CVE-2019-15621
First published: Tue Feb 04 2020(Updated: )
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.
Credit: support@hackerone.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Nextcloud Server | <14.0.13 | |
| Nextcloud Server | >=15.0.0<15.0.9 | |
| Nextcloud Server | >=16.0.0<16.0.2 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2019-15621?
CVE-2019-15621 has a medium severity level due to improper permissions allowing unauthorized reshare capabilities.
How do I fix CVE-2019-15621?
To fix CVE-2019-15621, upgrade your Nextcloud Server to version 16.0.2 or later.
What are the affected versions in CVE-2019-15621?
CVE-2019-15621 affects Nextcloud Server versions prior to 16.0.2, as well as versions 15.0.0 to 15.0.9 and 14.0.13 and earlier.
What type of vulnerability is CVE-2019-15621?
CVE-2019-15621 is classified as an improper permissions vulnerability.
Who is impacted by CVE-2019-15621?
Users of Nextcloud Server versions that are prior to the patched releases are impacted by CVE-2019-15621.
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- version/nextcloud server/16.0.0