CVE-2021-32689 (GCVE-0-2021-32689)
Vulnerability from cvelistv5
Published
2021-07-12 18:45
Modified
2024-08-03 23:25
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
Nextcloud Talk is a fully on-premises audio/video and chat communication service. In versions prior to 11.2.2, if a user was able to reuse an earlier used username, they could get access to any chat message sent to the previous user with this username. The issue was patched in versions 11.2.2 and 11.3.0. As a workaround, don't allow users to choose usernames themselves. This is the default behaviour of Nextcloud, but some user providers may allow doing so.
References
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Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| nextcloud | security-advisories |
Version: < 11.2.2 |
{
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"orgId": "af854a3a-2127-422b-91ae-364da2661108",
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"references": [
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"x_transferred"
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"url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-xv6f-344w-895c"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://github.com/nextcloud/spreed/pull/5633"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://hackerone.com/reports/1200700"
},
{
"tags": [
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"x_transferred"
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"url": "https://github.com/nextcloud/spreed/releases/tag/v11.2.2"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://github.com/nextcloud/spreed/releases/tag/v11.3.0"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"product": "security-advisories",
"vendor": "nextcloud",
"versions": [
{
"status": "affected",
"version": "\u003c 11.2.2"
}
]
}
],
"descriptions": [
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"lang": "en",
"value": "Nextcloud Talk is a fully on-premises audio/video and chat communication service. In versions prior to 11.2.2, if a user was able to reuse an earlier used username, they could get access to any chat message sent to the previous user with this username. The issue was patched in versions 11.2.2 and 11.3.0. As a workaround, don\u0027t allow users to choose usernames themselves. This is the default behaviour of Nextcloud, but some user providers may allow doing so."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 8.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
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"description": "CWE-708: Incorrect Ownership Assignment",
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"type": "CWE"
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},
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}
],
"providerMetadata": {
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"shortName": "GitHub_M"
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"references": [
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"tags": [
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"url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-xv6f-344w-895c"
},
{
"tags": [
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"url": "https://github.com/nextcloud/spreed/pull/5633"
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{
"tags": [
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"url": "https://hackerone.com/reports/1200700"
},
{
"tags": [
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],
"url": "https://github.com/nextcloud/spreed/releases/tag/v11.2.2"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/nextcloud/spreed/releases/tag/v11.3.0"
}
],
"source": {
"advisory": "GHSA-xv6f-344w-895c",
"discovery": "UNKNOWN"
},
"title": "Nextcloud Talk not properly disassociating users from chats after account deletion",
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "security-advisories@github.com",
"ID": "CVE-2021-32689",
"STATE": "PUBLIC",
"TITLE": "Nextcloud Talk not properly disassociating users from chats after account deletion"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "security-advisories",
"version": {
"version_data": [
{
"version_value": "\u003c 11.2.2"
}
]
}
}
]
},
"vendor_name": "nextcloud"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
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"value": "Nextcloud Talk is a fully on-premises audio/video and chat communication service. In versions prior to 11.2.2, if a user was able to reuse an earlier used username, they could get access to any chat message sent to the previous user with this username. The issue was patched in versions 11.2.2 and 11.3.0. As a workaround, don\u0027t allow users to choose usernames themselves. This is the default behaviour of Nextcloud, but some user providers may allow doing so."
}
]
},
"impact": {
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"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 8.1,
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"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
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}
},
"problemtype": {
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"description": [
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"value": "CWE-708: Incorrect Ownership Assignment"
}
]
},
{
"description": [
{
"lang": "eng",
"value": "CWE-200: Exposure of Sensitive Information to an Unauthorized Actor"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-xv6f-344w-895c",
"refsource": "CONFIRM",
"url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-xv6f-344w-895c"
},
{
"name": "https://github.com/nextcloud/spreed/pull/5633",
"refsource": "MISC",
"url": "https://github.com/nextcloud/spreed/pull/5633"
},
{
"name": "https://hackerone.com/reports/1200700",
"refsource": "MISC",
"url": "https://hackerone.com/reports/1200700"
},
{
"name": "https://github.com/nextcloud/spreed/releases/tag/v11.2.2",
"refsource": "MISC",
"url": "https://github.com/nextcloud/spreed/releases/tag/v11.2.2"
},
{
"name": "https://github.com/nextcloud/spreed/releases/tag/v11.3.0",
"refsource": "MISC",
"url": "https://github.com/nextcloud/spreed/releases/tag/v11.3.0"
}
]
},
"source": {
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"discovery": "UNKNOWN"
}
}
}
},
"cveMetadata": {
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"assignerShortName": "GitHub_M",
"cveId": "CVE-2021-32689",
"datePublished": "2021-07-12T18:45:15.000Z",
"dateReserved": "2021-05-12T00:00:00.000Z",
"dateUpdated": "2024-08-03T23:25:31.169Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
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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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