CVE-2021-28839 Information

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.

CVSS Vector

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

Reference

https://www.dlink.com/en/security-bulletin/ https://github.com/zyw-200/EQUAFL/blob/main/dlink-email-cve.pdf https://github.com/zyw-200/EQUAFL/blob/main/dlink-email-cve2.pdf

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5