Vulnerability Monitor

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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.

Published

2021-08-24T19:15:32.967

Last Modified

2024-11-21T06:19:34.500

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 9.8 (CRITICAL)

CVSSv2 Vector

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

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

6.4

Weaknesses

Type: Primary
CWE-77

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	dlink	dir-816_firmware	1.10cnb05_r1b011d88210	Yes
Hardware	dlink	dir-816	a2	No

References

https://github.com/doudoudedi/main-DIR-816_A2_Command-injection Third Party Advisory ([email protected])
https://github.com/doudoudedi/main-DIR-816_A2_Command-injection/blob/main/injection.md Exploit, Third Party Advisory ([email protected])
https://www.dlink.com/en/security-bulletin/ Vendor Advisory ([email protected])
https://github.com/doudoudedi/main-DIR-816_A2_Command-injection Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/doudoudedi/main-DIR-816_A2_Command-injection/blob/main/injection.md Exploit, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.dlink.com/en/security-bulletin/ Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)