CVE-2021-42849

A weak default password for the serial port was reported in some Lenovo Personal Cloud Storage devices that could allow unauthorized device access to an attacker with physical access.

CVSS v3 6.8 MEDIUM
CVSS v2.0 4.6 MEDIUM

6.8^/10

CVSS v3 : 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

4.6^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 3.9 / Impact : 6.4

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://iknow.lenovo.com.cn/detail/dc_200017.html	Vendor Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:lenovo:a1_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:lenovo:a1:-:*:*:*:*:*:*:*

Configuration 2 (hide)

AND

cpe:2.3:o:lenovo:t1_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:lenovo:t1:-:*:*:*:*:*:*:*

Configuration 3 (hide)

AND

cpe:2.3:o:lenovo:x1_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:lenovo:x1:-:*:*:*:*:*:*:*

Configuration 4 (hide)

AND

cpe:2.3:o:lenovo:t2_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:lenovo:t2:-:*:*:*:*:*:*:*

Configuration 5 (hide)

AND

cpe:2.3:o:lenovo:t2pro_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:lenovo:t2pro:-:*:*:*:*:*:*:*

History

26 Jun 2023, 17:59

Type	Values Removed	Values Added
CWE	~~CWE-798~~	CWE-287

Information

Published : 2022-05-18 16:15

Updated : 2024-02-28 19:09

NVD link : CVE-2021-42849

Mitre link : CVE-2021-42849

CVE.ORG link : CVE-2021-42849

JSON object : View

Products Affected

lenovo

t1_firmware
t2_firmware
x1_firmware
a1_firmware
t2pro_firmware
t2pro
t2
x1
a1
t1

CWE

CWE-287

Improper Authentication

CWE-798

Use of Hard-coded Credentials

{"id": "CVE-2021-42849", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 4.6, "accessVector": "LOCAL", "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 6.4, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 3.9, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"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}, {"type": "Secondary", "source": "psirt@lenovo.com", "cvssData": {"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}]}, "published": "2022-05-18T16:15:08.247", "references": [{"url": "https://iknow.lenovo.com.cn/detail/dc_200017.html", "tags": ["Vendor Advisory"], "source": "psirt@lenovo.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-287"}]}, {"type": "Secondary", "source": "psirt@lenovo.com", "description": [{"lang": "en", "value": "CWE-798"}]}], "descriptions": [{"lang": "en", "value": "A weak default password for the serial port was reported in some Lenovo Personal Cloud Storage devices that could allow unauthorized device access to an attacker with physical access."}, {"lang": "es", "value": "En algunos dispositivos Lenovo Personal Cloud Storage fue notificado una contrase\u00f1a d\u00e9bil por defecto para el puerto serie que podr\u00eda permitir el acceso no autorizado al dispositivo a un atacante con acceso f\u00edsico"}], "lastModified": "2023-06-26T17:59:32.433", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:lenovo:a1_firmware:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "26B4B1A2-26BB-4282-98E2-A1330A0B420A", "versionEndExcluding": "5.3.6.a1"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:lenovo:a1:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "2E4D45D6-C702-4093-BD49-50E237FD4D94"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:lenovo:t1_firmware:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "58D149F6-8029-4DCB-AE37-F094CE09CCDC", "versionEndExcluding": "5.3.6.t1"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:lenovo:t1:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "5AA9C614-61D6-4329-9BAE-EB24A68FAE6B"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:lenovo:x1_firmware:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "055D03D9-F4BE-4EAE-AF07-D8E807C0BF26", "versionEndExcluding": "5.3.8.x1"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:lenovo:x1:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "282CCA7C-F1B8-4E0D-923D-36C1E630EBF4"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:lenovo:t2_firmware:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DECB887A-404E-4DFA-B1F0-B12DC2376487", "versionEndExcluding": "5.3.8.t2"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:lenovo:t2:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "1783634F-B40E-48C4-8102-8112C9BC95F4"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:lenovo:t2pro_firmware:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "44D09A84-C0BE-4EB6-99F8-30184D7C8A40", "versionEndExcluding": "5.3.7.t2-pro"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:lenovo:t2pro:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "E31C853A-15FD-4D72-BA16-395A282E1E6B"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "psirt@lenovo.com"}