CVE-2023-6764

State: Published
Severity: 8.1 High
Published: Feb 20, 2024
Updated: Aug 2, 2024
Reserved: Dec 13, 2023

Description

A format string vulnerability in a function of the IPSec VPN feature in Zyxel ATP series firmware versions from 4.32 through 5.37 Patch 1, USG FLEX series firmware versions from 4.50 through 5.37 Patch 1, USG FLEX 50(W) series firmware versions from 4.16 through 5.37 Patch 1, and USG20(W)-VPN series firmware versions from 4.16 through 5.37 Patch 1 could allow an attacker to achieve unauthorized remote code execution by sending a sequence of specially crafted payloads containing an invalid pointer; however, such an attack would require detailed knowledge of an affected device’s memory layout and configuration.

Scores

CVSS	Score	Vector	Source
3.1	8.1 High	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H	Zyxel

Weaknesses

CWE-134 Use of Externally-Controlled Format String

Affected Products

Product	Versions
ATP series firmwareZyxel	version 4.32 through 5.37 Patch 1Affected
USG FLEX series firmwareZyxel	version 4.50 through 5.37 Patch 1Affected
USG FLEX 50(W) series firmwareZyxel	version 4.16 through 5.37 Patch 1Affected
USG20(W)-VPN series firmwareZyxel	version 4.16 through 5.37 Patch 1Affected

References

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-firewalls-and-aps-02-20-2024vendor-advisory

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