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CVE-2022-27646

Quick assessment

Affected
NETGEAR R6700v3
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

NETGEAR R6700v3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 R6700v3 1.0.4.120_10.0.91版本存在授权问题漏洞。攻击者利用该漏洞通过特制的circleinfo.txt文件触发固定长度的基于堆栈的缓冲区溢出，进而在root环境中执行代码。

AI Predicted 8.1 Difficulty: Easy EPSS 1.43% · P71
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I. Basic Information for CVE-2022-27646

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6700v3 1.0.4.120_10.0.91 routers. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the circled daemon. A crafted circleinfo.txt file can trigger an overflow of a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-15879.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
栈缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
NETGEAR R6700v3 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
NETGEAR R6700v3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 R6700v3 1.0.4.120_10.0.91版本存在授权问题漏洞。攻击者利用该漏洞通过特制的circleinfo.txt文件触发固定长度的基于堆栈的缓冲区溢出，进而在root环境中执行代码。
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
NETGEAR R6700v3 1.0.4.120_10.0.91 -

II. Public POCs for CVE-2022-27646

# POC Description Source Link Shenlong Link
1 Demonstrate some functionalities of Morion by generating an exploit for CVE-2022-27646 (stack buffer overflow on Netgear R6700v3 routers). https://github.com/cyber-defence-campus/netgear_r6700v3_circled POC Details
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III. Intelligence Information for CVE-2022-27646

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Vendor Advisories for CVE-2022-27646 (1)

Other References for CVE-2022-27646 (1)

Same Patch Batch · NETGEAR · 2023-03-29 · 7 CVEs total

CVE-2022-27645 NETGEAR R6700v3 访问控制错误漏洞
CVE-2022-27641 NETGEAR R6700输入验证错误漏洞
CVE-2022-27642 NETGEAR R6700v3 信息泄露漏洞
CVE-2022-27643 NETGEAR R6700v3 授权问题漏洞
CVE-2022-27644 NETGEAR R6700v3 信任管理问题漏洞
CVE-2022-27647 NETGEAR R6700v3 操作系统命令注入漏洞

IV. Related Vulnerabilities

Same product: R6700v3
Same vendor: NETGEAR
Same weakness: CWE-121

V. Comments for CVE-2022-27646

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