CVE-2021-28840
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.31%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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_config function of sbin/httpd binary. When the binary handle the specific HTTP GET request, the content in upload_file variable is NULL in the upload_config function then the strncasecmp would take NULL as first argument, and incur the NULL pointer dereference vulnerability.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 2.31% probability · 82th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- dlink/dap-2310 firmware · dlink/dap-2330 firmware · dlink/dap-2360 firmware · dlink/dap-2553 firmware · dlink/dap-2660 firmware · dlink/dap-2690 firmware · dlink/dap-2695 firmware · dlink/dap-3320 firmware · dlink/dap-3662 firmware
- Source
- cve@mitre.org
References
- https://github.com/zyw-200/EQUAFL/blob/main/dlink-email-cve.pdfExploit, Third Party Advisory
- https://github.com/zyw-200/EQUAFL/blob/main/dlink-email-cve2.pdfThird Party Advisory
- https://www.dlink.com/en/security-bulletin/Vendor Advisory
- https://github.com/zyw-200/EQUAFL/blob/main/dlink-email-cve.pdfExploit, Third Party Advisory
- https://github.com/zyw-200/EQUAFL/blob/main/dlink-email-cve2.pdfThird Party Advisory
- https://www.dlink.com/en/security-bulletin/Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.