CVE-2021-27249: D-Link DAP-2020 WEB_CmdFileList Command Injection Remote Code Execution Vulnerability
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DAP-2020 v1.01rc001 Wi-Fi access points. Authentication is not required to exploit this vulnerability. The specific flaw exists within the processing of CGI scripts. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-11369.
Other sources
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DAP-2020 Wi-Fi access points. Authentication is not required to exploit this vulnerability. The specific flaw exists within the processing of CGI scripts. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of root.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2021-27249?
The severity of CVE-2021-27249 is high with a CVSS score of 8.8.
How does CVE-2021-27249 allow attackers to execute arbitrary code?
CVE-2021-27249 allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DAP-2020 v1.01rc001.
Is authentication required to exploit CVE-2021-27249?
No, authentication is not required to exploit CVE-2021-27249.
Which software versions of D-Link DAP-2020 are affected by CVE-2021-27249?
D-Link DAP-2020 v1.01rc001 is affected by CVE-2021-27249.
How can I fix the vulnerability in D-Link DAP-2020?
To fix the vulnerability in D-Link DAP-2020, update the firmware to version 1.01rc001 or later as per the vendor's recommendation.