CVE-2021-32654
Nextcloud Server Federation File Share Privilege Escalation Vulnerability
Description
Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.11, 20.0.10, and 21.0.2, an attacker is able to receive write/read privileges on any Federated File Share. Since public links can be added as federated file share, this can also be exploited on any public link. Users can upgrade to patched versions (19.0.11, 20.0.10 or 21.0.2) or, as a workaround, disable federated file sharing.
INFO
Published Date :
June 1, 2021, 9:15 p.m.
Last Modified :
Nov. 21, 2024, 6:07 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.2
Exploitability Score :
3.9
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-32654.
| URL | Resource |
|---|---|
| https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jf9h-v24c-22g5 | Third Party Advisory |
| https://hackerone.com/reports/1170024 | Permissions Required Third Party Advisory |
| https://security.gentoo.org/glsa/202208-17 | Third Party Advisory |
| https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jf9h-v24c-22g5 | Third Party Advisory |
| https://hackerone.com/reports/1170024 | Permissions Required Third Party Advisory |
| https://security.gentoo.org/glsa/202208-17 | Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-32654 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-32654 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jf9h-v24c-22g5 Added Reference https://hackerone.com/reports/1170024 Added Reference https://security.gentoo.org/glsa/202208-17 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Oct. 26, 2022
Action Type Old Value New Value Changed Reference Type https://security.gentoo.org/glsa/202208-17 No Types Assigned https://security.gentoo.org/glsa/202208-17 Third Party Advisory -
CVE Modified by [email protected]
Aug. 11, 2022
Action Type Old Value New Value Added Reference https://security.gentoo.org/glsa/202208-17 [No Types Assigned] -
Initial Analysis by [email protected]
Jun. 14, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:N) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Changed Reference Type https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jf9h-v24c-22g5 No Types Assigned https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jf9h-v24c-22g5 Third Party Advisory Changed Reference Type https://hackerone.com/reports/1170024 No Types Assigned https://hackerone.com/reports/1170024 Permissions Required, Third Party Advisory Added CPE Configuration OR *cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:* versions up to (excluding) 19.0.11 *cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:* versions from (including) 20.0.0 up to (excluding) 20.0.10 *cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:* versions from (including) 21.0.0 up to (excluding) 21.0.2
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-32654 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-32654
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.18 }} 0.05%
score
0.55940
percentile