-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 # SSA-116924: Path Traversal Vulnerability in TIA Portal Publication Date: 2023-04-11 Last Update: 2023-05-09 Current Version: 1.1 CVSS v3.1 Base Score: 7.3 SUMMARY ======= TIA Portal contains a path traversal vulnerability that could allow the creation or overwrite of arbitrary files in the engineering system. If the user is tricked to open a malicious PC system configuration file, an attacker could exploit this vulnerability to achieve arbitrary code execution. Siemens has released an update for TIA Portal V18 and recommends to update to the latest version. Siemens is preparing further updates and recommends specific countermeasures for products where updates are not, or not yet available. AFFECTED PRODUCTS AND SOLUTION ============================== * Totally Integrated Automation Portal (TIA Portal) V15 - Affected versions: All versions - Remediation: Currently no fix is planned See recommendations from section "Workarounds and Mitigations" * Totally Integrated Automation Portal (TIA Portal) V16 - Affected versions: All versions - Remediation: Currently no fix is available See recommendations from section "Workarounds and Mitigations" * Totally Integrated Automation Portal (TIA Portal) V17 - Affected versions: All versions < V17 Update 6 - Remediation: Update to V17 Update 6 or later version See recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/109784441/ * Totally Integrated Automation Portal (TIA Portal) V18 - Affected versions: All versions < V18 Update 1 - Remediation: Update to V18 Update 1 or later version See recommendations from section "Workarounds and Mitigations" - Download: https://support.industry.siemens.com/cs/ww/en/view/109817218/ WORKAROUNDS AND MITIGATIONS =========================== Siemens has identified the following specific workarounds and mitigations that customers can apply to reduce the risk: * Do not open untrusted project files or PC system configuration files 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 =================== Totally Integrated Automation Portal (TIA Portal) is a PC software that provides access to the complete range of Siemens digitalized automation services, from digital planning and integrated engineering to transparent operation. 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-2023-26293 Affected products contain a path traversal vulnerability that could allow the creation or overwrite of arbitrary files in the engineering system. If the user is tricked to open a malicious PC system configuration file, an attacker could exploit this vulnerability to achieve arbitrary code execution. CVSS v3.1 Base Score: 7.3 CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L/E:P/RL:O/RC:C CWE: CWE-20: Improper Input Validation ACKNOWLEDGMENTS =============== Siemens thanks the following party for its efforts: * Michael Heinzl for reporting and coordinated disclosure 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 (2023-04-11): Publication Date V1.1 (2023-05-09): Added fix for Totally Integrated Automation Portal (TIA Portal) V17 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/myPwjH9jB9tDlm7gTEmyujQFAmRZjQAACgkQlm7gTEmy ujR8lQ//dzukRuI4iXW3y1f/KPg6p5oA0ZlQY+07PmUoGrtVDZ3C9XE3r7DVkL8j tUunEDJN1FfiwadX1JTHcHsgQmBPfonkQeURl2B75SsvZSMh2nO2e/vcDwfcGfKD fJofjG6ox7M51QqLE7fEHDXSp3ELFmOw+oHnFYA5qAJkFVwXK4aeOcEw6waF1w0y 4jBsx/ySQ9e+sQeoEp3qZtIenecQS1C3GHYxtI5BJr46Eec57LBnfh21RN8ijV1U kKrsa584t3maGCyo5GGkoZDMUvN+zdf1qH77FF0KjkYu35bLzEVqEnnAlMqj/aZD Z1tQQSOoo/aePfPoJj1Ps3oXNuPim5S965Vnc85vSHZedJtpMnbOBUVwUyWSq/+e CNCf9tMcx2E4Ru6/XBj5crA2np1NUFLJ91EctqGpJ/wmk6Mbvz5RDe1dVm1K3njD tAH/oo2A1dos/U5v4Tfr5CQokQwdJTcCjeOHZk0fST0Btjm+kIfmeH9AX8Dhdnr6 GvO71k/XqeocVD8r9IukHZkEx90BSBAJJg4zrJ+ofEDIG8RZfnrRbsjFtUirnf1l n/K05weaW0fc2CdAXg550/7QlgZqE/TZEjgWFC8o2RIVLpACU+5iaOzJbNRbfqtW djpIOf3O1yPYJD9lpSkKZQSHKbSBlvWDepYgnTUaK77Rc1OKzpM= =NYty -----END PGP SIGNATURE-----