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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.

CVE-2023-5347 is a vulnerability classified under CWE-347 (Improper Verification of Cryptographic Signature) and CWE-327 (Use of a Broken or Risky Cryptographic Algorithm) affecting Korenix JetNet Series devices. The flaw resides in the update mechanism of these devices, where the cryptographic signature verification process is improperly implemented or bypassed. This weakness allows an attacker to supply a malicious firmware update that the device will accept as legitimate, enabling full replacement of the operating system and trusted executables. The compromised device can then be fully controlled by the attacker, leading to complete loss of confidentiality, integrity, and availability. The vulnerability requires no authentication or user interaction and can be exploited remotely over the network, as indicated by the CVSS vector (AV:N/AC:L/PR:N/UI:N). The affected versions include all firmware releases prior to 2024/01. While no public exploits have been reported yet, the critical CVSS score of 9.8 reflects the high risk posed by this vulnerability. The issue is particularly concerning for environments where JetNet devices are used in industrial control systems, critical infrastructure, or network edge devices, as attackers could leverage this to establish persistent footholds or disrupt operations.

Detailed information about CVE-2023-5347: CWE-347 Improper Verification of Cryptographic Signature in Korenix JetNet Series affecting Korenix JetNet Series. Get

CVE-2023-5347: CWE-347 Improper Verification of Cryptographic Signature in Korenix JetNet Series - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2023-5347: CWE-347 Improper Verification of Cryptographic Signature in Korenix JetNet Series

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