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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2021-32802 Detail

Description

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`.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://docs.nextcloud.com/server/21/admin_manual/configuration_files/previews_configuration.html#disabling-previews CVE, GitHub, Inc. Vendor Advisory 
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-m682-v4g9-wrq7 CVE, GitHub, Inc. Mitigation  Third Party Advisory 
https://hackerone.com/reports/1261413 CVE, GitHub, Inc. Permissions Required  Third Party Advisory 
https://security.gentoo.org/glsa/202208-17 CVE, GitHub, Inc. Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-829 Inclusion of Functionality from Untrusted Control Sphere cwe source acceptance level NIST   GitHub, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

5 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-32802
NVD Published Date:
09/07/2021
NVD Last Modified:
11/21/2024
Source:
GitHub, Inc.