CVE-2023-4398

State: Published
Severity: 7.5 High
Published: Nov 28, 2023
Updated: Oct 17, 2024
Reserved: Aug 17, 2023

Description

An integer overflow vulnerability in the source code of the QuickSec IPSec toolkit used in the VPN feature of the Zyxel ATP series firmware versions 4.32 through 5.37, USG FLEX series firmware versions 4.50 through 5.37, USG FLEX 50(W) series firmware versions 4.16 through 5.37, USG20(W)-VPN series firmware versions 4.16 through 5.37, and VPN series firmware versions 4.30 through 5.37, could allow an unauthenticated attacker to cause denial-of-service (DoS) conditions on an affected device by sending a crafted IKE packet.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	Zyxel

Weaknesses

CWE-190 Integer Overflow or Wraparound

Affected Products

Product	Versions
ATP series firmwareZyxel	versions 4.32 through 5.37Affected
USG FLEX series firmwareZyxel	versions 4.50 through 5.37Affected
USG FLEX 50(W) series firmwareZyxel	versions 4.16 through 5.37Affected
USG20(W)-VPN series firmwareZyxel	versions 4.16 through 5.37Affected
VPN series firmwareZyxel	versions 4.30 through 5.37Affected

References

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-firewalls-and-apsvendor-advisory

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