Details of VAR-202108-1038

ID

VAR-202108-1038

CVE

CVE-2021-28839

TITLE

plural D-Link DAP In the product NULL Pointer dereference vulnerability

Trust: 0.8

sources: JVNDB: JVNDB-2021-010920

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. plural D-Link DAP The product has NULL There is a vulnerability in pointer dereference.Service operation interruption (DoS) It may be put into a state. D-Link DAP-2310 is a single-band wireless network access point, suitable for small businesses or schools that require fast and reliable wireless networks. D-Link DAP-2330 is a wireless N300 single frequency PoE access point. Attackers can use vulnerabilities to cause the program to crash

Trust: 2.25

sources: NVD: CVE-2021-28839 // JVNDB: JVNDB-2021-010920 // CNVD: CNVD-2021-94841 // VULMON: CVE-2021-28839

IOT TAXONOMY

category:

['Network device']

sub_category:

Trust: 0.6

sources: CNVD: CNVD-2021-94841

AFFECTED PRODUCTS

vendor:	dlink	model:	dap-2360	scope:	eq	version:	2.07.rc043	Trust: 1.0
vendor:	dlink	model:	dap-2690	scope:	eq	version:	3.16.rc100	Trust: 1.0
vendor:	dlink	model:	dap-2553	scope:	eq	version:	3.06.rc027	Trust: 1.0
vendor:	dlink	model:	dap-2330	scope:	eq	version:	1.07.rc028	Trust: 1.0
vendor:	dlink	model:	dap-2310	scope:	eq	version:	2.0.7.rc031	Trust: 1.0
vendor:	dlink	model:	dap-3320	scope:	eq	version:	1.01.rc014	Trust: 1.0
vendor:	dlink	model:	dap-2660	scope:	eq	version:	1.13.rc074	Trust: 1.0
vendor:	dlink	model:	dap-3662	scope:	eq	version:	1.01.rc022	Trust: 1.0
vendor:	dlink	model:	dap-2695	scope:	eq	version:	1.17.rc063	Trust: 1.0
vendor:	d link	model:	dap-2330	scope:	-	version:	-	Trust: 0.8
vendor:	d link	model:	dap-2360	scope:	-	version:	-	Trust: 0.8
vendor:	d link	model:	dap-3320	scope:	-	version:	-	Trust: 0.8
vendor:	d link	model:	dap-2690	scope:	-	version:	-	Trust: 0.8
vendor:	d link	model:	dap-3662	scope:	-	version:	-	Trust: 0.8
vendor:	d link	model:	dap-2695	scope:	-	version:	-	Trust: 0.8
vendor:	d link	model:	dap-2310	scope:	-	version:	-	Trust: 0.8
vendor:	d link	model:	dap-2553	scope:	-	version:	-	Trust: 0.8
vendor:	d link	model:	dap-2660	scope:	-	version:	-	Trust: 0.8
vendor:	d link	model:	dap-2310 2.07.rc031	scope:	-	version:	-	Trust: 0.6
vendor:	d link	model:	dap-2330 1.07.rc028	scope:	-	version:	-	Trust: 0.6
vendor:	d link	model:	dap-2360 2.07.rc043	scope:	-	version:	-	Trust: 0.6
vendor:	d link	model:	dap-2553 3.06.rc027	scope:	-	version:	-	Trust: 0.6
vendor:	d link	model:	dap-2660 rap-1.76.rc031	scope:	-	version:	-	Trust: 0.6
vendor:	d link	model:	dap-2660 rcap-1.46.103.13	scope:	-	version:	-	Trust: 0.6

sources: CNVD: CNVD-2021-94841 // JVNDB: JVNDB-2021-010920 // NVD: CVE-2021-28839

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2021-28839
value:	HIGH
Trust: 1.0
NVD:	CVE-2021-28839
value:	HIGH
Trust: 0.8
CNVD:	CNVD-2021-94841
value:	MEDIUM
Trust: 0.6
CNNVD:	CNNVD-202108-998
value:	HIGH
Trust: 0.6
VULMON:	CVE-2021-28839
value:	MEDIUM
Trust: 0.1

nvd@nist.gov:	CVE-2021-28839
severity:	MEDIUM
baseScore:	5.0
vectorString:	AV:N/AC:L/AU:N/C:N/I:N/A:P
accessVector:	NETWORK
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	PARTIAL
exploitabilityScore:	10.0
impactScore:	2.9
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 1.9
CNVD:	CNVD-2021-94841
severity:	MEDIUM
baseScore:	5.0
vectorString:	AV:N/AC:L/AU:N/C:N/I:N/A:P
accessVector:	NETWORK
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	PARTIAL
exploitabilityScore:	10.0
impactScore:	2.9
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 0.6

nvd@nist.gov:	CVE-2021-28839
baseSeverity:	HIGH
baseScore:	7.5
vectorString:	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
attackVector:	NETWORK
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	HIGH
exploitabilityScore:	3.9
impactScore:	3.6
version:	3.1
Trust: 1.0
NVD:	CVE-2021-28839
baseSeverity:	HIGH
baseScore:	7.5
vectorString:	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
attackVector:	NETWORK
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	HIGH
exploitabilityScore:	NONE
impactScore:	NONE
version:	3.0
Trust: 0.8

sources: CNVD: CNVD-2021-94841 // VULMON: CVE-2021-28839 // JVNDB: JVNDB-2021-010920 // CNNVD: CNNVD-202108-998 // NVD: CVE-2021-28839

PROBLEMTYPE DATA

problemtype:	CWE-476	Trust: 1.0
problemtype:	NULL Pointer dereference (CWE-476) [NVD evaluation ]	Trust: 0.8

sources: JVNDB: JVNDB-2021-010920 // NVD: CVE-2021-28839

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202108-998

TYPE

code problem

Trust: 0.6

sources: CNNVD: CNNVD-202108-998

PATCH

title:

Security Bulletin

url:

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

Trust: 0.8

sources: JVNDB: JVNDB-2021-010920

EXTERNAL IDS

db:	NVD	id:	CVE-2021-28839	Trust: 3.9
db:	JVNDB	id:	JVNDB-2021-010920	Trust: 0.8
db:	CNVD	id:	CNVD-2021-94841	Trust: 0.6
db:	CNNVD	id:	CNNVD-202108-998	Trust: 0.6
db:	VULMON	id:	CVE-2021-28839	Trust: 0.1

sources: CNVD: CNVD-2021-94841 // VULMON: CVE-2021-28839 // JVNDB: JVNDB-2021-010920 // CNNVD: CNNVD-202108-998 // NVD: CVE-2021-28839

REFERENCES

url:	https://github.com/zyw-200/equafl/blob/main/dlink-email-cve.pdf	Trust: 2.5
url:	https://nvd.nist.gov/vuln/detail/cve-2021-28839	Trust: 2.0
url:	https://www.dlink.com/en/security-bulletin/	Trust: 1.7
url:	https://github.com/zyw-200/equafl/blob/main/dlink-email-cve2.pdf	Trust: 1.7
url:	https://cwe.mitre.org/data/definitions/476.html	Trust: 0.1
url:	https://nvd.nist.gov	Trust: 0.1

sources: CNVD: CNVD-2021-94841 // VULMON: CVE-2021-28839 // JVNDB: JVNDB-2021-010920 // CNNVD: CNNVD-202108-998 // NVD: CVE-2021-28839

SOURCES

db:	CNVD	id:	CNVD-2021-94841
db:	VULMON	id:	CVE-2021-28839
db:	JVNDB	id:	JVNDB-2021-010920
db:	CNNVD	id:	CNNVD-202108-998
db:	NVD	id:	CVE-2021-28839

LAST UPDATE DATE

2024-08-14T14:25:16.032000+00:00

SOURCES UPDATE DATE

db:	CNVD	id:	CNVD-2021-94841	date:	2021-12-07T00:00:00
db:	VULMON	id:	CVE-2021-28839	date:	2021-08-17T00:00:00
db:	JVNDB	id:	JVNDB-2021-010920	date:	2022-07-12T03:05:00
db:	CNNVD	id:	CNNVD-202108-998	date:	2021-08-24T00:00:00
db:	NVD	id:	CVE-2021-28839	date:	2021-08-17T14:59:57.643

SOURCES RELEASE DATE

db:	CNVD	id:	CNVD-2021-94841	date:	2021-12-07T00:00:00
db:	VULMON	id:	CVE-2021-28839	date:	2021-08-10T00:00:00
db:	JVNDB	id:	JVNDB-2021-010920	date:	2022-07-12T00:00:00
db:	CNNVD	id:	CNNVD-202108-998	date:	2021-08-10T00:00:00
db:	NVD	id:	CVE-2021-28839	date:	2021-08-10T18:15:07.180