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 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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
mitreCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 76%
VendorProductVersion
dlinkdap-2310_firmware
2.0.7.rc031:rc031
dlinkdap-2330_firmware
1.07.rc028:rc028
dlinkdap-2360_firmware
2.07.rc043:rc043
dlinkdap-2553_firmware
3.06.rc027:rc027
dlinkdap-2660_firmware
1.13.rc074:rc074
dlinkdap-2690_firmware
3.16.rc100:rc100
dlinkdap-2695_firmware
1.17.rc063:rc063
dlinkdap-3320_firmware
1.01.rc014:rc014
dlinkdap-3662_firmware
1.01.rc022:rc022
𝑥
= Vulnerable software versions
Common Weakness Enumeration
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/