Nextcloud Server before 12.0.8 and 13.0.3 suffers from improper checks of dropped permissions for incoming shares allowing a user to still request previews for files it should not have access to.
Published 2018-07-05 16:29:00
Updated 2023-02-28 17:52:21
Source HackerOne
View at NVD,   CVE.org
Vulnerability category: BypassGain privilege

Exploit prediction scoring system (EPSS) score for CVE-2018-3762

0.05%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 21 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2018-3762

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
4.0
MEDIUM AV:N/AC:L/Au:S/C:P/I:N/A:N
8.0
2.9
NIST
4.3
MEDIUM CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
2.8
1.4
NIST

CWE ids for CVE-2018-3762

  • The product does not preserve permissions or incorrectly preserves permissions when copying, restoring, or sharing objects, which can cause them to have less restrictive permissions than intended.
    Assigned by: nvd@nist.gov (Primary)
  • The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
    Assigned by: support@hackerone.com (Secondary)

References for CVE-2018-3762

Products affected by CVE-2018-3762

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