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CVE-2022-43391

Quick assessment

Affected
Zyxel NR7101 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 NR7101是合勤（Zyxel）的一个路由器。 Zyxel NR7101 V1.15(ACCC.3)C0之前版本存在安全漏洞，该漏洞源于CGI程序参数中存在缓冲区溢出漏洞，允许经过身份验证的攻击者通过发送特制的HTTP请求导致拒绝服务(DoS)。

CVSS 6.5 · Medium EPSS 0.72% · P51
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I. Basic Information for CVE-2022-43391

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A buffer overflow vulnerability in the parameter of the CGI program in Zyxel NR7101 firmware prior to V1.15(ACCC.3)C0, which could allow an authenticated attacker to cause denial-of-service (DoS) conditions by sending a crafted HTTP request.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: CVE Program / CVE List V5
Vulnerability Title
Zyxel NR7101 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Zyxel NR7101是合勤（Zyxel）的一个路由器。 Zyxel NR7101 V1.15(ACCC.3)C0之前版本存在安全漏洞，该漏洞源于CGI程序参数中存在缓冲区溢出漏洞，允许经过身份验证的攻击者通过发送特制的HTTP请求导致拒绝服务(DoS)。
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 NR7101 firmware < V1.15(ACCC.3)C0 -

II. Public POCs for CVE-2022-43391

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III. Intelligence Information for CVE-2022-43391

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Other References for CVE-2022-43391 (1)

Same Patch Batch · Zyxel · 2023-01-11 · 5 CVEs total

CVE-2022-43389 8.6 HIGH Zyxel NR7101 安全漏洞
CVE-2022-43393 8.2 HIGH Zyxel GS1920 代码问题漏洞
CVE-2022-43392 6.5 MEDIUM Zyxel NR7101 安全漏洞
CVE-2022-43390 5.4 MEDIUM Zyxel NR7101 操作系统命令注入漏洞

IV. Related Vulnerabilities

Same product: NR7101 firmware
Same vendor: Zyxel
Same weakness: CWE-120

V. Comments for CVE-2022-43391

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