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CVE-2021-34983— NETGEAR Multiple Routers httpd Missing Authentication for Critical Function Information Disclosure Vulnerability

Quick assessment

Affected
NETGEAR Multiple Routers
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.

Netgear NETGEAR是美国网件（Netgear）公司的一款路由器。连接两个或多个网络的硬件设备，在网络间起网关的作用。 NETGEAR路由器存在安全漏洞，该漏洞允许网络邻近攻击者可利用该漏洞泄露多个NETGEAR路由器受影响安装的敏感信息。利用此漏洞不需要身份验证。具体的缺陷存在于httpd服务中，该服务默认侦听TCP端口80。这个问题是由于在允许访问系统配置信息之前缺乏身份验证造成的。攻击者可利用该漏洞可以利用此漏洞公开存储的凭据，从而导致进一步的破坏。

AI Predicted 7.5 Difficulty: Trivial EPSS 0.33% · P24

Possible ATT&CK Techniques 1 AI

T1005 · Data from Local System
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I. Basic Information for CVE-2021-34983

Vulnerability Information
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Vulnerability Title
NETGEAR Multiple Routers httpd Missing Authentication for Critical Function Information Disclosure Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
NETGEAR Multiple Routers httpd Missing Authentication for Critical Function Information Disclosure Vulnerability. This vulnerability allows network-adjacent attackers to disclose sensitive information on affected installations of multiple NETGEAR routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the httpd service, which listens on TCP port 80 by default. The issue results from the lack of authentication prior to allowing access to system configuration information. An attacker can leverage this vulnerability to disclose stored credentials, leading to further compromise. Was ZDI-CAN-13708.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Netgear NETGEAR 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Netgear NETGEAR是美国网件（Netgear）公司的一款路由器。连接两个或多个网络的硬件设备，在网络间起网关的作用。 NETGEAR路由器存在安全漏洞，该漏洞允许网络邻近攻击者可利用该漏洞泄露多个NETGEAR路由器受影响安装的敏感信息。利用此漏洞不需要身份验证。具体的缺陷存在于httpd服务中，该服务默认侦听TCP端口80。这个问题是由于在允许访问系统配置信息之前缺乏身份验证造成的。攻击者可利用该漏洞可以利用此漏洞公开存储的凭据，从而导致进一步的破坏。
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
NETGEAR Multiple Routers V1.0.11.116_10.2.100 -

II. Public POCs for CVE-2021-34983

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III. Intelligence Information for CVE-2021-34983

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Vendor Advisories for CVE-2021-34983 (1)

Other References for CVE-2021-34983 (1)

Same Patch Batch · NETGEAR · 2024-05-07 · 4 CVEs total

CVE-2022-43654 NETGEAR CAX30S SSO Command Injection Remote Code Execution Vulnerability
CVE-2021-34982 NETGEAR Multiple Routers httpd Stack-based Buffer Overflow Remote Code Execution Vulnerabi
CVE-2021-34947 NETGEAR R7800 net-cgi Out-Of-Bounds Write Remote Code Execution Vulnerability

IV. Related Vulnerabilities

Same product: Multiple Routers
Same vendor: NETGEAR
Same weakness: CWE-306

V. Comments for CVE-2021-34983

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