CVE-2021-27248 — HIGH (8.8)

Vulnerability Description

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. When parsing the getpage parameter, the process does not properly validate the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-10932.

CVSS Score

8.8

HIGH

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Dlink	Dap-2020 Firmware	1.01
Dlink	Dap-2020	-

Related Weaknesses (CWE)

CWE-121

References

https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP1PatchVendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-203/Third Party AdvisoryVDB Entry
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP1PatchVendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-203/Third Party AdvisoryVDB Entry

FAQ

What is CVE-2021-27248?

CVE-2021-27248 is a vulnerability with a CVSS score of 8.8 (HIGH). 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 th...

How severe is CVE-2021-27248?

CVE-2021-27248 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-27248?

Check the references section above for vendor advisories and patch information. Affected products include: Dlink Dap-2020 Firmware, Dlink Dap-2020.