CVE-2021-41239
Nextcloud User Status API Information Disclosure Vulnerability
Description
Nextcloud server is a self hosted system designed to provide cloud style services. In affected versions the User Status API did not consider the user enumeration settings by the administrator. This allowed a user to enumerate other users on the instance, even when user listings where disabled. It is recommended that the Nextcloud Server is upgraded to 20.0.14, 21.0.6 or 22.2.1. There are no known workarounds.
INFO
Published Date :
March 8, 2022, 6:15 p.m.
Last Modified :
Oct. 24, 2022, 4:42 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
1.4
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-2021-41239.
| URL | Resource |
|---|---|
| https://github.com/nextcloud/security-advisories/security/advisories/GHSA-g722-cm3h-8wrx | Issue Tracking Third Party Advisory |
| https://github.com/nextcloud/server/issues/27122 | Issue Tracking Patch Third Party Advisory |
| https://github.com/nextcloud/server/pull/29260 | Patch 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-2021-41239 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-41239 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.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Oct. 24, 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 Added CWE NIST CWE-862 -
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]
Mar. 14, 2022
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:N/A:N) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Changed Reference Type https://github.com/nextcloud/security-advisories/security/advisories/GHSA-g722-cm3h-8wrx No Types Assigned https://github.com/nextcloud/security-advisories/security/advisories/GHSA-g722-cm3h-8wrx Issue Tracking, Third Party Advisory Changed Reference Type https://github.com/nextcloud/server/issues/27122 No Types Assigned https://github.com/nextcloud/server/issues/27122 Issue Tracking, Patch, Third Party Advisory Changed Reference Type https://github.com/nextcloud/server/pull/29260 No Types Assigned https://github.com/nextcloud/server/pull/29260 Patch, Third Party Advisory Added CPE Configuration OR *cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:* versions up to (excluding) 20.0.14 *cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:* versions from (including) 21.0.0 up to (excluding) 21.0.6 *cpe:2.3:a:nextcloud:nextcloud_server:22.2.0:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-41239 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-2021-41239
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.12 }} 0.01%
score
0.47064
percentile