Improper Authorization Affecting nextcloud package, versions [,9.0.54)


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.12% (48th percentile)

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  • Snyk IDSNYK-UNMANAGED-NEXTCLOUD-2371446
  • published26 Jan 2022
  • disclosed28 Mar 2017
  • creditUnknown

Introduced: 28 Mar 2017

CVE-2016-9464  (opens in a new tab)
CWE-285  (opens in a new tab)

How to fix?

Upgrade nextcloud to version 9.0.54 or higher.

Overview

Affected versions of this package are vulnerable to Improper Authorization. Nextcloud Server before 9.0.54 and 10.0.0 suffers from an improper authorization check on removing shares. The Sharing Backend as implemented in Nextcloud does differentiate between shares to users and groups. In case of a received group share, users should be able to unshare the file to themselves but not to the whole group. The previous API implementation simply unshared the file to all users in the group.

CVSS Scores

version 3.1