Vulnerability Details CVE-2021-28839
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.006
EPSS Ranking 67.3%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 5.0
References
- https://github.com/zyw-200/EQUAFL/blob/main/dlink-email-cve.pdf
- https://github.com/zyw-200/EQUAFL/blob/main/dlink-email-cve2.pdf
- 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
- https://www.dlink.com/en/security-bulletin/
Products affected by CVE-2021-28839
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cpe:2.3:h:dlink:dap-2310:-
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cpe:2.3:h:dlink:dap-2330:-
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cpe:2.3:h:dlink:dap-2360:-
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cpe:2.3:h:dlink:dap-2553:-
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cpe:2.3:h:dlink:dap-2660:-
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cpe:2.3:h:dlink:dap-2690:-
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cpe:2.3:h:dlink:dap-2695:-
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cpe:2.3:h:dlink:dap-3320:-
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cpe:2.3:h:dlink:dap-3662:-
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cpe:2.3:o:dlink:dap-2310_firmware:2.0.7.rc031
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cpe:2.3:o:dlink:dap-2330_firmware:1.07.rc028
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cpe:2.3:o:dlink:dap-2360_firmware:2.07.rc043
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cpe:2.3:o:dlink:dap-2553_firmware:3.06.rc027
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cpe:2.3:o:dlink:dap-2660_firmware:1.13.rc074
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cpe:2.3:o:dlink:dap-2690_firmware:3.16.rc100
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cpe:2.3:o:dlink:dap-2695_firmware:1.17.rc063
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cpe:2.3:o:dlink:dap-3320_firmware:1.01.rc014
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cpe:2.3:o:dlink:dap-3662_firmware:1.01.rc022