CVE-2021-28809

An improper access control vulnerability has been reported to affect certain legacy versions of HBS 3. If exploited, this vulnerability allows attackers to compromise the security of the operating system.QNAP have already fixed this vulnerability in the following versions of HBS 3: QTS 4.3.6: HBS 3 v3.0.210507 and later QTS 4.3.4: HBS 3 v3.0.210506 and later QTS 4.3.3: HBS 3 v3.0.210506 and later

CVSS v3.0 9.8 CRITICAL
CVSS v2.0 10.0 HIGH

9.8^/10

CVSS v3.0 : 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

10.0^/10

CVSS v2.0 : HIGH

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

Exploitability : 10.0 / Impact : 10.0

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://www.qnap.com/en/security-advisory/qsa-21-19	Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-783/	Third Party Advisory VDB Entry

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Configurations

Configuration 1 (hide)

AND

cpe:2.3:a:qnap:hybrid_backup_sync:*:*:*:*:*:*:*:*

cpe:2.3:o:qnap:qts:4.3.6:-:*:*:*:*:*:*

Configuration 2 (hide)

AND

cpe:2.3:a:qnap:hybrid_backup_sync:*:*:*:*:*:*:*:*

cpe:2.3:o:qnap:qts:4.3.4:-:*:*:*:*:*:*

Configuration 3 (hide)

AND

cpe:2.3:a:qnap:hybrid_backup_sync:*:*:*:*:*:*:*:*

cpe:2.3:o:qnap:qts:4.3.3:-:*:*:*:*:*:*

Information

Published : 2021-07-08 01:15

Updated : 2021-07-12 09:37

NVD link : CVE-2021-28809

Mitre link : CVE-2021-28809

JSON object : View

CWE

CWE-306

Missing Authentication for Critical Function

CWE-284

Improper Access Control

CWE-749

Exposed Dangerous Method or Function

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Products Affected

qnap

qts
hybrid_backup_sync

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