CVE-2021-39509
Severity Score
9.8
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
1
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
An issue was discovered in D-Link DIR-816 DIR-816A2_FWv1.10CNB05_R1B011D88210 The HTTP request parameter is used in the handler function of /goform/form2userconfig.cgi route, which can construct the user name string to delete the user function. This can lead to command injection through shell metacharacters.
Se ha descubierto un problema en D-Link DIR-816 DIR-816A2_FWv1.10CNB05_R1B011D88210 El parámetro de solicitud HTTP se utiliza en la función del manejador de la ruta /goform/form2userconfig.cgi, que puede construir la cadena de nombre de usuario para eliminar la función de usuario. Esto puede llevar a la inyección de comandos a través de metacaracteres del shell
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2021-08-23 CVE Reserved
- 2021-08-24 CVE Published
- 2024-08-04 CVE Updated
- 2024-08-04 First Exploit
- 2024-08-27 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')
CAPEC
References (3)
| URL | Tag | Source |
|---|---|---|
| https://github.com/doudoudedi/main-DIR-816_A2_Command-injection | Third Party Advisory |
| URL | Date | SRC |
|---|---|---|
| https://github.com/doudoudedi/main-DIR-816_A2_Command-injection/blob/main/injection.md | 2024-08-04 |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://www.dlink.com/en/security-bulletin | 2021-09-01 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Dlink Search vendor "Dlink" | Dir-816 Firmware Search vendor "Dlink" for product "Dir-816 Firmware" | 1.10cnb05_r1b011d88210 Search vendor "Dlink" for product "Dir-816 Firmware" and version "1.10cnb05_r1b011d88210" | - |
Affected
| in | Dlink Search vendor "Dlink" | Dir-816 Search vendor "Dlink" for product "Dir-816" | a2 Search vendor "Dlink" for product "Dir-816" and version "a2" | - |
Safe
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