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CVE-2021-4242— Sapido BR270n/BRC76n/GR297/RB1732 syscmd.htm os command injection

Quick assessment

Affected
Sapido BR270n
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.

Sapido BR270n等都是Sapido公司的一款无线路由器。 Sapido BR270n、BRC76n、GR297、RB1732存在安全漏洞。攻击者利用该漏洞执行os命令注入攻击。

CVSS 6.3 · Medium EPSS 3.02% · P86

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-4242

Vulnerability Information
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Vulnerability Title
Sapido BR270n/BRC76n/GR297/RB1732 syscmd.htm os command injection
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was found in Sapido BR270n, BRC76n, GR297 and RB1732 and classified as critical. Affected by this issue is some unknown functionality of the file ip/syscmd.htm. The manipulation leads to os command injection. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-214592.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
对消息或数据结构的处理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
多款Sapido产品操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Sapido BR270n等都是Sapido公司的一款无线路由器。 Sapido BR270n、BRC76n、GR297、RB1732存在安全漏洞。攻击者利用该漏洞执行os命令注入攻击。
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
Sapido BR270n n/a -
Sapido BRC76n n/a -
Sapido GR297 n/a -
Sapido RB1732 n/a -

II. Public POCs for CVE-2021-4242

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III. Intelligence Information for CVE-2021-4242

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Vendor Advisories for CVE-2021-4242 (1)

Security Blog Posts for CVE-2021-4242 (1)

Other References for CVE-2021-4242 (1)

IV. Related Vulnerabilities

Same vendor: Sapido
Same weakness: CWE-707

V. Comments for CVE-2021-4242

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