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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2022.1716 Advisory (icsa-22-104-03) Red Lion DA50N 20 April 2022 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Red Lion DA50N Publisher: ICS-CERT Operating System: Network Appliance Resolution: Mitigation CVE Names: CVE-2022-27179 CVE-2022-26516 CVE-2022-1039 Original Bulletin: https://us-cert.cisa.gov/ics/advisories/icsa-22-104-03 Comment: CVSS (Max): 9.6 CVE-2022-1039 (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/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:R/S:C/C:H/I:H/A:H - --------------------------BEGIN INCLUDED TEXT-------------------- ICS Advisory (ICSA-22-104-03) Red Lion DA50N Original release date: April 14, 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 9.6 o ATTENTION: Exploitable remotely/low attack complexity o Vendor: Red Lion o Equipment: DA50N o Vulnerabilities: Insufficient Verification of Data Authenticity, Weak Password Requirements, Use of Unmaintained Third-Party Components, Insufficiently Protected Credentials 2. RISK EVALUATION Successful exploitation of these vulnerabilities could result in data compromise, data modification, and a denial-of-service condition. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS The following versions of Red Lion DA50N, a networking gateway, are affected: o DA50N: All versions 3.2 VULNERABILITY OVERVIEW 3.2.1 INSUFFICIENT VERIFICATION OF DATA AUTHENTICITY CWE-345 Authorized users may install a maliciously modified package file when updating the device via the web user interface. The user may inadvertently use a package file obtained from an unauthorized source or a file that was compromised between download and deployment. CVE-2022-26516 has been assigned to this vulnerability. A CVSS v3 base score of 8.4 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:H/UI:R/S:C/ C:H/I:H/A:H ). 3.2.2 WEAK PASSWORD REQUIREMENTS CWE-521 The weak password on the web user interface can be exploited via HTTP or HTTPS. Once such access has been obtained, the other passwords can be changed. The weak password on Linux accounts can be accessed via SSH or Telnet, the former of which is by default enabled on trusted interfaces. While the SSH service does not support root login, a user logging in using either of the other Linux accounts may elevate to root access using the su command if they have access to the associated password. CVE-2022-1039 has been assigned to this vulnerability. A CVSS v3 base score of 9.6 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:R/S:C/ C:H/I:H/A:H ). 3.2.3 USE OF UNMAINTAINED THIRD-PARTY COMPONENTS CWE-1104 This product relies on an outdated, unmaintained Linux kernel v4.9.119 that contains multiple vulnerabilities that may impact security. 3.2.4 INSUFFICIENTLY PROTECTED CREDENTIALS CWE-522 A malicious actor having access to the exported configuration file may obtain the stored credentials and thereby gain access to the protected resource. If the same passwords were used for other resources, further such assets may be compromised. CVE-2022-27179 has been assigned to this vulnerability. A CVSS v3 base score of 4.6 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:L/UI:R/S:U/ C:L/I:L/A:N ). 3.3 BACKGROUND o CRITICAL INFRASTRUCTURE SECTORS: Multiple Sectors o COUNTRIES/AREAS DEPLOYED: Worldwide o COMPANY HEADQUARTERS LOCATION: United States 3.4 RESEARCHER Ron Brash of aDolus Technology Inc. reported these vulnerabilities to CISA. 4. MITIGATIONS Red Lion notes the DA50N series product is at end-of-life and does not intend to release a software update to address these vulnerabilities. Users are encouraged to apply workarounds and mitigations or upgrade their device to DA50A and DA70A. Red Lion has provided the following workarounds to help mitigate the risk of these vulnerabilities: o Do not install image files that are obtained from sources other than the official Red Lion website. o When downloading images from Red Lion's website, ensure the validity of the server's TLS certificate. o If package files or images are to be stored before deployment, ensure they are stored in a secure manner. o Minimize the risk of unauthorized installation via SD card by limiting physical access to the device. o Ensure the default UI password is changed to one meeting standard security practices. o Change the admin, rlcuser and techsup account passwords from their default values. o Disable the SSH service and keep the telnet service disabled if they are not required. o Do not re-use the same password for securing multiple resources. o Limit access to configuration files that contain valuable credentials. o Ensure the use of secure credentials when configuring optional services. o Enable only the minimum set of optional services required for the application. For additional information, refer to Red Lion's security alert . 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 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 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 on cisa.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 cisa.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 these vulnerabilities. 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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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 iQIVAwUBYl+ZkuNLKJtyKPYoAQihRw//YXeFA8o3kSnzJfDLZuV9nIhhiYTH3kFj AoXMTUXMrxMaxFz3hAktH5KM8gce/Ft2NXQi2aJBxldsmUmm5bT1W6CukukBajYV rT0VvLzyKAef64lS208Vo732GTaj6H295Hh8kUUaoJAwUwbgaYX+pi6/OZbKY4lh LJuTzqkTvaBew09KoWiLawNlTV+HpgNa5TjZUgfeSSXpRU3Tu54QaowC0jOp/+nn Vevo3MJ/i+h1TBy3HkP+xRW7jBQOAErUTwDlspqL9ZfeTezppVWiJnabWpTeZ0f9 5Dyq7LbF5ZMONhIopYTQ4H7DmTj6rEd3SyQhBejB003dIJLMMhFXXUEKGiVdyMmR cdD85RBEGxanKBWD1MqA/VdKuKqiHGbSGpb/OEGqWpqQJVfIuey6l/AJCLLaqS70 OHnhz6hYmlp+XCqr7/M3/oZ8mHf+fvk0KDEDwEhizkpoUCWfWWI5q61jibFP1YWU iXyqZqFK5Q4xYIk1gTTOD02s9RdittSsWcJmIOnpbmxQpVWCT54lcMzLHo0/m4Hi SplrlU1BfW8ij4cXNX5FEMYepZckHAeCFXrYH1Vk9R4InXFNW1mPX1RI+Bv7Wstx 5CYPhIKwek8oXVa4Aq/6u7Pc7t9LENGVgNqDHG42J3D47Y+QNDTYVeZD79I+hpW9 8juCqDiCdpg= =I1Ux -----END PGP SIGNATURE-----