Advisory ID: SYSS-2024-042
Product: DiCal-RED
Manufacturer: Swissphone Wireless AG
Affected Version(s): Unknown
Tested Version(s): 4009
Vulnerability Type: Exposure of Sensitive Information to an Unauthorized Actor (CWE-200)
Risk Level: Medium
Solution Status: Open
Manufacturer Notification: 2024-04-16
Solution Date: None
Public Disclosure: 2024-08-20
CVE Reference: CVE-2024-36441
Author of Advisory: Sebastian Hamann, SySS GmbH

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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 the
disclosure of sensitive information.

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Vulnerability Details:

The device provides a network server on TCP port 2101. This service does not
seem to process any input, but it regularly sends data to connected clients.
This includes operation messages when they are processed by the device.
An unauthenticated attacker can therefore gain information about current
emergency situations and possibly also emergency vehicle positions or routes.

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Proof of Concept (PoC):

$ telnet <IP or hostname> 2101
[Wait ...]

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Solution:

The manufacturer recommends not running the device in an untrusted network.

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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

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References:

[1] Product website for DiCal-RED
https://www.swissphone.com/solutions/components/terminals/radio-data-module-dical-red/
[2] SySS Security Advisory SYSS-2024-042
https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2024-042.txt
[3] SySS Responsible Disclosure Policy
https://www.syss.de/en/responsible-disclosure-policy

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Credits:

This security vulnerability was found by Sebastian Hamann of SySS GmbH.

E-Mail: [email protected]
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

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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.

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Copyright:

Creative Commons - Attribution (by) - Version 3.0
URL: http://creativecommons.org/licenses/by/3.0/deed.en

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