CVE-2023-6397

CVSS 3.1 Score 6.5 of 10 (medium)

Details

Published Feb 20, 2024
CWE ID 476

Summary

CVE-2023-6397 is a null pointer dereference vulnerability found in Zyxel ATP series firmware versions from 4.32 through 5.37 Patch 1 and USG FLEX series firmware versions from 4.50 through 5.37 Patch 1. This vulnerability could allow a LAN-based attacker to cause denial-of-service (DoS) conditions by downloading a crafted RAR compressed file onto a LAN-side host if the firewall has the “Anti-Malware” feature enabled. The vulnerability has a base severity of MEDIUM with a base score of 6.5 according to the CVSS:3.1 rating. The exploitability score is 2.8, and the impact score is 3.6, indicating a potential danger to organizations using the affected products. The vulnerability does not require any privileges or user interaction, and it can be exploited from an adjacent network, posing a high availability impact risk. Remediation for this vulnerability would involve updating the firmware to versions that are not affected by the issue.

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