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Message-ID: <20240820141106.711c50b6@syss.de> Date: Tue, 20 Aug 2024 14:11:06 +0200 From: Sebastian Hamann via Fulldisclosure <fulldisclosure@...lists.org> To: <fulldisclosure@...lists.org> Subject: [FD] [SYSS-2024-035] DiCal-RED - Missing Authentication for Critical Function -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Advisory ID: SYSS-2024-035 Product: DiCal-RED Manufacturer: Swissphone Wireless AG Affected Version(s): Unknown Tested Version(s): 4009 Vulnerability Type: Missing Authentication for Critical Function (CWE-306) Risk Level: High Solution Status: Open Manufacturer Notification: 2024-04-16 Solution Date: None Public Disclosure: 2024-08-20 CVE Reference: CVE-2024-36445 Author of Advisory: Sebastian Hamann, SySS GmbH ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Overview: DiCal-RED is a radio module for communication between emergency vehicles and control rooms. It provides Ethernet, Wi-Fi and cellular network connectivity and runs a Linux- and BusyBox-based operating system. The manufacturer describes the product as follows (see [1]): "The DiCal-Red radio data module reliably guides you to your destination. This is ensured by the linking of navigation (also for the transmission of position data) and various radio modules." Due to missing authentication checks, the device is vulnerable to remote code execution as root. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Vulnerability Details: The device provides a Telnet service on TCP port 23. This service grants access to an interactive shell as the system's root user and does not require authentication. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Proof of Concept (PoC): $ telnet <IP or hostname> root@...al-RED:~# id uid=0(root) gid=0(root) groups=0(root) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Solution: The manufacturer recommends not running the device in an untrusted network. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Disclosure Timeline: 2024-02-29: Vulnerability discovered 2024-04-16: Vulnerability reported to manufacturer 2024-05-10: Manufacturer states that the vulnerability will not be fixed 2024-05-14: Vulnerability reported to CERT-Bund 2024-08-13: CERT-Bund informs us that the vendor declared the product EOL 2024-08-20: Public disclosure of vulnerability ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ References: [1] Product website for DiCal-RED https://www.swissphone.com/solutions/components/terminals/radio-data-module-dical-red/ [2] SySS Security Advisory SYSS-2024-035 https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2024-035.txt [3] SySS Responsible Disclosure Policy https://www.syss.de/en/responsible-disclosure-policy ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Credits: This security vulnerability was found by Sebastian Hamann of SySS GmbH. E-Mail: sebastian.hamann@...s.de Public Key: https://www.syss.de/fileadmin/dokumente/PGPKeys/Sebastian_Hamann.asc Key ID: 0x9CE0E440429D8B96 Key Fingerprint: F643 DF21 62C4 7C53 7DB2 8BA1 9CE0 E440 429D 8B96 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Disclaimer: The information provided in this security advisory is provided "as is" and without warranty of any kind. Details of this security advisory may be updated in order to provide as accurate information as possible. The latest version of this security advisory is available on the SySS website. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Copyright: Creative Commons - Attribution (by) - Version 3.0 URL: http://creativecommons.org/licenses/by/3.0/deed.en -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEE9kPfIWLEfFN9souhnODkQEKdi5YFAmbEQgMACgkQnODkQEKd i5a+RA//U6KMckje2e155lbDDv0WKneeJ6Csa/DIjLVibgavlbtaXQwkV1AkRFUm waN/PLm5nI6Ish3jssLT86Y6HJxaosbijdPuUT5pPfcrvMl0Hh0qvEblAkXxK0VE CcfQeiiAsWeHxMpOp2a3P1qHk8TM1aoqsc+IQlZwO1QBCfKP6kXiuJE2tqjKcevf nl3O9MQ3x+gDpzQfVndbUWT8eTwnZ0tmL6a6xCbOznqnFuOpIpINbvy9p3Yn2PWe F4o2BOIxB+r8jOChSewBPXIzx+qJbunT3x/lhBj764a7qxnIdgN+Bvyl1dTC3l+g LvdKNDoRsmRVkZJtkRHVjGeEzoEus15DlWYqZcRKxSjQC24Cp2KYM5bGTM1jTDbE AZF6Ax/ECPRkU4HnP4HVHDYokY9Xl2sidFpRikCyAGEQsrKFgN9+ncqqg18kfWEX dWWVybcDKZ2DqgGYomVWS9CWRaG/TWZbW9Ys1Yo3WYs8BRbMYzPVJGsZsj7UI7Bu SrBkCvwXZVw6moQfl90dlLp56Ri3z8KVaiexHjYrFez84LoXm98M6/Ea4HIaf8HP ZrF6NPsAG+BNLR8kq8Ad3a1GbT7GJgecxt2pSEVpYAFS0131gAL/EEDWKYli6G81 f10KSC5fLBiVO2zQCIDvymmhbgpLSlF+s4llHXlrcOG2oVGkEBI= =3bUQ -----END PGP SIGNATURE----- _______________________________________________ Sent through the Full Disclosure mailing list https://nmap.org/mailman/listinfo/fulldisclosure Web Archives & RSS: https://seclists.org/fulldisclosure/
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