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ID

VAR-202004-1871


CVE

CVE-2020-9276


TITLE

D-Link DSL-2640B B2 buffer error vulnerability

Trust: 1.2

sources: CNVD: CNVD-2020-27250 // CNNVD: CNNVD-202004-1667

DESCRIPTION

An issue was discovered on D-Link DSL-2640B B2 EU_4.01B devices. The function do_cgi(), which processes cgi requests supplied to the device's web servers, is vulnerable to a remotely exploitable stack-based buffer overflow. Unauthenticated exploitation is possible by combining this vulnerability with CVE-2020-9277. D-Link DSL-2640B B2 The device is vulnerable to out-of-bounds writes.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be put into a state. D-Link DSL-2640B B2 is a wireless router from D-Link, Taiwan. There is a buffer error vulnerability in the ‘do_cgi()’ function in the D-Link DSL-2640B B2 EU_4.01B version. An attacker can exploit this vulnerability by providing a malicious cgi module name in the URL to execute the code on the device with administrative rights

Trust: 2.25

sources: NVD: CVE-2020-9276 // JVNDB: JVNDB-2020-004758 // CNVD: CNVD-2020-27250 // VULMON: CVE-2020-9276

IOT TAXONOMY

category:['Network device']sub_category: -

Trust: 0.6

sources: CNVD: CNVD-2020-27250

AFFECTED PRODUCTS

vendor:dlinkmodel:dsl-2640bscope:eqversion:eu_4.01b

Trust: 1.0

vendor:d linkmodel:dsl-2640bscope:eqversion:eu_4.01b

Trust: 0.8

vendor:d linkmodel:dsl-2640b b2 eu 4.01bscope: - version: -

Trust: 0.6

sources: CNVD: CNVD-2020-27250 // JVNDB: JVNDB-2020-004758 // NVD: CVE-2020-9276

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov: CVE-2020-9276
value: HIGH

Trust: 1.0

NVD: JVNDB-2020-004758
value: HIGH

Trust: 0.8

CNVD: CNVD-2020-27250
value: HIGH

Trust: 0.6

CNNVD: CNNVD-202004-1667
value: HIGH

Trust: 0.6

VULMON: CVE-2020-9276
value: HIGH

Trust: 0.1

nvd@nist.gov: CVE-2020-9276
severity: HIGH
baseScore: 9.0
vectorString: AV:N/AC:L/AU:S/C:C/I:C/A:C
accessVector: NETWORK
accessComplexity: LOW
authentication: SINGLE
confidentialityImpact: COMPLETE
integrityImpact: COMPLETE
availabilityImpact: COMPLETE
exploitabilityScore: 8.0
impactScore: 10.0
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 1.1

NVD: JVNDB-2020-004758
severity: HIGH
baseScore: 9.0
vectorString: AV:N/AC:L/AU:S/C:C/I:C/A:C
accessVector: NETWORK
accessComplexity: LOW
authentication: SINGLE
confidentialityImpact: COMPLETE
integrityImpact: COMPLETE
availabilityImpact: COMPLETE
exploitabilityScore: NONE
impactScore: NONE
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 0.8

CNVD: CNVD-2020-27250
severity: HIGH
baseScore: 9.0
vectorString: AV:N/AC:L/AU:S/C:C/I:C/A:C
accessVector: NETWORK
accessComplexity: LOW
authentication: SINGLE
confidentialityImpact: COMPLETE
integrityImpact: COMPLETE
availabilityImpact: COMPLETE
exploitabilityScore: 8.0
impactScore: 10.0
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 0.6

nvd@nist.gov: CVE-2020-9276
baseSeverity: HIGH
baseScore: 8.8
vectorString: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
attackVector: NETWORK
attackComplexity: LOW
privilegesRequired: LOW
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: HIGH
integrityImpact: HIGH
availabilityImpact: HIGH
exploitabilityScore: 2.8
impactScore: 5.9
version: 3.1

Trust: 1.0

NVD: JVNDB-2020-004758
baseSeverity: HIGH
baseScore: 8.8
vectorString: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
attackVector: NETWORK
attackComplexity: LOW
privilegesRequired: LOW
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: HIGH
integrityImpact: HIGH
availabilityImpact: HIGH
exploitabilityScore: NONE
impactScore: NONE
version: 3.0

Trust: 0.8

sources: CNVD: CNVD-2020-27250 // VULMON: CVE-2020-9276 // JVNDB: JVNDB-2020-004758 // CNNVD: CNNVD-202004-1667 // NVD: CVE-2020-9276

PROBLEMTYPE DATA

problemtype:CWE-787

Trust: 1.8

sources: JVNDB: JVNDB-2020-004758 // NVD: CVE-2020-9276

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202004-1667

TYPE

buffer error

Trust: 0.6

sources: CNNVD: CNNVD-202004-1667

CONFIGURATIONS

sources:
            
            
            JVNDB: JVNDB-2020-004758

PATCH
title:Security Bulletinurl:https://www.dlink.com/en/security-bulletin
Trust: 0.8
sources:
            
            
            JVNDB: JVNDB-2020-004758

EXTERNAL IDS
db:NVDid:CVE-2020-9276
Trust: 3.1
db:JVNDBid:JVNDB-2020-004758
Trust: 0.8
db:CNVDid:CNVD-2020-27250
Trust: 0.6
db:CNNVDid:CNNVD-202004-1667
Trust: 0.6
db:VULMONid:CVE-2020-9276
Trust: 0.1
sources:
            
            
            CNVD: CNVD-2020-27250 // 
            
            
            
            VULMON: CVE-2020-9276 // 
            
            
            
            JVNDB: JVNDB-2020-004758 // 
            
            
            
            CNNVD: CNNVD-202004-1667 // 
            
            
            
            NVD: CVE-2020-9276

REFERENCES
url:https://raelize.com/posts/d-link-dsl-2640b-security-advisories/
Trust: 2.5
url:https://nvd.nist.gov/vuln/detail/cve-2020-9276
Trust: 2.0
url:https://raelize.com/advisories/cve-2020-9276_d-link-dsl-2640b_do_cgi-buffer-overflow_v1.0.txt
Trust: 1.7
url:https://www.dlink.com/en/security-bulletin
Trust: 1.7
url:https://cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2020-9276
Trust: 0.8
url:https://cwe.mitre.org/data/definitions/787.html
Trust: 0.1
url:https://nvd.nist.gov
Trust: 0.1
url:https://raelize.com/posts/d-link-dsl-2640b-security-advisories/#cve-2020-9276----d-link-dsl-2640b---do_cgi-buffer-overflow
Trust: 0.1
sources:
            
            
            CNVD: CNVD-2020-27250 // 
            
            
            
            VULMON: CVE-2020-9276 // 
            
            
            
            JVNDB: JVNDB-2020-004758 // 
            
            
            
            CNNVD: CNNVD-202004-1667 // 
            
            
            
            NVD: CVE-2020-9276

SOURCES
db:CNVDid:CNVD-2020-27250
db:VULMONid:CVE-2020-9276
db:JVNDBid:JVNDB-2020-004758
db:CNNVDid:CNNVD-202004-1667
db:NVDid:CVE-2020-9276

LAST UPDATE DATE
2024-11-23T22:51:25.910000+00:00

SOURCES UPDATE DATE
db:CNVDid:CNVD-2020-27250date:2020-05-09T00:00:00
db:VULMONid:CVE-2020-9276date:2020-04-28T00:00:00
db:JVNDBid:JVNDB-2020-004758date:2020-05-27T00:00:00
db:CNNVDid:CNNVD-202004-1667date:2020-04-29T00:00:00
db:NVDid:CVE-2020-9276date:2024-11-21T05:40:20.227

SOURCES RELEASE DATE
db:CNVDid:CNVD-2020-27250date:2020-05-09T00:00:00
db:VULMONid:CVE-2020-9276date:2020-04-20T00:00:00
db:JVNDBid:JVNDB-2020-004758date:2020-05-27T00:00:00
db:CNNVDid:CNNVD-202004-1667date:2020-04-20T00:00:00
db:NVDid:CVE-2020-9276date:2020-04-20T23:15:12.643