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[email protected]CVE-2021-28839

HistoryAug 10, 2021 - 6:15 p.m.

CVE-2021-28839

2021-08-1018:15:00

CWE-476

[email protected]

web.nvd.nist.gov

cve

2021

28839

null pointer dereference

d-link

dap-2310

dap-2330

dap-2360

dap-2553

dap-2660

dap-2690

dap-2695

dap-3320

dap-3662

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

0.002 Low

EPSS

Percentile

54.6%

JSON

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.

CPENameOperatorVersion
dlink:dap-2310_firmwaredlink dap-2310 firmwareeq2.0.7.rc031
dlink:dap-2330_firmwaredlink dap-2330 firmwareeq1.07.rc028
dlink:dap-2360_firmwaredlink dap-2360 firmwareeq2.07.rc043
dlink:dap-2553_firmwaredlink dap-2553 firmwareeq3.06.rc027
dlink:dap-2660_firmwaredlink dap-2660 firmwareeq1.13.rc074
dlink:dap-2690_firmwaredlink dap-2690 firmwareeq3.16.rc100
dlink:dap-2695_firmwaredlink dap-2695 firmwareeq1.17.rc063
dlink:dap-3320_firmwaredlink dap-3320 firmwareeq1.01.rc014
dlink:dap-3662_firmwaredlink dap-3662 firmwareeq1.01.rc022

CPE	Name	Operator	Version
dlink:dap-2310_firmware	dlink dap-2310 firmware	eq	2.0.7.rc031
dlink:dap-2330_firmware	dlink dap-2330 firmware	eq	1.07.rc028
dlink:dap-2360_firmware	dlink dap-2360 firmware	eq	2.07.rc043
dlink:dap-2553_firmware	dlink dap-2553 firmware	eq	3.06.rc027
dlink:dap-2660_firmware	dlink dap-2660 firmware	eq	1.13.rc074
dlink:dap-2690_firmware	dlink dap-2690 firmware	eq	3.16.rc100
dlink:dap-2695_firmware	dlink dap-2695 firmware	eq	1.17.rc063
dlink:dap-3320_firmware	dlink dap-3320 firmware	eq	1.01.rc014
dlink:dap-3662_firmware	dlink dap-3662 firmware	eq	1.01.rc022

References

github.com/zyw-200/EQUAFL/blob/main/dlink-email-cve.pdf

github.com/zyw-200/EQUAFL/blob/main/dlink-email-cve2.pdf

www.dlink.com/en/security-bulletin/

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

0.002 Low

EPSS

Percentile

54.6%

JSON

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