CVE-2021-4242

Sapido BR270n/BRC76n/GR297/RB1732 syscmd.htm os command injection

Severity Score

8.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

Una vulnerabilidad fue encontrada en Sapido BR270n, BRC76n, GR297 y RB1732 y clasificada como crítica. Una función desconocida del archivo ip/syscmd.htm es afectada por este problema. La manipulación conduce a la inyección de comandos del sistema operativo. El ataque puede lanzarse de forma remota. El exploit ha sido divulgado al público y puede utilizarse. El identificador de esta vulnerabilidad es VDB-214592.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2022-11-30 CVE Reserved
2022-11-30 CVE Published
2024-08-03 CVE Updated
2024-08-03 First Exploit
2024-12-17 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CWE-707: Improper Neutralization

CAPEC

References (3)

URL	Tag	Source
https://vuldb.com/?id.214592	Third Party Advisory

URL	Date	SRC
https://blog.csdn.net/qq_44159028/article/details/114590267	2024-08-03
https://github.com/smallpiggy/Sapido--rce/blob/main/Sapido%E8%B7%AF%E7%94%B1%E5%99%A8-rce.py	2024-08-03

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Sapido Search vendor "Sapido"	Br270n Firmware Search vendor "Sapido" for product "Br270n Firmware"	2.1.03 Search vendor "Sapido" for product "Br270n Firmware" and version "2.1.03"	-	Affected	in	Sapido Search vendor "Sapido"	Br270n Search vendor "Sapido" for product "Br270n"	-	-	Safe
Sapido Search vendor "Sapido"	Brc76n Firmware Search vendor "Sapido" for product "Brc76n Firmware"	2.1.03 Search vendor "Sapido" for product "Brc76n Firmware" and version "2.1.03"	-	Affected	in	Sapido Search vendor "Sapido"	Brc76n Search vendor "Sapido" for product "Brc76n"	-	-	Safe
Sapido Search vendor "Sapido"	Gr297n Firmware Search vendor "Sapido" for product "Gr297n Firmware"	2.1.3 Search vendor "Sapido" for product "Gr297n Firmware" and version "2.1.3"	-	Affected	in	Sapido Search vendor "Sapido"	Gr297n Search vendor "Sapido" for product "Gr297n"	-	-	Safe
Sapido Search vendor "Sapido"	Rb-1732 Firmware Search vendor "Sapido" for product "Rb-1732 Firmware"	2.0.43 Search vendor "Sapido" for product "Rb-1732 Firmware" and version "2.0.43"	-	Affected	in	Sapido Search vendor "Sapido"	Rb-1732 Search vendor "Sapido" for product "Rb-1732"	-	-	Safe