CVE-2023-50916: Kyocera Device Manager path traversal (CVSS 7.2)

Description

Kyocera Device Manager before 3.1.1213.0 allows NTLM credential exposure during UNC path authentication via a crafted change from a local path to a UNC path. It allows administrators to configure the backup location of the database used by the application. Attempting to change this location to a UNC path via the GUI is rejected due to the use of a \ (backslash) character, which is supposed to be disallowed in a pathname. Intercepting and modifying this request via a proxy, or sending the request directly to the application endpoint, allows UNC paths to be set for the backup location. Once such a location is set, Kyocera Device Manager attempts to confirm access and will try to authenticate to the UNC path; depending on the configuration of the environment, this may authenticate to the UNC with Windows NTLM hashes. This could allow NTLM credential relaying or cracking attacks.

CVSS 3.1 breakdown

Attack vectorNetwork

Attack complexityLow

Privileges requiredHigh

User interactionNone

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected products

Kyocera Device Manager< 3.1.1213.0

Remediation

Fixed in

Kyocera Device Manager≥ 3.1.1213.0

Patch & vendor advisories

https://www.kyoceradocumentsolutions.us/en/about-us/pr-and-award-certifications/press/kyocera-device-manager-cve-2023-50196-vulnerability-solution-update.html

References

https://www.kyoceradocumentsolutions.us/en/about-us/pr-and-award-certifications/press/kyocera-device-manager-cve-2023-50196-vulnerability-solution-update.htmlVendor Advisory
https://www.trustwave.com/en-us/resources/security-resources/security-advisories/Third Party Advisory
https://www.trustwave.com/hubfs/Web/Library/Advisories_txt/TWSL2024-001_kyocera-v2.txtExploitThird Party Advisory

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

Frequently asked

Is CVE-2023-50916 being actively exploited?

CVE-2023-50916 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 4.63%.

How severe is CVE-2023-50916?

CVE-2023-50916 has a CVSS 3.1 base score of 7.2, rated high. EPSS estimates a 4.63% probability of exploitation.

Which products are affected by CVE-2023-50916?

Affected products include Kyocera Device Manager.

How do I fix CVE-2023-50916?

Upgrade affected software to a fixed version, for example Kyocera Device Manager 3.1.1213.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2023-50916 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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