Improper permissions preservation in Nextcloud Server 16.0.1 causes sharees to be able to reshare with write permissions when sharing the mount point of a share they received, as a public link.
Published 2020-02-04 20:15:13
Updated 2020-02-16 01:15:13
Source HackerOne
View at NVD,   CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2019-15621

0.14%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 50 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2019-15621

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
4.0
MEDIUM AV:N/AC:L/Au:S/C:N/I:P/A:N
8.0
2.9
NIST
6.5
MEDIUM CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
2.8
3.6
NIST

CWE ids for CVE-2019-15621

  • 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)

References for CVE-2019-15621

Products affected by CVE-2019-15621

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