fkie_cve-2020-8294
Vulnerability from fkie_nvd
Published
2021-02-03 17:15
Modified
2024-11-21 05:38
Severity ?
Summary
A missing link validation in Nextcloud Server before 20.0.2, 19.0.5, 18.0.11 allows execution of a stored XSS attack using Internet Explorer when saving a 'javascript:' URL in markdown format.
References
| URL | Tags | ||
|---|---|---|---|
| support@hackerone.com | https://hackerone.com/reports/1023787 | Permissions Required, Third Party Advisory | |
| support@hackerone.com | https://nextcloud.com/security/advisory/?id=NC-SA-2021-002 | Vendor Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://hackerone.com/reports/1023787 | Permissions Required, Third Party Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://nextcloud.com/security/advisory/?id=NC-SA-2021-002 | Vendor Advisory |
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| nextcloud | nextcloud_server | * | |
| nextcloud | nextcloud_server | * | |
| nextcloud | nextcloud_server | * |
{
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*",
"matchCriteriaId": "44D57333-C4F0-482B-92CB-91B8095733D0",
"versionEndExcluding": "18.0.11",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*",
"matchCriteriaId": "901AE378-7B1A-4D32-86FB-01971AAF0F48",
"versionEndExcluding": "19.0.5",
"versionStartIncluding": "19.0.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*",
"matchCriteriaId": "715B9373-BCF9-4069-8C51-7714648C27E8",
"versionEndExcluding": "20.0.2",
"versionStartIncluding": "20.0.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A missing link validation in Nextcloud Server before 20.0.2, 19.0.5, 18.0.11 allows execution of a stored XSS attack using Internet Explorer when saving a \u0027javascript:\u0027 URL in markdown format."
},
{
"lang": "es",
"value": "Una falta comprobaci\u00f3n de enlace en Nextcloud Server versiones anteriores a 20.0.2, 19.0.5, 18.0.11, permite una ejecuci\u00f3n de un ataque de tipo XSS almacenado usando Internet Explorer cuando se guarda una URL \"javascript:\" en formato markdown"
}
],
"id": "CVE-2020-8294",
"lastModified": "2024-11-21T05:38:40.657",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "LOW",
"cvssData": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "SINGLE",
"availabilityImpact": "NONE",
"baseScore": 3.5,
"confidentialityImpact": "NONE",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:M/Au:S/C:N/I:P/A:N",
"version": "2.0"
},
"exploitabilityScore": 6.8,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": true
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.4,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
"version": "3.1"
},
"exploitabilityScore": 2.3,
"impactScore": 2.7,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2021-02-03T17:15:16.293",
"references": [
{
"source": "support@hackerone.com",
"tags": [
"Permissions Required",
"Third Party Advisory"
],
"url": "https://hackerone.com/reports/1023787"
},
{
"source": "support@hackerone.com",
"tags": [
"Vendor Advisory"
],
"url": "https://nextcloud.com/security/advisory/?id=NC-SA-2021-002"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Permissions Required",
"Third Party Advisory"
],
"url": "https://hackerone.com/reports/1023787"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "https://nextcloud.com/security/advisory/?id=NC-SA-2021-002"
}
],
"sourceIdentifier": "support@hackerone.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-79"
}
],
"source": "support@hackerone.com",
"type": "Secondary"
},
{
"description": [
{
"lang": "en",
"value": "CWE-79"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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