CVE-2021-32689
Nextcloud Talk Username Reuse Chat Message Exposure
Description
Nextcloud Talk is a fully on-premises audio/video and chat communication service. In versions prior to 11.2.2, if a user was able to reuse an earlier used username, they could get access to any chat message sent to the previous user with this username. The issue was patched in versions 11.2.2 and 11.3.0. As a workaround, don't allow users to choose usernames themselves. This is the default behaviour of Nextcloud, but some user providers may allow doing so.
INFO
Published Date :
July 12, 2021, 7:15 p.m.
Last Modified :
Nov. 21, 2024, 6:07 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.2
Exploitability Score :
2.8
Affected Products
The following products are affected by CVE-2021-32689
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
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-2021-32689.
| URL | Resource |
|---|---|
| https://github.com/nextcloud/security-advisories/security/advisories/GHSA-xv6f-344w-895c | Third Party Advisory |
| https://github.com/nextcloud/spreed/pull/5633 | Patch Third Party Advisory |
| https://github.com/nextcloud/spreed/releases/tag/v11.2.2 | Release Notes Third Party Advisory |
| https://github.com/nextcloud/spreed/releases/tag/v11.3.0 | Release Notes Third Party Advisory |
| https://hackerone.com/reports/1200700 | Permissions Required |
| https://github.com/nextcloud/security-advisories/security/advisories/GHSA-xv6f-344w-895c | Third Party Advisory |
| https://github.com/nextcloud/spreed/pull/5633 | Patch Third Party Advisory |
| https://github.com/nextcloud/spreed/releases/tag/v11.2.2 | Release Notes Third Party Advisory |
| https://github.com/nextcloud/spreed/releases/tag/v11.3.0 | Release Notes Third Party Advisory |
| https://hackerone.com/reports/1200700 | Permissions Required |
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-2021-32689 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-32689 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 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-xv6f-344w-895c Added Reference https://github.com/nextcloud/spreed/pull/5633 Added Reference https://github.com/nextcloud/spreed/releases/tag/v11.2.2 Added Reference https://github.com/nextcloud/spreed/releases/tag/v11.3.0 Added Reference https://hackerone.com/reports/1200700 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Reanalysis by [email protected]
Jul. 02, 2022
Action Type Old Value New Value Removed CWE NIST CWE-200 Added CWE NIST NVD-CWE-Other -
Initial Analysis by [email protected]
Jul. 15, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:S/C:P/I:N/A:N) Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Changed Reference Type https://github.com/nextcloud/security-advisories/security/advisories/GHSA-xv6f-344w-895c No Types Assigned https://github.com/nextcloud/security-advisories/security/advisories/GHSA-xv6f-344w-895c Third Party Advisory Changed Reference Type https://github.com/nextcloud/spreed/pull/5633 No Types Assigned https://github.com/nextcloud/spreed/pull/5633 Patch, Third Party Advisory Changed Reference Type https://github.com/nextcloud/spreed/releases/tag/v11.2.2 No Types Assigned https://github.com/nextcloud/spreed/releases/tag/v11.2.2 Release Notes, Third Party Advisory Changed Reference Type https://github.com/nextcloud/spreed/releases/tag/v11.3.0 No Types Assigned https://github.com/nextcloud/spreed/releases/tag/v11.3.0 Release Notes, Third Party Advisory Changed Reference Type https://hackerone.com/reports/1200700 No Types Assigned https://hackerone.com/reports/1200700 Permissions Required Added CWE NIST CWE-200 Added CPE Configuration OR *cpe:2.3:a:nextcloud:talk:*:*:*:*:*:*:*:* versions up to (excluding) 11.2.2
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-32689 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-2021-32689
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.08 }} -0.01%
score
0.37601
percentile