Nextcloud Server before 9.0.52 & ownCloud Server before 9.0.4 are not properly verifying edit check permissions on WebDAV copy actions. The WebDAV endpoint was not properly checking the permission on a WebDAV COPY action. This allowed an authenticated attacker with access to a read-only share to put new files in there. It was not possible to modify existing files.
{
"extracted_events": [
{
"introduced": "0"
},
{
"fixed": "9.0.52"
}
],
"cpe": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*",
"source": [
"CPE_RANGE",
"REFERENCES"
]
}{
"extracted_events": [
{
"introduced": "0"
},
{
"fixed": "9.0.4"
}
],
"cpe": "cpe:2.3:a:owncloud:owncloud:*:*:*:*:*:*:*:*",
"source": [
"CPE_RANGE",
"REFERENCES"
]
}