CVE-2021-38689

A stack buffer overflow vulnerability has been reported to affect QNAP device running QVR Elite, QVR Pro, QVR Guard. If exploited, this vulnerability allows attackers to execute arbitrary code. We have already fixed this vulnerability in the following versions of QVR Elite, QVR Pro, QVR Guard: QuTS hero h5.0.0: QVR Elite 2.1.4.0 (2021/12/06) and later QuTS hero h4.5.4: QVR Elite 2.1.4.0 (2021/12/06) and later QTS 5.0.0: QVR Elite 2.1.4.0 (2021/12/06) and later QTS 4.5.4: QVR Elite 2.1.4.0 (2021/12/06) and later QTS 4.5.4: QVR Pro 2.1.3.0 (2021/12/06) and later QTS 5.0.0: QVR Pro 2.1.3.0 (2021/12/06) and later QTS 4.5.4: QVR Guard 2.1.3.0 (2021/12/06) and later QTS 5.0.0: QVR Guard 2.1.3.0 (2021/12/06) and later

CVSS v3 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

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

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://www.qnap.com/en/security-advisory/qsa-21-59	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:qnap:qvr_elite::::::::
	cpe:2.3:a:qnap:qvr_guard::::::::
	cpe:2.3:a:qnap:qvr_pro::::::::

History

No history.

Information

Published : 2022-01-14 01:15

Updated : 2024-02-28 18:48

NVD link : CVE-2021-38689

Mitre link : CVE-2021-38689

CVE.ORG link : CVE-2021-38689

JSON object : View

Products Affected

qnap

qvr_guard
qvr_elite
qvr_pro

CWE

CWE-787

Out-of-bounds Write

CWE-120

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

{"id": "CVE-2021-38689", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 7.5, "accessVector": "NETWORK", "vectorString": "AV:N/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": "HIGH", "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/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": 3.9}, {"type": "Secondary", "source": "security@qnapsecurity.com.tw", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.1, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.2}]}, "published": "2022-01-14T01:15:08.557", "references": [{"url": "https://www.qnap.com/en/security-advisory/qsa-21-59", "tags": ["Vendor Advisory"], "source": "security@qnapsecurity.com.tw"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-787"}]}, {"type": "Secondary", "source": "security@qnapsecurity.com.tw", "description": [{"lang": "en", "value": "CWE-120"}]}], "descriptions": [{"lang": "en", "value": "A stack buffer overflow vulnerability has been reported to affect QNAP device running QVR Elite, QVR Pro, QVR Guard. If exploited, this vulnerability allows attackers to execute arbitrary code. We have already fixed this vulnerability in the following versions of QVR Elite, QVR Pro, QVR Guard: QuTS hero h5.0.0: QVR Elite 2.1.4.0 (2021/12/06) and later QuTS hero h4.5.4: QVR Elite 2.1.4.0 (2021/12/06) and later QTS 5.0.0: QVR Elite 2.1.4.0 (2021/12/06) and later QTS 4.5.4: QVR Elite 2.1.4.0 (2021/12/06) and later QTS 4.5.4: QVR Pro 2.1.3.0 (2021/12/06) and later QTS 5.0.0: QVR Pro 2.1.3.0 (2021/12/06) and later QTS 4.5.4: QVR Guard 2.1.3.0 (2021/12/06) and later QTS 5.0.0: QVR Guard 2.1.3.0 (2021/12/06) and later"}, {"lang": "es", "value": "Se ha informado de una vulnerabilidad de desbordamiento del b\u00fafer de la pila que afecta al dispositivo de QNAP que ejecuta QVR Elite, QVR Pro, QVR Guard. Si es explotado, esta vulnerabilidad permite a atacantes ejecutar c\u00f3digo arbitrario. Ya hemos corregido esta vulnerabilidad en las siguientes versiones de QVR Elite, QVR Pro, QVR Guard: QuTS hero h5.0.0: QVR Elite 2.1.4.0 (06/12/2021) y posteriores QuTS hero h4.5.4: QVR Elite 2.1.4.0 (06/12/2021) y posteriores QTS 5.0.0: QVR Elite 2.1.4.0 (06/12/2021) y posteriores QTS 4.5.4: QVR Elite 2.1.4.0 (06/12/2021) y posteriores QTS 4.5.4: QVR Pro 2.1.3.0 (06/12/2021) y posteriores QTS 5.0.0: QVR Pro 2.1.3.0 (06/12/2021) y posteriores QTS 4.5.4: QVR Guard 2.1.3.0 (06/12/2021) y posteriores QTS 5.0.0: QVR Guard 2.1.3.0 (06/12/2021) y posteriores"}], "lastModified": "2022-01-25T15:23:32.903", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:qnap:qvr_elite:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "02D8DDB2-C4C3-4F8E-A2D7-38FEDCD1CCB5", "versionEndExcluding": "2.1.4.0"}, {"criteria": "cpe:2.3:a:qnap:qvr_guard:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BC2A8376-494F-46C8-B54B-D19A4B07A21D", "versionEndExcluding": "2.1.3.0"}, {"criteria": "cpe:2.3:a:qnap:qvr_pro:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3044E23F-D5B1-4E6C-AD52-55A0D0AB356E", "versionEndExcluding": "2.1.3.0"}], "operator": "OR"}]}], "sourceIdentifier": "security@qnapsecurity.com.tw"}