CVE-2020-24395

The USB firmware update script of homee Brain Cube v2 (2.28.2 and 2.28.4) devices allows an attacker with physical access to install compromised firmware. This occurs because of insufficient validation of the firmware image file and can lead to code execution on the device.

CVSS v3.0 6.8 MEDIUM
CVSS v2.0 7.2 HIGH

6.8^/10

CVSS v3.0 : MEDIUM

Vector :

Exploitability : 0.9 / Impact : 5.9

Attack Vector PHYSICAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.2^/10

CVSS v2.0 : HIGH

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

Exploitability : 3.9 / Impact : 10.0

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://www.syss.de/pentest-blog/	Third Party Advisory
https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2020-026.txt	Third Party Advisory

Advertisement

Configurations

Configuration 1 (hide)

AND

OR	cpe:2.3:o:hom.ee:brain_cube_core:2.28.2:::::::*
	cpe:2.3:o:hom.ee:brain_cube_core:2.28.4:::::::*

cpe:2.3:h:hom.ee:brain_cube:-:*:*:*:*:*:*:*

Information

Published : 2021-05-20 07:15

Updated : 2021-06-03 09:43

NVD link : CVE-2020-24395

Mitre link : CVE-2020-24395

JSON object : View

CWE

CWE-345

Insufficient Verification of Data Authenticity

Advertisement

Products Affected

hom.ee

brain_cube_core
brain_cube

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://www.syss.de/pentest-blog/", "name": "https://www.syss.de/pentest-blog/", "tags": ["Third Party Advisory"], "refsource": "MISC"}, {"url": "https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2020-026.txt", "name": "https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2020-026.txt", "tags": ["Third Party Advisory"], "refsource": "MISC"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "The USB firmware update script of homee Brain Cube v2 (2.28.2 and 2.28.4) devices allows an attacker with physical access to install compromised firmware. This occurs because of insufficient validation of the firmware image file and can lead to code execution on the device."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-345"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2020-24395", "ASSIGNER": "cve@mitre.org"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 7.2, "accessVector": "LOCAL", "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C", "authentication": "NONE", "integrityImpact": "COMPLETE", "accessComplexity": "LOW", "availabilityImpact": "COMPLETE", "confidentialityImpact": "COMPLETE"}, "severity": "HIGH", "acInsufInfo": false, "impactScore": 10.0, "obtainAllPrivilege": false, "exploitabilityScore": 3.9, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.8, "attackVector": "PHYSICAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 0.9}}, "publishedDate": "2021-05-20T14:15Z", "configurations": {"nodes": [{"children": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:hom.ee:brain_cube_core:2.28.2:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:hom.ee:brain_cube_core:2.28.4:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:h:hom.ee:brain_cube:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}]}], "operator": "AND", "cpe_match": []}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2021-06-03T16:43Z"}