-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 # SSA-617755: Denial of Service Vulnerability in the SNMP Agent of SCALANCE X-200IRT Products Publication Date: 2023-02-14 Last Update: 2023-02-14 Current Version: 1.0 CVSS v3.1 Base Score: 7.5 SUMMARY ======= Products of the SCALANCE X-200IRT switch family are affected by a denial of service vulnerability in the SNMP agent that could allow remote attackers to cause a denial of service condition. Siemens has released updates for the affected products and recommends to update to the latest versions. AFFECTED PRODUCTS AND SOLUTION ============================== * SCALANCE X200-4P IRT (6GK5200-4AH00-2BA3) - Affected versions: All versions < V5.5.0 - Remediation: Update to V5.5.0 or later version See further recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/109792534/ * SCALANCE X201-3P IRT (6GK5201-3BH00-2BA3) - Affected versions: All versions < V5.5.0 - Remediation: Update to V5.5.0 or later version See further recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/109792534/ * SCALANCE X201-3P IRT PRO (6GK5201-3JR00-2BA6) - Affected versions: All versions < V5.5.0 - Remediation: Update to V5.5.0 or later version See further recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/109792534/ * SCALANCE X202-2IRT (6GK5202-2BB00-2BA3) - Affected versions: All versions < V5.5.0 - Remediation: Update to V5.5.0 or later version See further recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/109792534/ * SCALANCE X202-2P IRT (6GK5202-2BH00-2BA3) - Affected versions: All versions < V5.5.0 - Remediation: Update to V5.5.0 or later version See further recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/109792534/ * SCALANCE X202-2P IRT PRO (6GK5202-2JR00-2BA6) - Affected versions: All versions < V5.5.0 - Remediation: Update to V5.5.0 or later version See further recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/109792534/ * SCALANCE X204IRT (6GK5204-0BA00-2BA3) - Affected versions: All versions < V5.5.0 - Remediation: Update to V5.5.0 or later version See further recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/109792534/ * SCALANCE X204IRT PRO (6GK5204-0JA00-2BA6) - Affected versions: All versions < V5.5.0 - Remediation: Update to V5.5.0 or later version See further recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/109792534/ * SCALANCE XF201-3P IRT (6GK5201-3BH00-2BD2) - Affected versions: All versions < V5.5.0 - Remediation: Update to V5.5.0 or later version See further recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/109792534/ * SCALANCE XF202-2P IRT (6GK5202-2BH00-2BD2) - Affected versions: All versions < V5.5.0 - Remediation: Update to V5.5.0 or later version See further recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/109792534/ * SCALANCE XF204-2BA IRT (6GK5204-2AA00-2BD2) - Affected versions: All versions < V5.5.0 - Remediation: Update to V5.5.0 or later version See further recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/109792534/ * SCALANCE XF204IRT (6GK5204-0BA00-2BF2) - Affected versions: All versions < V5.5.0 - Remediation: Update to V5.5.0 or later version See further recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/109792534/ * SIPLUS NET SCALANCE X202-2P IRT (6AG1202-2BH00-2BA3) - Affected versions: All versions < V5.5.0 - Remediation: Update to V5.5.0 or later version See further recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/109792534/ WORKAROUNDS AND MITIGATIONS =========================== Siemens has identified the following specific workarounds and mitigations that customers can apply to reduce the risk: * Disable the SNMP service if possible and supported by the product Product-specific remediations or mitigations can be found in the section "Affected Products and Solution". Please follow the "General Security Recommendations". GENERAL SECURITY RECOMMENDATIONS ================================ As a general security measure, Siemens strongly recommends to protect network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends to configure the environment according to Siemens' operational guidelines for Industrial Security (Download: https://www.siemens.com/cert/operational-guidelines-industrial- security), and to follow the recommendations in the product manuals. Additional information on Industrial Security by Siemens can be found at: https://www.siemens.com/industrialsecurity PRODUCT DESCRIPTION =================== SCALANCE X switches are used to connect industrial components like Programmable Logic Controllers (PLCs) or Human Machine Interfaces (HMIs). SIPLUS extreme products are designed for reliable operation under extreme conditions and are based on SIMATIC, LOGO!, SITOP, SINAMICS, SIMOTION, SCALANCE or other devices. SIPLUS devices use the same firmware as the product they are based on. VULNERABILITY CLASSIFICATION ============================ The vulnerability classification has been performed by using the CVSS scoring system in version 3.1 (CVSS v3.1) (https://www.first.org/cvss/). The CVSS environmental score is specific to the customer's environment and will impact the overall CVSS score. The environmental score should therefore be individually defined by the customer to accomplish final scoring. An additional classification has been performed using the CWE classification, a community-developed list of common software security weaknesses. This serves as a common language and as a baseline for weakness identification, mitigation, and prevention efforts. A detailed list of CWE classes can be found at: https://cwe.mitre.org/. * Vulnerability CVE-2007-5846 The SNMP agent (snmp_agent.c) in net-snmp before 5.4.1 allows remote attackers to cause a denial of service (CPU and memory consumption) via a GETBULK request with a large max-repeaters value. CVSS v3.1 Base Score: 7.5 CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C CWE: CWE-20: Improper Input Validation ADDITIONAL INFORMATION ====================== For further inquiries on security vulnerabilities in Siemens products and solutions, please contact the Siemens ProductCERT: https://www.siemens.com/cert/advisories HISTORY DATA ============ V1.0 (2023-02-14): Publication Date TERMS OF USE ============ Siemens Security Advisories are subject to the terms and conditions contained in Siemens' underlying license terms or other applicable agreements previously agreed to with Siemens (hereinafter "License Terms"). To the extent applicable to information, software or documentation made available in or through a Siemens Security Advisory, the Terms of Use of Siemens' Global Website (https://www.siemens.com/terms_of_use, hereinafter "Terms of Use"), in particular Sections 8-10 of the Terms of Use, shall apply additionally. In case of conflicts, the License Terms shall prevail over the Terms of Use. Copyright: Siemens 2023 -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEHyx/myPwjH9jB9tDlm7gTEmyujQFAmPqzwAACgkQlm7gTEmy ujRoZg//YrYwRYmKfUWeo/3MZ2x7Sc9chj3yqf+bfRZjKsRmCe43d7HEiMrT7aKz /MZa7bBIlkw8Qa2rYRQhIV9vPWLPZ16ra0gMa8UHAxn/qZ5+BDKfgKKPxrslRqu/ b5E/1r74cnjffrT9IErXIL5lxFzYU2HEJ3+IMYdmiPfZ2mYgOSz74N27NYJTg+Uu /KFLI1F5chPPleozXK9kxQbCxc9axT6aszgxqGMv7ZFWnXXbRaX2Kg7uO4YzYElI vhDYks1xCIRCOwCHpbW/hbu06Chm6PbejDNG/MRemCuBsvWx1l/aB+934+GW9Arx uiSfMn8ljP09CPLhV3S2u96L5l2WCJUGTOlz4y6OmwAW6KazE2pZ28QcD9sbMOD4 X6QhjJ3dLMSaOzxjStTz3k45rFX9GMvkQgLdo2/aZbqIpjiJrxATgWLJkU7nExRg LdXbubYCTvlialvehNU/ZtvVq9tF5cqbd0qGZOKvFGuA/LIPSzX4BFna+JjV4a0l gXZDUGxw0kA0h9JoLg040SV1KCCtgnDJYOBhGZYNVR0B6x+BoO8U7zi1NdiB/aHa xZ1Y3ehdULe0JCjaxkay4H4E5slMzEQR73UYT/17/YUI7N+EZvHmcgfnw4XlYmVB 2K2z4kpdd6b0YR7N0M4y6Bf0yVW0szYUkRtB1VmTDbokUT5KCnk= =BtHx -----END PGP SIGNATURE-----