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CVE-2021-40847

Quick assessment

Affected
n/a n/a
Exploitation
High exploitation probability; assess promptly
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 routers 存在安全漏洞，远程攻击者可以在Circle 家长控制服务的更新过程中通过 MitM 攻击以 root 身份远程执行代码。

AI Predicted 7.3 Difficulty: Hard EPSS 10.01% · P95
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I. Basic Information for CVE-2021-40847

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
The update process of the Circle Parental Control Service on various NETGEAR routers allows remote attackers to achieve remote code execution as root via a MitM attack. While the parental controls themselves are not enabled by default on the routers, the Circle update daemon, circled, is enabled by default. This daemon connects to Circle and NETGEAR to obtain version information and updates to the circled daemon and its filtering database. However, database updates from NETGEAR are unsigned and downloaded via cleartext HTTP. As such, an attacker with the ability to perform a MitM attack on the device can respond to circled update requests with a crafted, compressed database file, the extraction of which gives the attacker the ability to overwrite executable files with attacker-controlled code. This affects R6400v2 1.0.4.106, R6700 1.0.2.16, R6700v3 1.0.4.106, R6900 1.0.2.16, R6900P 1.3.2.134, R7000 1.0.11.123, R7000P 1.3.2.134, R7850 1.0.5.68, R7900 1.0.4.38, R8000 1.0.4.68, and RS400 1.5.0.68.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
NETGEAR 代码注入漏洞
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 routers 存在安全漏洞，远程攻击者可以在Circle 家长控制服务的更新过程中通过 MitM 攻击以 root 身份远程执行代码。
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
- n/a n/a -

II. Public POCs for CVE-2021-40847

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III. Intelligence Information for CVE-2021-40847

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Security Blog Posts for CVE-2021-40847 (1)

Other References for CVE-2021-40847 (1)

Same Patch Batch · n/a · 2021-09-21 · 20 CVEs total

CVE-2021-23444 5.6 MEDIUM Prototype Pollution
CVE-2021-23443 5.4 MEDIUM Cross-site Scripting (XSS)
CVE-2021-41382 Plastic Scm安全漏洞
CVE-2021-31917 Red Hat Infinispan授权问题漏洞
CVE-2020-23273 Appneta Tcpreplay 缓冲区错误漏洞
CVE-2020-23269 GPAC 缓冲区错误漏洞
CVE-2020-23267 gpac 缓冲区错误漏洞
CVE-2020-23266 GPAC 缓冲区错误漏洞
CVE-2020-19554 Zoho Corporation ManageEngine OPManager 跨站脚本漏洞
CVE-2020-19553 Wuzhi WUZHI CMS 跨站脚本漏洞
CVE-2020-19551 Wuzhi WUZHI CMS 安全漏洞
CVE-2021-40868 Cloudron 跨站脚本漏洞
CVE-2021-41525 FlexNet Code Insight 安全漏洞
CVE-2021-37741 ZOHO ManageEngine ADManager Plus 代码问题漏洞
CVE-2021-37419 ADSelfService Plus 代码问题漏洞
CVE-2021-37420 Zoho Corporation ADSelfService Plus 访问控制错误漏洞
CVE-2021-37424 ZOHO ManageEngine ADSelfService Plus安全漏洞
CVE-2021-28960 ZOHO ManageEngine Desktop Central 命令注入漏洞
CVE-2021-0869 Google Android 缓冲区错误漏洞

IV. Related Vulnerabilities

Same product: n/a
Same vendor: n/a

V. Comments for CVE-2021-40847

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