CVE-2021-32656
Published Jun 1, 2021
Last updated 2 years ago
Overview
- Description
- Nextcloud Server is a Nextcloud package that handles data storage. A vulnerability in federated share exists in versions prior to 19.0.11, 20.0.10, and 21.0.2. An attacker can gain access to basic information about users of a server by accessing a public link that a legitimate server user added as a federated share. This happens because Nextcloud supports sharing registered users with other Nextcloud servers, which can be done automatically when selecting the "Add server automatically once a federated share was created successfully" setting. The vulnerability is patched in versions 19.0.11, 20.0.10, and 21.0.2 As a workaround, disable "Add server automatically once a federated share was created successfully" in the Nextcloud settings.
- Source
- security-advisories@github.com
- NVD status
- Analyzed
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 8.6
- Impact score
- 4
- Exploitability score
- 3.9
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
- Severity
- HIGH
CVSS 2.0
- Type
- Primary
- Base score
- 5
- Impact score
- 2.9
- Exploitability score
- 10
- Vector string
- AV:N/AC:L/Au:N/C:P/I:N/A:N
Weaknesses
- security-advisories@github.com
- CWE-284
- nvd@nist.gov
- NVD-CWE-Other
Social media
- Hype score
- Not currently trending
Configurations
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{
"nodes": [
{
"negate": false,
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"matchCriteriaId": "90D08DF1-6127-40C6-834D-CEF965C1F55D",
"versionEndExcluding": "19.0.11"
},
{
"criteria": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*",
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"matchCriteriaId": "5EA550E2-F2F1-4AB8-A713-6EEB5E420CB5",
"versionEndExcluding": "20.0.10",
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},
{
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"operator": "OR"
}
]
}
]