// For flags

CVE-2021-27708

 

Severity Score

9.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

2
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Command Injection in TOTOLINK X5000R router with firmware v9.1.0u.6118_B20201102, and TOTOLINK A720R router with firmware v4.1.5cu.470_B20200911 allows remote attackers to execute arbitrary OS commands by sending a modified HTTP request. This occurs because the function executes glibc's system function with untrusted input. In the function, "command" parameter is directly passed to the attacker, allowing them to control the "command" field to attack the OS.

Una inyección de comandos en el enrutador TOTOLINK X5000R con firmware v9.1.0u.6118_B20201102, permite a atacantes remotos ejecutar comandos arbitrarios del Sistema Operativo mediante el envío de una petición HTTP modificada. Esto ocurre porque la función ejecuta la función del sistema de glibc con una entrada que no es confiable. En la función, el parámetro "command" se pasa directamente al atacante, lo que le permite controlar el campo "command" para atacar el sistema operativo

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-02-25 CVE Reserved
  • 2021-04-14 CVE Published
  • 2024-08-03 CVE Updated
  • 2024-08-03 First Exploit
  • 2024-08-17 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CAPEC
References (2)
URL Tag Source
URL Date SRC
https://hackmd.io/7FtB06f-SJ-SCfkMYcXYxA 2024-08-03
https://hackmd.io/mDgIBvoxSPCZrZiZjfQGhw 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
Totolink
Search vendor "Totolink"
 X5000r Firmware
Search vendor "Totolink" for product "X5000r Firmware"
 9.1.0u.6118_b20201102
Search vendor "Totolink" for product "X5000r Firmware" and version "9.1.0u.6118_b20201102"
-
Affected
in Totolink
Search vendor "Totolink"
 X5000r
Search vendor "Totolink" for product "X5000r"
--
Safe
Totolink
Search vendor "Totolink"
 A720r Firmware
Search vendor "Totolink" for product "A720r Firmware"
 4.1.5cu.470_b20200911
Search vendor "Totolink" for product "A720r Firmware" and version "4.1.5cu.470_b20200911"
-
Affected
in Totolink
Search vendor "Totolink"
 A720r
Search vendor "Totolink" for product "A720r"
--
Safe