The following Campbell Scientific dataloggers are affected:
INCIBE has coordinated the publication of a vulnerability in the mentioned Campbell Scientific dataloggers, which has been discovered by Carlos Antonini Cepeda.
CVE-2023-0321 has been assigned to this vulnerability. A CVSS v3.1 base score of 9,1 has been calculated; the CVSS vector string is AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
HTTP can be disabled or secured through username/password, and Pakbus can be secured through the use of PakBus encryption key and/or PakBus/TCP password.
Campbell Scientific offers a guide with instructions to maximize the security of all Internet connectivity of the affected devices (see more in the references).
Campbell Scientific dataloggers CR6, CR300, CR800, CR1000 and CR3000 may allow an attacker to download configuration files, which may contain sensitive information about the internal network. From factory defaults, the mentioned datalogges have HTTP and PakBus enabled.
The devices, with the default configuration, allow this situation via the PakBus port. The exploitation of this vulnerability may allow an attacker to download, modify, and upload new configuration files.
CWE-200: exposure of Sensitive Information to an Unauthorized Actor.
If you have any information regarding this advisory, please contact INCIBE as indicated in the 'CVE assignment and publication'.