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CVE-2023-6764

Quick assessment

Affected
Zyxel ATP series firmware
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Zyxel ATP是中国合勤（Zyxel）公司的一款防火墙。 Zyxel ATP 4.32至5.37 Patch 1版本存在格式化字符串错误漏洞，该漏洞源于IPSec VPN功能存在格式字符串漏洞。

CVSS 8.1 · High EPSS 0.89% · P58
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I. Basic Information for CVE-2023-6764

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
使用外部控制的格式字符串
Source: CVE Program / CVE List V5
Vulnerability Title
Zyxel ATP 格式化字符串错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Zyxel ATP是中国合勤（Zyxel）公司的一款防火墙。 Zyxel ATP 4.32至5.37 Patch 1版本存在格式化字符串错误漏洞，该漏洞源于IPSec VPN功能存在格式字符串漏洞。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Zyxel ATP series firmware version 4.32 through 5.37 Patch 1 -
Zyxel USG FLEX series firmware version 4.50 through 5.37 Patch 1 -
Zyxel USG FLEX 50(W) series firmware version 4.16 through 5.37 Patch 1 -
Zyxel USG20(W)-VPN series firmware version 4.16 through 5.37 Patch 1 -

II. Public POCs for CVE-2023-6764

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III. Intelligence Information for CVE-2023-6764

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Other References for CVE-2023-6764 (1)

Same Patch Batch · Zyxel · 2024-02-20 · 4 CVEs total

CVE-2023-6398 7.2 HIGH Zyxel ATP 安全漏洞
CVE-2023-6397 6.5 MEDIUM Zyxel ATP 代码问题漏洞
CVE-2023-6399 5.7 MEDIUM Zyxel ATP 格式化字符串错误漏洞

IV. Related Vulnerabilities

Same product: ATP series firmware
Same vendor: Zyxel
Same weakness: CWE-134

V. Comments for CVE-2023-6764

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