10
CVE-2021-32802
- EPSS 2.25%
- Veröffentlicht 07.09.2021 22:15:08
- Zuletzt bearbeitet 21.11.2024 06:07:46
- Quelle security-advisories@github.com
- CVE-Watchlists
- Unerledigt
Preview generation used third-party library not suited for user-generated content in Nextcloud server
Preview generation used third-party library not suited for user-generated content
Nextcloud server is an open source, self hosted personal cloud. Nextcloud supports rendering image previews for user provided file content. For some image types, the Nextcloud server was invoking a third-party library that wasn't suited for untrusted user-supplied content. There are several security concerns with passing user-generated content to this library, such as Server-Side-Request-Forgery, file disclosure or potentially executing code on the system. The risk depends on your system configuration and the installed library version. It is recommended that the Nextcloud Server is upgraded to 20.0.12, 21.0.4 or 22.1.0. These versions do not use this library anymore. As a workaround users may disable previews by setting `enable_previews` to `false` in `config.php`.
Mögliche Gegenmaßnahme
Nextcloud Server: Disable previews by setting `enable_previews` to `false` in `config.php`. ([documentation](https://docs.nextcloud.com/server/21/admin_manual/configuration_files/previews_configuration.html#disabling-previews))
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Nextcloud ≫ Nextcloud Server Version < 20.0.12
Nextcloud ≫ Nextcloud Server Version >= 21.0.0 < 21.0.4
Nextcloud ≫ Nextcloud Server Version >= 22.0.0 < 22.1.0
VulnDex Vulnerability Enrichment
Diese Information steht angemeldeten Benutzern zur Verfügung. 
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SystemNextcloud
≫
Produkt
Nextcloud Server
Version
>= 0.0.0, < 20.0.12
Version
>= 21.0.0, < 21.0.4
Version
>= 22.1.0, < 22.1.0
| Typ | Quelle | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 2.25% | 0.843 |
| Quelle | Base Score | Exploit Score | Impact Score | Vector String |
|---|---|---|---|---|
| nvd@nist.gov | 9.8 | 3.9 | 5.9 |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
|
| nvd@nist.gov | 10 | 10 | 10 |
AV:N/AC:L/Au:N/C:C/I:C/A:C
|
| security-advisories@github.com | 9.3 | 3.9 | 4.7 |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:L
|
CWE-829 Inclusion of Functionality from Untrusted Control Sphere
The product imports, requires, or includes executable functionality (such as a library) from a source that is outside of the intended control sphere.