CVE-2023-5347: Korenix Jetnet 7628xp-4f-eu Firmware vulnerability (CVSS 9.8)

Description

An Improper Verification of Cryptographic Signature vulnerability in the update process of Korenix JetNet Series allows replacing the whole operating system including Trusted Executables. This issue affects JetNet devices older than firmware version 2024/01.

CVSS 3.1 breakdown

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionNone

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Affected products

Korenix Jetnet 4508 Firmware2.3

Korenix Jetnet 4508f-m Firmware2.3

Korenix Jetnet 4508f-mw Firmware2.3

Korenix Jetnet 4508f-s Firmware2.3

Korenix Jetnet 4508f-sw Firmware2.3

Korenix Jetnet 4508if-m Firmware1.3

Korenix Jetnet 4508if-mw Firmware1.3

Korenix Jetnet 4508if-s Firmware1.3

Korenix Jetnet 4508if-sw Firmware1.3

Korenix Jetnet 4508i-w Firmware1.3

Korenix Jetnet 4508-w Firmware2.3

Korenix Jetnet 5310g Firmware2.6

Korenix Jetnet 5612g-4f Firmware1.2

Korenix Jetnet 5612gp-4f Firmware1.2

Korenix Jetnet 5620g-4c Firmware1.1

Korenix Jetnet 5728g-24p-ac-2dc-eu Firmware2.1

Korenix Jetnet 5728g-24p-ac-2dc-us Firmware2.1

Korenix Jetnet 6528gf-2ac-eu Firmware1.0

Korenix Jetnet 6528gf-2ac-us Firmware1.0

Korenix Jetnet 6528gf-2dc24 Firmware1.0

Korenix Jetnet 6528gf-2dc48 Firmware1.0

Korenix Jetnet 6528gf-ac-eu Firmware1.0

Korenix Jetnet 6528gf-ac-us Firmware1.0

Korenix Jetnet 6628x-4f-eu Firmware1.0

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

Patch & vendor advisories

https://www.beijerelectronics.com/en/support/Help___online?docId=69947

References

http://packetstormsecurity.com/files/176550/Korenix-JetNet-Series-Unauthenticated-Access.htmlExploitThird Party AdvisoryVDB Entry
https://cyberdanube.com/en/en-multiple-vulnerabilities-in-korenix-jetnet-series/ExploitThird Party Advisory
http://seclists.org/fulldisclosure/2024/Jan/11ExploitMailing ListThird Party Advisory
https://www.beijerelectronics.com/en/support/Help___online?docId=69947Vendor Advisory

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

Frequently asked

Is CVE-2023-5347 being actively exploited?

CVE-2023-5347 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 1.34%.

How severe is CVE-2023-5347?

CVE-2023-5347 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 1.34% probability of exploitation.

Which products are affected by CVE-2023-5347?

Affected products include Korenix Jetnet 4508 Firmware, Korenix Jetnet 4508f-m Firmware, Korenix Jetnet 4508f-mw Firmware, Korenix Jetnet 4508f-s Firmware, Korenix Jetnet 4508f-sw Firmware, and 19 more.

How do I fix CVE-2023-5347?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2023-5347 against the real software inventory on every managed device, every day. 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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