VAR-202103-1086
Vulnerability from variot - Updated: 2023-12-18 13:42Western Digital My Cloud OS 5 devices before 5.10.122 mishandle Symbolic Link Following on SMB and AFP shares. This can lead to code execution and information disclosure (by reading local files). This vulnerability allows remote attackers to disclose sensitive information on affected installations of Western Digital MyCloud PR4100. Authentication is not required to exploit this vulnerability.The specific flaw exists within the SMB and AFP services. By creating a symbolic link, an attacker can abuse the service to read arbitrary files. An attacker can leverage this vulnerability to disclose information in the context of the service account. Western Digital My Cloud is a personal cloud storage device of Western Digital Corporation
Show details on source website{
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/VARIoTentry#",
"affected_products": {
"@id": "https://www.variotdbs.pl/ref/affected_products"
},
"configurations": {
"@id": "https://www.variotdbs.pl/ref/configurations"
},
"credits": {
"@id": "https://www.variotdbs.pl/ref/credits"
},
"cvss": {
"@id": "https://www.variotdbs.pl/ref/cvss/"
},
"description": {
"@id": "https://www.variotdbs.pl/ref/description/"
},
"exploit_availability": {
"@id": "https://www.variotdbs.pl/ref/exploit_availability/"
},
"external_ids": {
"@id": "https://www.variotdbs.pl/ref/external_ids/"
},
"iot": {
"@id": "https://www.variotdbs.pl/ref/iot/"
},
"iot_taxonomy": {
"@id": "https://www.variotdbs.pl/ref/iot_taxonomy/"
},
"patch": {
"@id": "https://www.variotdbs.pl/ref/patch/"
},
"problemtype_data": {
"@id": "https://www.variotdbs.pl/ref/problemtype_data/"
},
"references": {
"@id": "https://www.variotdbs.pl/ref/references/"
},
"sources": {
"@id": "https://www.variotdbs.pl/ref/sources/"
},
"sources_release_date": {
"@id": "https://www.variotdbs.pl/ref/sources_release_date/"
},
"sources_update_date": {
"@id": "https://www.variotdbs.pl/ref/sources_update_date/"
},
"threat_type": {
"@id": "https://www.variotdbs.pl/ref/threat_type/"
},
"title": {
"@id": "https://www.variotdbs.pl/ref/title/"
},
"type": {
"@id": "https://www.variotdbs.pl/ref/type/"
}
},
"@id": "https://www.variotdbs.pl/vuln/VAR-202103-1086",
"affected_products": {
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/affected_products#",
"data": {
"@container": "@list"
},
"sources": {
"@container": "@list",
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/sources#"
},
"@id": "https://www.variotdbs.pl/ref/sources"
}
},
"data": [
{
"model": "my cloud os",
"scope": "lt",
"trust": 1.0,
"vendor": "westerndigital",
"version": "5.10.122"
},
{
"model": "my cloud os 5",
"scope": "eq",
"trust": 0.8,
"vendor": "western digital",
"version": "my cloud os 5 firmware 5.10.122"
},
{
"model": "my cloud os 5",
"scope": "eq",
"trust": 0.8,
"vendor": "western digital",
"version": null
},
{
"model": "mycloud pr4100",
"scope": null,
"trust": 0.7,
"vendor": "western digital",
"version": null
},
{
"model": "digital my cloud os",
"scope": "eq",
"trust": 0.6,
"vendor": "western",
"version": "5\u003c5.10.122"
}
],
"sources": [
{
"db": "ZDI",
"id": "ZDI-21-277"
},
{
"db": "CNVD",
"id": "CNVD-2022-06495"
},
{
"db": "JVNDB",
"id": "JVNDB-2021-004443"
},
{
"db": "NVD",
"id": "CVE-2021-3310"
}
]
},
"configurations": {
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/configurations#",
"children": {
"@container": "@list"
},
"cpe_match": {
"@container": "@list"
},
"data": {
"@container": "@list"
},
"nodes": {
"@container": "@list"
}
},
"data": [
{
"CVE_data_version": "4.0",
"nodes": [
{
"children": [
{
"children": [],
"cpe_match": [
{
"cpe23Uri": "cpe:2.3:o:westerndigital:my_cloud_os:*:*:*:*:*:*:*:*",
"cpe_name": [],
"versionEndExcluding": "5.10.122",
"vulnerable": true
}
],
"operator": "OR"
},
{
"children": [],
"cpe_match": [
{
"cpe23Uri": "cpe:2.3:h:westerndigital:my_cloud_dl2100:-:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": false
},
{
"cpe23Uri": "cpe:2.3:h:westerndigital:my_cloud_dl4100:-:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": false
},
{
"cpe23Uri": "cpe:2.3:h:westerndigital:my_cloud_ex2100:-:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": false
},
{
"cpe23Uri": "cpe:2.3:h:westerndigital:my_cloud_ex2_ultra:-:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": false
},
{
"cpe23Uri": "cpe:2.3:h:westerndigital:my_cloud_ex4100:-:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": false
},
{
"cpe23Uri": "cpe:2.3:h:westerndigital:my_cloud_mirror_gen_2:-:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": false
},
{
"cpe23Uri": "cpe:2.3:h:westerndigital:my_cloud_pr2100:-:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": false
},
{
"cpe23Uri": "cpe:2.3:h:westerndigital:my_cloud_pr4100:-:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": false
}
],
"operator": "OR"
}
],
"cpe_match": [],
"operator": "AND"
}
]
}
],
"sources": [
{
"db": "NVD",
"id": "CVE-2021-3310"
}
]
},
"credits": {
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/credits#",
"sources": {
"@container": "@list",
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/sources#"
}
}
},
"data": "Chris Hernandez",
"sources": [
{
"db": "ZDI",
"id": "ZDI-21-277"
}
],
"trust": 0.7
},
"cve": "CVE-2021-3310",
"cvss": {
"@context": {
"cvssV2": {
"@container": "@list",
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/cvss/cvssV2#"
},
"@id": "https://www.variotdbs.pl/ref/cvss/cvssV2"
},
"cvssV3": {
"@container": "@list",
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/cvss/cvssV3#"
},
"@id": "https://www.variotdbs.pl/ref/cvss/cvssV3/"
},
"severity": {
"@container": "@list",
"@context": {
"@vocab": "https://www.variotdbs.pl/cvss/severity#"
},
"@id": "https://www.variotdbs.pl/ref/cvss/severity"
},
"sources": {
"@container": "@list",
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/sources#"
},
"@id": "https://www.variotdbs.pl/ref/sources"
}
},
"data": [
{
"cvssV2": [
{
"acInsufInfo": false,
"accessComplexity": "LOW",
"accessVector": "LOCAL",
"authentication": "NONE",
"author": "NVD",
"availabilityImpact": "PARTIAL",
"baseScore": 4.6,
"confidentialityImpact": "PARTIAL",
"exploitabilityScore": 3.9,
"impactScore": 6.4,
"integrityImpact": "PARTIAL",
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"severity": "MEDIUM",
"trust": 1.0,
"userInteractionRequired": false,
"vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P",
"version": "2.0"
},
{
"acInsufInfo": null,
"accessComplexity": "Low",
"accessVector": "Local",
"authentication": "None",
"author": "NVD",
"availabilityImpact": "Partial",
"baseScore": 4.6,
"confidentialityImpact": "Partial",
"exploitabilityScore": null,
"id": "CVE-2021-3310",
"impactScore": null,
"integrityImpact": "Partial",
"obtainAllPrivilege": null,
"obtainOtherPrivilege": null,
"obtainUserPrivilege": null,
"severity": "Medium",
"trust": 0.9,
"userInteractionRequired": null,
"vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P",
"version": "2.0"
},
{
"accessComplexity": "LOW",
"accessVector": "LOCAL",
"authentication": "NONE",
"author": "CNVD",
"availabilityImpact": "PARTIAL",
"baseScore": 4.6,
"confidentialityImpact": "PARTIAL",
"exploitabilityScore": 3.9,
"id": "CNVD-2022-06495",
"impactScore": 6.4,
"integrityImpact": "PARTIAL",
"severity": "MEDIUM",
"trust": 0.6,
"vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P",
"version": "2.0"
}
],
"cvssV3": [
{
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"author": "NVD",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"exploitabilityScore": 1.8,
"impactScore": 5.9,
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"trust": 1.0,
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
{
"attackComplexity": "Low",
"attackVector": "Local",
"author": "NVD",
"availabilityImpact": "High",
"baseScore": 7.8,
"baseSeverity": "High",
"confidentialityImpact": "High",
"exploitabilityScore": null,
"id": "CVE-2021-3310",
"impactScore": null,
"integrityImpact": "High",
"privilegesRequired": "Low",
"scope": "Unchanged",
"trust": 0.8,
"userInteraction": "None",
"vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.0"
},
{
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"author": "ZDI",
"availabilityImpact": "NONE",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"exploitabilityScore": 3.9,
"id": "CVE-2021-3310",
"impactScore": 3.6,
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"trust": 0.7,
"userInteraction": "NONE",
"vectorString": "AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"version": "3.0"
}
],
"severity": [
{
"author": "NVD",
"id": "CVE-2021-3310",
"trust": 1.8,
"value": "HIGH"
},
{
"author": "ZDI",
"id": "CVE-2021-3310",
"trust": 0.7,
"value": "HIGH"
},
{
"author": "CNVD",
"id": "CNVD-2022-06495",
"trust": 0.6,
"value": "MEDIUM"
},
{
"author": "CNNVD",
"id": "CNNVD-202103-759",
"trust": 0.6,
"value": "HIGH"
},
{
"author": "VULMON",
"id": "CVE-2021-3310",
"trust": 0.1,
"value": "MEDIUM"
}
]
}
],
"sources": [
{
"db": "ZDI",
"id": "ZDI-21-277"
},
{
"db": "CNVD",
"id": "CNVD-2022-06495"
},
{
"db": "VULMON",
"id": "CVE-2021-3310"
},
{
"db": "JVNDB",
"id": "JVNDB-2021-004443"
},
{
"db": "NVD",
"id": "CVE-2021-3310"
},
{
"db": "CNNVD",
"id": "CNNVD-202103-759"
}
]
},
"description": {
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/description#",
"sources": {
"@container": "@list",
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/sources#"
}
}
},
"data": "Western Digital My Cloud OS 5 devices before 5.10.122 mishandle Symbolic Link Following on SMB and AFP shares. This can lead to code execution and information disclosure (by reading local files). This vulnerability allows remote attackers to disclose sensitive information on affected installations of Western Digital MyCloud PR4100. Authentication is not required to exploit this vulnerability.The specific flaw exists within the SMB and AFP services. By creating a symbolic link, an attacker can abuse the service to read arbitrary files. An attacker can leverage this vulnerability to disclose information in the context of the service account. Western Digital My Cloud is a personal cloud storage device of Western Digital Corporation",
"sources": [
{
"db": "NVD",
"id": "CVE-2021-3310"
},
{
"db": "JVNDB",
"id": "JVNDB-2021-004443"
},
{
"db": "ZDI",
"id": "ZDI-21-277"
},
{
"db": "CNVD",
"id": "CNVD-2022-06495"
},
{
"db": "VULMON",
"id": "CVE-2021-3310"
}
],
"trust": 2.88
},
"external_ids": {
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/external_ids#",
"data": {
"@container": "@list"
},
"sources": {
"@container": "@list",
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/sources#"
}
}
},
"data": [
{
"db": "NVD",
"id": "CVE-2021-3310",
"trust": 3.8
},
{
"db": "ZDI",
"id": "ZDI-21-277",
"trust": 3.2
},
{
"db": "JVNDB",
"id": "JVNDB-2021-004443",
"trust": 0.8
},
{
"db": "ZDI_CAN",
"id": "ZDI-CAN-12455",
"trust": 0.7
},
{
"db": "CNVD",
"id": "CNVD-2022-06495",
"trust": 0.6
},
{
"db": "CNNVD",
"id": "CNNVD-202103-759",
"trust": 0.6
},
{
"db": "VULMON",
"id": "CVE-2021-3310",
"trust": 0.1
}
],
"sources": [
{
"db": "ZDI",
"id": "ZDI-21-277"
},
{
"db": "CNVD",
"id": "CNVD-2022-06495"
},
{
"db": "VULMON",
"id": "CVE-2021-3310"
},
{
"db": "JVNDB",
"id": "JVNDB-2021-004443"
},
{
"db": "NVD",
"id": "CVE-2021-3310"
},
{
"db": "CNNVD",
"id": "CNNVD-202103-759"
}
]
},
"id": "VAR-202103-1086",
"iot": {
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/iot#",
"sources": {
"@container": "@list",
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/sources#"
}
}
},
"data": true,
"sources": [
{
"db": "CNVD",
"id": "CNVD-2022-06495"
}
],
"trust": 1.45714287
},
"iot_taxonomy": {
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/iot_taxonomy#",
"data": {
"@container": "@list"
},
"sources": {
"@container": "@list",
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/sources#"
}
}
},
"data": [
{
"category": [
"Network device"
],
"sub_category": null,
"trust": 0.6
}
],
"sources": [
{
"db": "CNVD",
"id": "CNVD-2022-06495"
}
]
},
"last_update_date": "2023-12-18T13:42:38.971000Z",
"patch": {
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/patch#",
"data": {
"@container": "@list"
},
"sources": {
"@container": "@list",
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/sources#"
}
}
},
"data": [
{
"title": "WDC-21002",
"trust": 0.8,
"url": "https://www.westerndigital.com/support/product-security/wdc-21002-my-cloud-firmware-version-5-10-122"
},
{
"title": "Western Digital has issued an update to correct this vulnerability.",
"trust": 0.7,
"url": "https://www.westerndigital.com/support/productsecurity/wdc-21002-my-cloud-firmware-version-5-10-122"
},
{
"title": "Patch for Western Digital My Cloud OS 5 Backlink Vulnerability",
"trust": 0.6,
"url": "https://www.cnvd.org.cn/patchinfo/show/315876"
},
{
"title": "Western Digital My Cloud Post-link vulnerability fixes",
"trust": 0.6,
"url": "http://www.cnnvd.org.cn/web/xxk/bdxqbyid.tag?id=144474"
},
{
"title": "PoC",
"trust": 0.1,
"url": "https://github.com/jonathan-elias/poc "
}
],
"sources": [
{
"db": "ZDI",
"id": "ZDI-21-277"
},
{
"db": "CNVD",
"id": "CNVD-2022-06495"
},
{
"db": "VULMON",
"id": "CVE-2021-3310"
},
{
"db": "JVNDB",
"id": "JVNDB-2021-004443"
},
{
"db": "CNNVD",
"id": "CNNVD-202103-759"
}
]
},
"problemtype_data": {
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/problemtype_data#",
"sources": {
"@container": "@list",
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/sources#"
}
}
},
"data": [
{
"problemtype": "CWE-59",
"trust": 1.0
},
{
"problemtype": "Link interpretation problem (CWE-59) [NVD Evaluation ]",
"trust": 0.8
}
],
"sources": [
{
"db": "JVNDB",
"id": "JVNDB-2021-004443"
},
{
"db": "NVD",
"id": "CVE-2021-3310"
}
]
},
"references": {
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/references#",
"data": {
"@container": "@list"
},
"sources": {
"@container": "@list",
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/sources#"
}
}
},
"data": [
{
"trust": 2.6,
"url": "https://www.zerodayinitiative.com/advisories/zdi-21-277/"
},
{
"trust": 2.4,
"url": "https://www.westerndigital.com/support/productsecurity/wdc-21002-my-cloud-firmware-version-5-10-122"
},
{
"trust": 2.0,
"url": "https://nvd.nist.gov/vuln/detail/cve-2021-3310"
},
{
"trust": 0.1,
"url": "https://cwe.mitre.org/data/definitions/59.html"
},
{
"trust": 0.1,
"url": "https://nvd.nist.gov"
}
],
"sources": [
{
"db": "ZDI",
"id": "ZDI-21-277"
},
{
"db": "CNVD",
"id": "CNVD-2022-06495"
},
{
"db": "VULMON",
"id": "CVE-2021-3310"
},
{
"db": "JVNDB",
"id": "JVNDB-2021-004443"
},
{
"db": "NVD",
"id": "CVE-2021-3310"
},
{
"db": "CNNVD",
"id": "CNNVD-202103-759"
}
]
},
"sources": {
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/sources#",
"data": {
"@container": "@list"
}
},
"data": [
{
"db": "ZDI",
"id": "ZDI-21-277"
},
{
"db": "CNVD",
"id": "CNVD-2022-06495"
},
{
"db": "VULMON",
"id": "CVE-2021-3310"
},
{
"db": "JVNDB",
"id": "JVNDB-2021-004443"
},
{
"db": "NVD",
"id": "CVE-2021-3310"
},
{
"db": "CNNVD",
"id": "CNNVD-202103-759"
}
]
},
"sources_release_date": {
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/sources_release_date#",
"data": {
"@container": "@list"
}
},
"data": [
{
"date": "2021-03-11T00:00:00",
"db": "ZDI",
"id": "ZDI-21-277"
},
{
"date": "2022-01-25T00:00:00",
"db": "CNVD",
"id": "CNVD-2022-06495"
},
{
"date": "2021-03-10T00:00:00",
"db": "VULMON",
"id": "CVE-2021-3310"
},
{
"date": "2021-11-22T00:00:00",
"db": "JVNDB",
"id": "JVNDB-2021-004443"
},
{
"date": "2021-03-10T05:15:13.517000",
"db": "NVD",
"id": "CVE-2021-3310"
},
{
"date": "2021-03-10T00:00:00",
"db": "CNNVD",
"id": "CNNVD-202103-759"
}
]
},
"sources_update_date": {
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/sources_update_date#",
"data": {
"@container": "@list"
}
},
"data": [
{
"date": "2021-06-29T00:00:00",
"db": "ZDI",
"id": "ZDI-21-277"
},
{
"date": "2022-01-25T00:00:00",
"db": "CNVD",
"id": "CNVD-2022-06495"
},
{
"date": "2021-03-17T00:00:00",
"db": "VULMON",
"id": "CVE-2021-3310"
},
{
"date": "2021-11-22T08:38:00",
"db": "JVNDB",
"id": "JVNDB-2021-004443"
},
{
"date": "2021-03-17T17:42:35.880000",
"db": "NVD",
"id": "CVE-2021-3310"
},
{
"date": "2021-03-19T00:00:00",
"db": "CNNVD",
"id": "CNNVD-202103-759"
}
]
},
"threat_type": {
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/threat_type#",
"sources": {
"@container": "@list",
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/sources#"
}
}
},
"data": "local",
"sources": [
{
"db": "CNNVD",
"id": "CNNVD-202103-759"
}
],
"trust": 0.6
},
"title": {
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/title#",
"sources": {
"@container": "@list",
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/sources#"
}
}
},
"data": "Western\u00a0Digital\u00a0My\u00a0Cloud\u00a0OS\u00a05\u00a0 Link interpretation vulnerability in device",
"sources": [
{
"db": "JVNDB",
"id": "JVNDB-2021-004443"
}
],
"trust": 0.8
},
"type": {
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/type#",
"sources": {
"@container": "@list",
"@context": {
"@vocab": "https://www.variotdbs.pl/ref/sources#"
}
}
},
"data": "post link",
"sources": [
{
"db": "CNNVD",
"id": "CNNVD-202103-759"
}
],
"trust": 0.6
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
Loading…