security-advisories/server/nc-sa-2021-004.json

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{
"Title": "External storage credentials stored for wrong user",
"Timestamp": 1611572400,
"Risk": 1,
"CVSS3": {
"score": 8.7,
"vector": "AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N"
},
"CWE": {
"id": 284,
"name": "Improper Access Control - Generic"
},
"HackerOne": 1061591,
"Affected":[
{
"Version":"20.0.6",
"CVE":"CVE-2021-22877",
"Operator":"<"
}
],
"Description":"A missing user check in Nextcloud 20.0.5 and prior allowed to populate your own credentials for other users external storage configuration when they did not configure one yet.",
"ActionTaken": "The error has been fixed.",
"Acknowledgment":[
{
"Name": "Alexander Hofstätter",
"Company": "Hofstätter IT GmbH",
"Website": "https://hofstaetter.io",
"Reason": "Vulnerability discovery and disclosure."
}
],
"Resolution": "It is recommended that the Nextcloud Server is upgraded to 20.0.6."
}