CVE-2021-28839
Description
Null Pointer Dereference vulnerability exists in D-Link DAP-2310 2.07.RC031, DAP-2330 1.07.RC028, DAP-2360 2.07.RC043, DAP-2553 3.06.RC027, DAP-2660 1.13.RC074, DAP-2690 3.16.RC100, DAP-2695 1.17.RC063, DAP-3320 1.01.RC014 and DAP-3662 1.01.RC022 in the upload_certificate function of sbin/httpd binary. When the binary handle the specific HTTP GET request, the strrchr in the upload_certificate function would take NULL as first argument, and incur the NULL pointer dereference vulnerability.
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| dlink dap-2310_firmware | 2.0.7.rc031 | — |
| dlink dap-2330_firmware | 1.07.rc028 | — |
| dlink dap-2360_firmware | 2.07.rc043 | — |
| dlink dap-2553_firmware | 3.06.rc027 | — |
| dlink dap-2660_firmware | 1.13.rc074 | — |
| dlink dap-2690_firmware | 3.16.rc100 | — |
| dlink dap-2695_firmware | 1.17.rc063 | — |
| dlink dap-3320_firmware | 1.01.rc014 | — |
| dlink dap-3662_firmware | 1.01.rc022 | — |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.