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CVE-2022-40603

Quick assessment

Affected
Zyxel ZyWALL/USG 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 USG/ZyWALL是中国合勤（Zyxel）公司的一款防火墙。 Zyxel USG/ZyWALL V4.73之前版本、VPN V5.32之前版本、USG FLEX V5.32之前版本、ATP V5.32之前版本存在安全漏洞，该漏洞源于CGI程序存在跨站脚本(XSS)漏洞，这可能允许攻击者诱骗用户访问带有XSS负载的特制URL，如果在受害者的浏览器上执行恶意脚本，攻击者就可以访问一些基于浏览器的信息。

CVSS 4.7 · Medium EPSS 0.36% · P29
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I. Basic Information for CVE-2022-40603

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A cross-site scripting (XSS) vulnerability in the CGI program of Zyxel ZyWALL/USG series firmware versions 4.30 through 4.72, VPN series firmware versions 4.30 through 5.31, USG FLEX series firmware versions 4.50 through 5.31, and ATP series firmware versions 4.32 through 5.31, which could allow an attacker to trick a user into visiting a crafted URL with the XSS payload. Then, the attacker could gain access to some browser-based information if the malicious script is executed on the victim’s browser.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Zyxel USG/ZyWALL 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Zyxel USG/ZyWALL是中国合勤（Zyxel）公司的一款防火墙。 Zyxel USG/ZyWALL V4.73之前版本、VPN V5.32之前版本、USG FLEX V5.32之前版本、ATP V5.32之前版本存在安全漏洞，该漏洞源于CGI程序存在跨站脚本(XSS)漏洞，这可能允许攻击者诱骗用户访问带有XSS负载的特制URL，如果在受害者的浏览器上执行恶意脚本，攻击者就可以访问一些基于浏览器的信息。
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 ZyWALL/USG series firmware 4.30 through 4.72 -
Zyxel VPN series firmware 4.30 through 5.31 -
Zyxel USG FLEX series firmware 4.50 through 5.31 -
Zyxel ATP series firmware 4.32 through 5.31 -

II. Public POCs for CVE-2022-40603

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III. Intelligence Information for CVE-2022-40603

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Other References for CVE-2022-40603 (1)

IV. Related Vulnerabilities

Same product: ZyWALL/USG series firmware
Same vendor: Zyxel
Same weakness: CWE-79

V. Comments for CVE-2022-40603

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