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{
"Title": "Permission increase on re-sharing via OCS API",
"Timestamp": 1486290968,
"Risk": 2,
"CVSS3": {
"score": 5.4,
"vector": "AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"
},
"CWE": {
"id": 275,
"name": "Permission Issues"
},
"HackerOne": 169680,
"Affected":[
{
"Version":"10.0.2",
"CVE":"CVE-2017-0883",
"Operator":"<"
},
{
"Version":"9.0.55",
"CVE":"CVE-2017-0883",
"Operator":"<"
}
],
"Description":"A permission related issue within the OCS sharing API allowed an authenticated adversary to reshare shared files with an increasing permission set. This may allow an attacker to edit files in a share despite having only a 'read' permission set.Note that this only affects folders and files that the adversary has at least read-only permissions for.",
"ActionTaken": "The permissions are now properly checked on the OCS endpoint.",
"Acknowledgment":[
{
"Name": "secator",
"Email": "info@secator.com",
"Website": "https://secator.com/",
"Reason": "Vulnerability discovery and disclosure."
}
],
"Resolution": "It is recommended that all instances are upgraded to Nextcloud 9.0.55 or 10.0.2."
}
|
