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CVE-2019-15621

Date: February 4, 2020

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.

Language: PHP

Severity Score

Related Resources (6)

https://hackerone.com/reports/619484
http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00019.html
http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00022.html
https://nvd.nist.gov/vuln/detail/CVE-2019-15621
https://nextcloud.com/security/advisory/?id=NC-SA-2020-012
https://www.mend.io/vulnerability-database/CVE-2019-15621

Severity Score

Weakness Type (CWE)

Improper Preservation of Permissions

CWE-281

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): HIGH
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): SINGLE
Confidentiality (C): NONE
Integrity (I): PARTIAL
Availability (A): NONE
Additional information:

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