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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2022.4070 Advisory (icsa-22-228-04) Softing Secure Integration Server 17 August 2022 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Softing Secure Integration Server Publisher: ICS-CERT Operating System: Network Appliance Windows Resolution: Patch/Upgrade CVE Names: CVE-2022-2547 CVE-2022-2338 CVE-2022-2337 CVE-2022-2336 CVE-2022-2335 CVE-2022-2334 CVE-2022-1748 CVE-2022-1373 CVE-2022-1069 Original Bulletin: https://us-cert.cisa.gov/ics/advisories/icsa-22-228-04 Comment: CVSS (Max): 9.8 CVE-2022-2336 (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) CVSS Source: ICS-CERT Calculator: https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - --------------------------BEGIN INCLUDED TEXT-------------------- ICS Advisory (ICSA-22-228-04) Softing Secure Integration Server Original release date: August 16, 2022 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 7.5 o ATTENTION: Exploitable remotely/low attack complexity o Vendor: Softing o Equipment: Secure Integration Server o Vulnerabilities: Out-of-bounds Read, Uncontrolled Search Path Element, Improper Authentication, Relative Path Traversal, Cleartext Transmission of Sensitive Information, NULL Pointer Dereference, Integer Underflow. 2. RISK EVALUATION Successful exploitation of these vulnerabilities could allow an attacker to cause a denial-of-service condition. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS o Softing reports these vulnerabilities affect the following products: o Secure Integration Server: Version 1.22. o edgeConnector: Version 3.1. o edgeAggregator: Version 3.1. o OPC UA C++ Server SDK: Version 6. o OPC Suite: Version 5.2. o uaGate: Version 1.74 3.2 VULNERABILITY OVERVIEW 3.2.1 OUT-OF-BOUNDS READ CWE-125 A crafted HTTP packet with a large content-length header can create a denial-of-service condition in Softing Secure Integration Server. CVE-2022-1069 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:N/S:U/ C:N/I:N/A:H ). 3.2.2 UNCONTROLLED SEARCH PATH ELEMENT CWE-427 The application searches for a library dll that is not found. If an attacker can place a dll with this name, then the attacker can leverage it to execute arbitrary code on the targeted Softing Secure Integration Server. CVE-2022-2334 has been assigned to this vulnerability. A CVSS v3 base score of 7.2 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:H/UI:N/S:U/ C:H/I:H/A:H ). 3.2.3 IMPROPER AUTHENTICATION CWE-287 Softing Secure Integration Server, edgeConnector, and edgeAggregator software ships with the default administrator credentials as `admin` and password as `admin`. This allows Softing to log in to the server directly to perform administrative functions. Upon installation or upon first login, the application does not ask the user to change the `admin` password. There is no warning or prompt to ask the user to change the default password, and to change the password, many steps are required. CVE-2022-2336 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:N/S:U/ C:H/I:H/A:H ). 3.2.4 RELATIVE PATH TRAVERSAL CWE-23 The "restore configuration" feature of Softing Secure Integration Server is vulnerable to a directory traversal vulnerability when processing zip files. An attacker can craft a zip file to load an arbitrary dll and execute code. Using the "restore configuration" feature to upload a zip file containing a path traversal file may cause a file to be created and executed upon touching the disk. CVE-2022-1373 has been assigned to this vulnerability. A CVSS v3 base score of 7.2 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:H/UI:N/S:U/ C:H/I:H/A:H ). 3.2.5 CLEARTEXT TRANSMISSION OF SENSITIVE INFORMATION CWE-319 Softing Secure Integration Server is vulnerable to authentication bypass via a machine-in-the-middle attack. The default the administration interface is accessible via plaintext HTTP protocol, facilitating the attack. The HTTP request may contain the session cookie in the request, which may be captured for use in authenticating to the server. CVE-2022-2338 has been assigned to this vulnerability. A CVSS v3 base score of 5.7 has been calculated; the CVSS vector string is ( AV:A/AC:L/PR:N/UI:R/S:U/ C:H/I:N/A:N ). 3.2.6 NULL POINTER DEREFERENCE CWE-476 Softing OPC UA C++ Server SDK, Secure Integration Server, edgeConnector, edgeAggregator, OPC Suite, and uaGate are affected by a NULL pointer dereference vulnerability. CVE-2022-1748 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:N/S:U/ C:N/I:N/A:H ). 3.2.7 NULL POINTER DEREFERENCE CWE-476 A crafted HTTP packet with a missing HTTP URI can create a denial-of-service condition in Softing Secure Integration Server. CVE-2022-2337 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:N/S:U/ C:N/I:N/A:H ). 3.2.8 NULL POINTER DEREFERENCE CWE-476 A crafted HTTP packet without a content-type header can create a denial-of-service condition in Softing Secure Integration Server. CVE-2022-2547 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:N/S:U/ C:N/I:N/A:H ). 3.2.9 INTEGER UNDERFLOW (WRAP OR WRAPAROUND) CWE-191 A crafted HTTP packet with a -1 content-length header can create a denial-of-service condition in Softing Secure Integration Server. CVE-2022-2335 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:N/S:U/ C:N/I:N/A:H ). 3.3 BACKGROUND o CRITICAL INFRASTRUCTURE SECTORS: Multiple sectors o COUNTRIES/AREAS DEPLOYED: Worldwide o COMPANY HEADQUARTERS LOCATION: Germany 3.4 RESEARCHER Pedro Ribeiro and Radek Domanski, working with Trend Micro Zero Day Initiative, reported these vulnerabilities to Softing and CISA. 4. MITIGATIONS Softing released new versions to address these vulnerabilities and notified known users of the releases. Users are advised to update to the new versions: o Softing Secure Integration Server V1.30 The latest software packages can be downloaded from the Softing website . Softing recommends the following mitigations and workarounds: o Change the admin password or create a new user with administrative rights and delete the default admin user. o Configure the Windows firewall to block network requests to IP port 9000. o Disable the HTTP Server in NGINX configuration of the Softing Secure Integration Server, only using the HTTPS server. For more details on these vulnerabilities and mitigations, users should see SYT-2022-7 , SYT-2022-6 , SYT-2022-5 , and SYT-2022-4 on the Softing security website . CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability these vulnerabilities. Specifically, users should: o Minimize network exposure for all control system devices and/or systems, and ensure they are not accessible from the Internet . o Locate control system networks and remote devices behind firewalls and isolate them from business networks. o 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. No known public exploits specifically target these vulnerabilities. These vulnerabilities are exploitable remotely. These vulnerabilities have a low attack complexity. 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. 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On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: https://auscert.org.au/gpg-key/ iQIVAwUBYvxMHskNZI30y1K9AQi1SQ/8DtHPJReesI1rd9lVYVmhJz68MULvyi9j +KCdWYiByWcUPF5Y3YGCO/rskl86ezbcX6MkSsA4itLKVCfcjJIju4axPzv3w6Ua eiEUz7RRAvFWWsKB2azVs1qlhO7ii1r6/EG3Jcz/rliStSLfdPBvWzAoPRT5RjN+ 04l4yBco0mcsmEiwQzbcMJXNscuOe+su3FmW9D3/C/6et/FwwoBwWzS6L5F9NcGb g9T3KSlGnYWHwIhINIS66C4gc4CyewJQENWSxuGokuTVRBnKx8/KVxX84/9QcTHc dQPbBXBln84CYd+RHrAv0Se86bWcMLeXkVNiPCMgt8Gzw/0dr+TE+QHtrDysQivR B8M466+YTzvtpuJDv7Q1E5V+C5ZzCdoyqNbm9bgIPDZXtRPV4A6P1gxAkaHy109q RRrNww8OXqakJtKuvpE0msJhVNsXc2+rDV8Xexgvnp3ZW/LIsMfCsiXDzxk2iLKx IHpe3TdcoQUgJIHyZtQcus+ufNb4NKp7gY5bMpPNgD0iDurJ8tR3vIu18Nosp+dO bI5Bk8bFopV9k4zPpa6X5JZwbjwRJ2oTI7vNKKyBgpAnfBu0C25UTrIy0lO8yPqL MxrHix6BWwyVUX/iyrgSzUREdkJE990AH+TKdBZTCe6xvH72udjH2k1UXG3gSiS9 QV88beRuWsY= =MoXZ -----END PGP SIGNATURE-----