CVE-2021-39509

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-39509
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.

9.8 /10

CVSS v3 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5 /10

CVSS v2.0 : HIGH

V2 Legend

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References
Link Resource
https://github.com/doudoudedi/main-DIR-816_A2_Command-injection Third Party Advisory
https://github.com/doudoudedi/main-DIR-816_A2_Command-injection/blob/main/injection.md Exploit Third Party Advisory
https://www.dlink.com/en/security-bulletin/ Vendor Advisory
Configurations

Configuration 1 (hide)

AND
cpe:2.3:o:dlink:dir-816_firmware:1.10cnb05_r1b011d88210:*:*:*:*:*:*:*
cpe:2.3:h:dlink:dir-816:a2:*:*:*:*:*:*:*
History

01 Sep 2021, 00:35

Type Values Removed Values Added
CWE CWE-77
CPE cpe:2.3:o:dlink:dir-816_firmware:1.10cnb05_r1b011d88210:*:*:*:*:*:*:*
cpe:2.3:h:dlink:dir-816:a2:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : 7.5
v3 : 9.8
References (MISC) https://github.com/doudoudedi/main-DIR-816_A2_Command-injection - (MISC) https://github.com/doudoudedi/main-DIR-816_A2_Command-injection - Third Party Advisory
References (MISC) https://www.dlink.com/en/security-bulletin/ - (MISC) https://www.dlink.com/en/security-bulletin/ - Vendor Advisory
References (MISC) https://github.com/doudoudedi/main-DIR-816_A2_Command-injection/blob/main/injection.md - (MISC) https://github.com/doudoudedi/main-DIR-816_A2_Command-injection/blob/main/injection.md - Exploit, Third Party Advisory

31 Aug 2021, 18:15

Type Values Removed Values Added
Summary An issue was discovered in D-Link DIR-816 DIR-816A2_FWv1.10CNB05_R1B011D88210 750m11ac wireless router via the HTTP request parameter in the handler function of /goform/form2userconfig.cgi route, which can construct the user name string to delete the user function. 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.
References
  • (MISC) https://github.com/doudoudedi/main-DIR-816_A2_Command-injection -

24 Aug 2021, 19:15

Type Values Removed Values Added
New CVE
Information

Published : 2021-08-24 19:15

Updated : 2023-12-10 13:55

NVD link : CVE-2021-39509

Mitre link : CVE-2021-39509

CVE.ORG link : CVE-2021-39509

JSON object : View

Products Affected

dlink

  • dir-816
  • dir-816_firmware
CWE
CWE-77

Improper Neutralization of Special Elements used in a Command ('Command Injection')