANCE WUM766-1 6GHz (6GK5766-1JE00- 3DA0): All versions
  • SCALANCE XB205-3 (SC, PN) (6GK5205- 3BB00-2AB2): All versions
  • SCALANCE XB205-3 (ST, E/IP) (6GK5205- 3BB00-2TB2): All versions
  • SCALANCE XB205-3 (ST, E/IP) (6GK5205- 3BD00-2TB2): All versions
  • SCALANCE XB205-3 (ST, PN) (6GK5205-3BD00- 2AB2): All versions
  • SCALANCE XB205-3LD (SC, E/IP) (6GK5205- 3BF00-2TB2): All versions
  • SCALANCE XB205-3LD (SC, PN) (6GK5205- 3BF00-2AB2): All versions
  • SCALANCE XB208 (E/IP) (6GK5208-0BA00- 2TB2): All versions
  • SCALANCE XB208 (PN) (6GK5208-0BA00- 2AB2): All versions
  • SCALANCE XB213-3 (SC, E/IP) (6GK5213- 3BD00-2TB2): All versions
  • SCALANCE XB213-3 (SC, PN) (6GK5213- 3BD00-2AB2): All versions
  • SCALANCE XB213-3 (ST, E/IP) (6GK5213- 3BB00-2TB2): All versions
  • SCALANCE XB213-3 (ST, PN) (6GK5213-3BB00- 2AB2): All versions
  • SCALANCE XB213-3LD (SC, E/IP) (6GK5213- 3BF00-2TB2): All versions
  • SCALANCE XB213-3LD (SC, PN) (6GK5213- 3BF00-2AB2): All versions
  • SCALANCE XB216 (E/IP) (6GK5216-0BA00- 2TB2): All versions
  • SCALANCE XB216 (PN) (6GK5216-0BA00- 2AB2): All versions
  • SCALANCE XC206-2 (SC) (6GK5206-2BD00- 2AC2): All versions
  • SCALANCE XC206-2 (ST/BFOC) (6GK5206- 2BB00-2AC2): All versions
  • SCALANCE XC206-2G PoE (6GK5206-2RS00- 2AC2): All versions
  • SCALANCE XC206-2G PoE (54 V DC) (6GK5206-2RS00-5AC2): All versions
  • SCALANCE XC206-2G PoE EEC (54 V DC) (6GK5206-2RS00-5FC2): All versions
  • SCALANCE XC206-2SFP (6GK5206-2BS00- 2AC2): All versions
  • SCALANCE XC206-2SFP EEC (6GK5206- 2BS00-2FC2): All versions
  • SCALANCE XC206-2SFP G (6GK5206-2GS00- 2AC2): All versions
  • SCALANCE XC206-2SFP G (EIP DEF.) (6GK5206-2GS00-2TC2): All versions
  • SCALANCE XC206-2SFP G EEC (6GK5206- 2GS00-2FC2): All versions
  • SCALANCE XC208 (6GK5208-0BA00-2AC2): All versions
  • SCALANCE XC208EEC (6GK5208-0BA00- 2FC2): All versions
  • SCALANCE XC208G (6GK5208-0GA00-2AC2): All versions
  • SCALANCE XC208G (EIP def.) (6GK5208- 0GA00-2TC2): All versions
  • SCALANCE XC208G EEC (6GK5208-0GA00- 2FC2): All versions
  • SCALANCE XC208G PoE (6GK5208-0RA00- 2AC2): All versions
  • SCALANCE XC208G PoE (54 V DC) (6GK5208- 0RA00-5AC2): All versions
  • SCALANCE XC216 (6GK5216-0BA00-2AC2): All versions
  • SCALANCE XC216-3G PoE (6GK5216-3RS00- 2AC2): All versions
  • SCALANCE XC216-3G PoE (54 V DC) (6GK5216-3RS00-5AC2): All versions
  • SCALANCE XC216-4C (6GK5216-4BS00- 2AC2): All versions
  • SCALANCE XC216-4C G (6GK5216-4GS00- 2AC2): All versions
  • SCALANCE XC216-4C G (EIP Def.) (6GK5216- 4GS00-2TC2): All versions
  • SCALANCE XC216-4C G EEC (6GK5216- 4GS00-2FC2): All versions
  • SCALANCE XC216EEC (6GK5216-0BA00- 2FC2): All versions
  • SCALANCE XC224 (6GK5224-0BA00-2AC2): All versions
  • SCALANCE XC224-4C G (6GK5224-4GS00- 2AC2): All versions
  • SCALANCE XC224-4C G (EIP Def.) (6GK5224- 4GS00-2TC2): All versions
  • SCALANCE XC224-4C G EEC (6GK5224- 4GS00-2FC2): All versions
  • SCALANCE XF204 (6GK5204-0BA00-2GF2): All versions
  • SCALANCE XF204 DNA (6GK5204-0BA00- 2YF2): All versions
  • SCALANCE XF204-2BA (6GK5204-2AA00- 2GF2): All versions
  • SCALANCE XF204-2BA DNA (6GK5204-2AA00- 2YF2): All versions
  • SCALANCE XM408-4C (6GK5408-4GP00- 2AM2): All versions
  • SCALANCE XM408-4C (L3 int.) (6GK5408- 4GQ00-2AM2): All versions
  • SCALANCE XM408-8C (6GK5408-8GS00- 2AM2): All versions
  • SCALANCE XM408-8C (L3 int.) (6GK5408- 8GR00-2AM2): All versions
  • SCALANCE XM416-4C (6GK5416-4GS00- 2AM2): All versions
  • SCALANCE XM416-4C (L3 int.) (6GK5416- 4GR00-2AM2): All versions
  • SCALANCE XP208 (6GK5208-0HA00-2AS6): All versions
  • SCALANCE XP208 (Ethernet/IP) (6GK5208- 0HA00-2TS6): All versions
  • SCALANCE XP208EEC (6GK5208-0HA00- 2ES6): All versions
  • SCALANCE XP208PoE EEC (6GK5208-0UA00- 5ES6): All versions
  • SCALANCE XP216 (6GK5216-0HA00-2AS6): All versions
  • SCALANCE XP216 (Ethernet/IP) (6GK5216- 0HA00-2TS6): All versions
  • SCALANCE XP216EEC (6GK5216-0HA00- 2ES6): All versions
  • SCALANCE XP216POE EEC (6GK5216-0UA00- 5ES6): All versions
  • SCALANCE XR324WG (24 x FE, AC 230V) (6GK5324-0BA00-3AR3): All versions
  • SCALANCE XR324WG (24 X FE, DC 24V) (6GK5324-0BA00-2AR3): All versions
  • SCALANCE XR326-2C PoE WG (6GK5326- 2QS00-3AR3): All versions
  • SCALANCE XR326-2C PoE WG (without UL) (6GK5326-2QS00-3RR3): All versions
  • SCALANCE XR328-4C WG (24xFE,4xGE, AC230V) (6GK5328-4FS00- 3AR3): All versions
  • SCALANCE XR328-4C WG (24xFE,4xGE, AC230V) (6GK5328-4FS00- 3RR3): All versions
  • SCALANCE XR328-4C WG (24XFE, 4XGE, 24V) (6GK5328-4FS00-2AR3): All versions
  • SCALANCE XR328-4C WG (24xFE, 4xGE, DC24V) (6GK5328-4FS00-2RR3): All versions
  • SCALANCE XR328-4C WG (28xGE, AC 230V) (6GK5328-4SS00-3AR3): All versions
  • SCALANCE XR328-4C WG (28xGE, DC 24V) (6GK5328-4SS00-2AR3): All versions
  • SCALANCE XR524-8C, 1x230V (6GK5524- 8GS00-3AR2): All versions
  • SCALANCE XR524-8C, 1x230V (L3 int.) (6GK5524-8GR00-3AR2): All versions
  • SCALANCE XR524-8C, 2x230V (6GK5524- 8GS00-4AR2): All versions
  • SCALANCE XR524-8C, 2x230V (L3 int.) (6GK5524-8GR00-4AR2): All versions
  • SCALANCE XR524-8C, 24V (6GK5524-8GS00- 2AR2): All versions
  • SCALANCE XR524-8C, 24V (L3 int.) (6GK5524- 8GR00-2AR2): All versions
  • SCALANCE XR526-8C, 1x230V (6GK5526- 8GS00-3AR2): All versions
  • SCALANCE XR526-8C, 1x230V (L3 int.) (6GK5526-8GR00-3AR2): All versions
  • SCALANCE XR526-8C, 1x230V (L3 int.) (6GK5526-8GR00-3AR2): All versions
  • SCALANCE XR526-8C, 2x230V (L3 int.) (6GK5526-8GR00-4AR2): All versions
  • SCALANCE XR526-8C, 24V (6GK5526-8GS00- 2AR2): All versions
  • SCALANCE XR526-8C, 24V (L3 int.) (6GK5526- 8GR00-2AR2): All versions
  • SCALANCE XR528-6M (6GK5528-0AA00- 2AR2): All versions
  • SCALANCE XR528-6M (2HR2) (6GK5528- 0AA00-2HR2): All versions
  • SCALANCE XR528-6M (2HR2, L3 int.) (6GK5528-0AR00-2HR2): All versions
  • SCALANCE XR528-6M (L3 int.) (6GK5528- 0AR00-2AR2): All versions
  • SCALANCE XR552-12M (6GK5552-0AA00- 2AR2): All versions
  • SCALANCE XR552-12M (2HR2) (6GK5552- 0AA00-2HR2): All versions
  • SCALANCE XR552-12M (2HR2) (6GK5552- 0AR00-2HR2): All versions
  • SCALANCE XR552-12M (2HR2, L3 int.) (6GK5552-0AR00-2AR2): All versions
  • SIPLUS NET SCALANCE XC206-2 (6AG1206- 2BB00-7AC2): All versions
  • SIPLUS NET SCALANCE XC206-2SFP (6AG1206-2BS00-7AC2): All versions
  • SIPLUS NET SCALANCE XC208 (6AG1208- 0BA00-7AC2): All versions
  • SIPLUS NET SCALANCE XC216-4C (6AG1216- 4BS00-7AC2): All versions

4.2 VULNERABILITY OVERVIEW

4.2.1    MISSING AUTHORIZATION CWE-862

Affected Siemens SCALANCE and RUGGEDCOM devices of versions prior to V7.1.2 do not properly authorize the change password function of the web interface. This could allow low privileged users to escalate their privileges.

CVE-2022-31765 has been assigned to this vulnerability. A CVSS v3 base score of 8.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

4.3 BACKGROUND

  • CRITICAL INFRASTRUCTURE SECTORS: Multiple
  • COUNTRIES/AREAS DEPLOYED: Worldwide
  • COMPANY HEADQUARTERS LOCATION: Germany

4.4 RESEARCHER

Martin Grubhofer and Michael Messner from Siemens Energy reported these vulnerabilities to Siemens.

5. MITIGATIONS

Siemens recommends users apply the following mitigations:

  • Update affected devices to the latest versions. Siemens’ security advisory, SSA-552702, demonstrates which devices have updates available
  • Use access control lists (ACLs) to restrict access to the device web server
  • Restrict access to the device web server ports (default 443/TCP or 80/TCP) to trusted networks and client IP addresses

As a general security measure, Siemens recommends protecting network access to devices with appropriate mechanisms. To operate the devices in a protected IT environment, Siemens recommends configuring the environment according to Siemens’ operational guidelines for industrial security and following recommendations in the product manuals.

Additional information on industrial security by Siemens can be found on the Siemens industrial security webpage.

For more information, see SSA-552702 in HTML or CSAF formats.

CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability these vulnerabilities. Specifically, users should:

  • Minimize network exposure for all control system devices and/or systems, and ensure they are not accessible from the Internet.
  • Locate control system networks and remote devices behind firewalls and isolate them from business networks.
  • When remote access is required, use secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as its connected devices.

CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.

CISA also provides a section for control systems security recommended practices on the ICS webpage at cisa.gov/ics. Several CISA products detailing cyber defense best 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 at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies.

Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.

No known public exploits specifically target this vulnerability.


Contact Information

For any questions related to this report, please contact the CISA at:

Email: CISAservicedesk@cisa.dhs.gov
Toll Free: 1-888-282-0870

For industrial control systems cybersecurity information:  https://us-cert.cisa.gov/ics 
or incident reporting:  https://us-cert.cisa.gov/report

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