Vulnerability Description
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DAP-2020 1.01rc001 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of the var:page parameter provided to the webproc endpoint. The issue results from the lack of proper validation of 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-13271.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Dlink | Dap-2020 Firmware | <= 1.01 |
| Dlink | Dap-2020 | All versions |
Related Weaknesses (CWE)
References
- https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP1PatchVendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-21-979/Third Party AdvisoryVDB Entry
- https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP1PatchVendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-21-979/Third Party AdvisoryVDB Entry
FAQ
What is CVE-2021-34863?
CVE-2021-34863 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 1.01rc001 routers. Authentication is not required to exploit this vulnerabil...
How severe is CVE-2021-34863?
CVE-2021-34863 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-2021-34863?
Check the references section above for vendor advisories and patch information. Affected products include: Dlink Dap-2020 Firmware, Dlink Dap-2020.