CVE-2020-8150 (GCVE-0-2020-8150)
Vulnerability from cvelistv5 – Published: 2020-11-09 14:19 – Updated: 2024-08-04 09:48
VLAI
Summary
A cryptographic issue in Nextcloud Server 19.0.1 allowed an attacker to downgrade the encryption scheme and break the integrity of encrypted files.
Severity
4.1 (Medium)
CWE
- CWE-310 - Cryptographic Issues - Generic (CWE-310)
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://hackerone.com/reports/742588 | x_refsource_MISC |
| https://nextcloud.com/security/advisory/?id=NC-SA… | x_refsource_MISC |
| http://seclists.org/fulldisclosure/2020/Dec/55 | mailing-listx_refsource_FULLDISC |
| http://seclists.org/fulldisclosure/2020/Dec/57 | mailing-listx_refsource_FULLDISC |
| http://seclists.org/fulldisclosure/2020/Dec/58 | mailing-listx_refsource_FULLDISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | Nextcloud Server |
Affected:
19.0.2
|
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-04T09:48:25.666Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://hackerone.com/reports/742588"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://nextcloud.com/security/advisory/?id=NC-SA-2020-039"
},
{
"name": "20201225 Re: [FD] CVE-2020-8150 - Remote Code Execution as SYSTEM/root via Backblaze",
"tags": [
"mailing-list",
"x_refsource_FULLDISC",
"x_transferred"
],
"url": "http://seclists.org/fulldisclosure/2020/Dec/55"
},
{
"name": "20201229 Re: [FD] CVE-2020-8150 - Remote Code Execution as SYSTEM/root via Backblaze",
"tags": [
"mailing-list",
"x_refsource_FULLDISC",
"x_transferred"
],
"url": "http://seclists.org/fulldisclosure/2020/Dec/57"
},
{
"name": "20201229 Re: CVE-2020-8150 - Remote Code Execution as SYSTEM/root via Backblaze",
"tags": [
"mailing-list",
"x_refsource_FULLDISC",
"x_transferred"
],
"url": "http://seclists.org/fulldisclosure/2020/Dec/58"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"product": "Nextcloud Server",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "19.0.2"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A cryptographic issue in Nextcloud Server 19.0.1 allowed an attacker to downgrade the encryption scheme and break the integrity of encrypted files."
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-310",
"description": "Cryptographic Issues - Generic (CWE-310)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2020-12-29T10:06:12.000Z",
"orgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1",
"shortName": "hackerone"
},
"references": [
{
"tags": [
"x_refsource_MISC"
],
"url": "https://hackerone.com/reports/742588"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://nextcloud.com/security/advisory/?id=NC-SA-2020-039"
},
{
"name": "20201225 Re: [FD] CVE-2020-8150 - Remote Code Execution as SYSTEM/root via Backblaze",
"tags": [
"mailing-list",
"x_refsource_FULLDISC"
],
"url": "http://seclists.org/fulldisclosure/2020/Dec/55"
},
{
"name": "20201229 Re: [FD] CVE-2020-8150 - Remote Code Execution as SYSTEM/root via Backblaze",
"tags": [
"mailing-list",
"x_refsource_FULLDISC"
],
"url": "http://seclists.org/fulldisclosure/2020/Dec/57"
},
{
"name": "20201229 Re: CVE-2020-8150 - Remote Code Execution as SYSTEM/root via Backblaze",
"tags": [
"mailing-list",
"x_refsource_FULLDISC"
],
"url": "http://seclists.org/fulldisclosure/2020/Dec/58"
}
],
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "support@hackerone.com",
"ID": "CVE-2020-8150",
"STATE": "PUBLIC"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "Nextcloud Server",
"version": {
"version_data": [
{
"version_value": "19.0.2"
}
]
}
}
]
},
"vendor_name": "n/a"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "A cryptographic issue in Nextcloud Server 19.0.1 allowed an attacker to downgrade the encryption scheme and break the integrity of encrypted files."
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "Cryptographic Issues - Generic (CWE-310)"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://hackerone.com/reports/742588",
"refsource": "MISC",
"url": "https://hackerone.com/reports/742588"
},
{
"name": "https://nextcloud.com/security/advisory/?id=NC-SA-2020-039",
"refsource": "MISC",
"url": "https://nextcloud.com/security/advisory/?id=NC-SA-2020-039"
},
{
"name": "20201225 Re: [FD] CVE-2020-8150 - Remote Code Execution as SYSTEM/root via Backblaze",
"refsource": "FULLDISC",
"url": "http://seclists.org/fulldisclosure/2020/Dec/55"
},
{
"name": "20201229 Re: [FD] CVE-2020-8150 - Remote Code Execution as SYSTEM/root via Backblaze",
"refsource": "FULLDISC",
"url": "http://seclists.org/fulldisclosure/2020/Dec/57"
},
{
"name": "20201229 Re: CVE-2020-8150 - Remote Code Execution as SYSTEM/root via Backblaze",
"refsource": "FULLDISC",
"url": "http://seclists.org/fulldisclosure/2020/Dec/58"
}
]
}
}
}
},
"cveMetadata": {
"assignerOrgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1",
"assignerShortName": "hackerone",
"cveId": "CVE-2020-8150",
"datePublished": "2020-11-09T14:19:42.000Z",
"dateReserved": "2020-01-28T00:00:00.000Z",
"dateUpdated": "2024-08-04T09:48:25.666Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2020-8150",
"date": "2026-06-04",
"epss": "0.00036",
"percentile": "0.10919"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2020-8150\",\"sourceIdentifier\":\"support@hackerone.com\",\"published\":\"2020-11-09T15:15:13.443\",\"lastModified\":\"2024-11-21T05:38:23.413\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A cryptographic issue in Nextcloud Server 19.0.1 allowed an attacker to downgrade the encryption scheme and break the integrity of encrypted files.\"},{\"lang\":\"es\",\"value\":\"Un problema criptogr\u00e1fico en Nextcloud Server versi\u00f3n 19.0.1, permiti\u00f3 a un atacante degradar el esquema de cifrado y romper la integridad de los archivos cifrados\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N\",\"baseScore\":4.1,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"HIGH\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":0.5,\"impactScore\":3.6}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:L/AC:M/Au:N/C:N/I:P/A:N\",\"baseScore\":1.9,\"accessVector\":\"LOCAL\",\"accessComplexity\":\"MEDIUM\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"NONE\"},\"baseSeverity\":\"LOW\",\"exploitabilityScore\":3.4,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"support@hackerone.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-310\"}]},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-311\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"19.0.2\",\"matchCriteriaId\":\"DC2E71AB-4078-49DD-B276-7CC5990A792B\"}]}]}],\"references\":[{\"url\":\"http://seclists.org/fulldisclosure/2020/Dec/55\",\"source\":\"support@hackerone.com\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"http://seclists.org/fulldisclosure/2020/Dec/57\",\"source\":\"support@hackerone.com\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"http://seclists.org/fulldisclosure/2020/Dec/58\",\"source\":\"support@hackerone.com\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://hackerone.com/reports/742588\",\"source\":\"support@hackerone.com\",\"tags\":[\"Exploit\",\"Third Party Advisory\"]},{\"url\":\"https://nextcloud.com/security/advisory/?id=NC-SA-2020-039\",\"source\":\"support@hackerone.com\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"http://seclists.org/fulldisclosure/2020/Dec/55\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"http://seclists.org/fulldisclosure/2020/Dec/57\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"http://seclists.org/fulldisclosure/2020/Dec/58\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://hackerone.com/reports/742588\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Exploit\",\"Third Party Advisory\"]},{\"url\":\"https://nextcloud.com/security/advisory/?id=NC-SA-2020-039\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]}]}}"
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
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…