CVE-2021-26569

Race Condition within a Thread vulnerability in iscsi_snapshot_comm_core in Synology DiskStation Manager (DSM) before 6.2.3-25426-3 allows remote attackers to execute arbitrary code via crafted web requests.

CVSS v3 9.8 CRITICAL
CVSS v2.0 6.8 MEDIUM

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

6.8^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 8.6 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://www.synology.com/security/advisory/Synology_SA_20_26	Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-338/	Third Party Advisory VDB Entry
https://www.synology.com/security/advisory/Synology_SA_20_26	Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-338/	Third Party Advisory VDB Entry

Configurations

Configuration 1 (hide)

cpe:2.3:a:synology:diskstation_manager:*:*:*:*:*:*:*:*

History

21 Nov 2024, 05:56

Type	Values Removed	Values Added
References	~~() https://www.synology.com/security/advisory/Synology_SA_20_26 - Vendor Advisory~~	() https://www.synology.com/security/advisory/Synology_SA_20_26 - Vendor Advisory
References	~~() https://www.zerodayinitiative.com/advisories/ZDI-21-338/ - Third Party Advisory, VDB Entry~~	() https://www.zerodayinitiative.com/advisories/ZDI-21-338/ - Third Party Advisory, VDB Entry
CVSS	v2 : ~~6.8~~ v3 : ~~8.1~~	v2 : 6.8 v3 : 9.8

Information

Published : 2021-03-12 07:15

Updated : 2024-11-21 05:56

NVD link : CVE-2021-26569

Mitre link : CVE-2021-26569

CVE.ORG link : CVE-2021-26569

JSON object : View

Products Affected

synology

diskstation_manager

CWE

CWE-366

Race Condition within a Thread

CWE-362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

{"id": "CVE-2021-26569", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 6.8, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "MEDIUM", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 6.4, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 8.6, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Secondary", "source": "security@synology.com", "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": "Primary", "source": "nvd@nist.gov", "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": "2021-03-12T07:15:12.437", "references": [{"url": "https://www.synology.com/security/advisory/Synology_SA_20_26", "tags": ["Vendor Advisory"], "source": "security@synology.com"}, {"url": "https://www.zerodayinitiative.com/advisories/ZDI-21-338/", "tags": ["Third Party Advisory", "VDB Entry"], "source": "security@synology.com"}, {"url": "https://www.synology.com/security/advisory/Synology_SA_20_26", "tags": ["Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://www.zerodayinitiative.com/advisories/ZDI-21-338/", "tags": ["Third Party Advisory", "VDB Entry"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "security@synology.com", "description": [{"lang": "en", "value": "CWE-366"}]}, {"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-362"}]}], "descriptions": [{"lang": "en", "value": "Race Condition within a Thread vulnerability in iscsi_snapshot_comm_core in Synology DiskStation Manager (DSM) before 6.2.3-25426-3 allows remote attackers to execute arbitrary code via crafted web requests."}, {"lang": "es", "value": "Una Condici\u00f3n de Carrera dentro de una vulnerabilidad de Subproceso en iscsi_snapshot_comm_core en Synology DiskStation Manager (DSM) versiones anteriores a 6.2.3-25426-3, permite a atacantes remotos ejecutar c\u00f3digo arbitrario por medio de peticiones web dise\u00f1adas"}], "lastModified": "2024-11-21T05:56:30.150", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:synology:diskstation_manager:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D3A47DA1-91A8-408B-9985-59C64DFF81DC", "versionEndExcluding": "6.2.3-25426-3"}], "operator": "OR"}]}], "sourceIdentifier": "security@synology.com"}