Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.0492 Pangea Communications Internet FAX ATA 18 February 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Pangea Communications Internet FAX Analog Telephone Adapter Publisher: US-CERT Operating System: Network Appliance Impact/Access: Denial of Service -- Remote/Unauthenticated Unauthorised Access -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2019-6551 Original Bulletin: https://ics-cert.us-cert.gov/advisories/ICSA-19-045-01 - --------------------------BEGIN INCLUDED TEXT-------------------- Advisory (ICSA-19-045-01) Pangea Communications Internet FAX ATA Original release date: February 14, 2019 1. EXECUTIVE SUMMARY o CVSS v3 7.5 o ATTENTION: Exploitable remotely/low skill level to exploit/public exploits are available o Vendor: Pangea Communications o Equipment: Internet FAX Analog Telephone Adapter (ATA) o Vulnerability: Authentication Bypass Using an Alternate Path or Channel 2. RISK EVALUATION Successful exploitation of this vulnerability could cause the device to reboot and create a continual denial-of-service condition. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS The following versions of Pangea Internet FAX ATA, an Analog Telephone Adapter, are affected: o Internet FAX ATA Version 3.1.8 and prior. 3.2 VULNERABILITY OVERVIEW 3.2.1 AUTHENTICATION BYPASS USING AN ALTERNATE PATH OR CHANNEL CWE-288 Using a specially crafted URL, an attacker can bypass user authentication to cause the device to reboot, which may be used to cause a continual denial-of-service condition. CVE-2019-6551 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: Communication, Information Technology o COUNTRIES/AREAS DEPLOYED: Worldwide o COMPANY HEADQUARTERS LOCATION: United States 3.4 RESEARCHER Ankit Anubhav of NewSky Security reported this vulnerability to NCCIC. 4. MITIGATIONS Pangea Communications has contacted users of the affected product and have deployed a patch to resolve the issue. For more information, contact Pangea Communications support using the following link: https://www.pangea-comm.com/contact-us/ NCCIC recommends users take defensive measures to protect themselves from social engineering attacks: o Do not click web links or open unsolicited attachments in email messages. o Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams. o Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks. NCCIC reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures. NCCIC also provides a section for control systems security recommended practices on the ICS-CERT web page. 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-CERT website 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 NCCIC for tracking and correlation against other incidents. Legal Notice All information products included in http://ics-cert.us-cert.gov 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 http://www.us-cert.gov/tlp/. - --------------------------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. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. 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 iQIVAwUBXGoJL2aOgq3Tt24GAQiVexAAsXcRfyHdVLmAc8A54ZtDfdP1x4TRdOpx PfoXWXiU2fi//ujVCTFKeaM6IXVmRBDsAczEbVtm5ftV/T0r/8+jGsEIv6y9iMLL SRgl7DIYb5IIIvQcHqgf6lnQP3aIZI2Ue0WzyCuZcMGHBv50NGkZ2NT1jwuDNg2V U2xuIr64HEFgUOn+P2mP3fGbfH7Duk6tL9yPZeOoEaJZvej9imdy4TujcyhsNEcT ypwL+NmEhU6dSUDCK1+5e5sl8qpfSlGTK9C0lH3SptTEENBBMpjh+CScJQMUpWp3 vuQWdNFt6QQTxesSNVQpwaA7pVf6hXu97JCztLE6SAs5pD9OouZE1j5pVIVRMQvI a7wr2+kFMQzHlNhtWBJ6fPFIWD16Y3hPUcMR12Jn5wohURmJL2N4bu6vbOKsVp6o GL3618aZSYbZ4OilNWM7WXux0f7borPWNjp0Qvx4N/QOuCN11zFjMIW70RYNu0uZ oMeimSbCSWLaWCXCWnSWrNu4TrVj79n7P1GnG8mGYVYrUFwOmKpyEVc+z0JS/DHG demTd2CHNv1aqWWv1dT5lYADTdM7KibjkwH4XHdfbZi56MuqQkMjr0dd+7YIol0i k+w595rt02nKq6gRzg3h8jY938RVUleyjFDTo2BHSkPawYPZyDI+FMDVcZ86tPfq oNG5lFPYbGo= =0mnn -----END PGP SIGNATURE-----