CVE-2021-21396
Wire-server Insecure User Metadata Disclosure
Description
wire-server is an open-source back end for Wire, a secure collaboration platform. In wire-server from version 2021-02-16 and before version 2021-03-02, the client metadata of all users was exposed in the `GET /users/list-clients` endpoint. The endpoint could be used by any logged in user who could request client details of any other user (no connection required) as far as they can find their User ID. The exposed metadata included id, class, type, location, time, and cookie. A user on a Wire backend could use this endpoint to find registration time and location for each device for a given list of users. As a workaround, remove `/list-clients` from nginx config. This has been fixed in version 2021-03-02.
INFO
Published Date :
March 26, 2021, 10:15 p.m.
Last Modified :
Aug. 27, 2021, 3:05 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
2.8
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-2021-21396.
| URL | Resource |
|---|---|
| https://github.com/wireapp/wire-server/commit/7ba2bf4140282557cf215e0b2c354d4d08cd3421 | Patch Third Party Advisory |
| https://github.com/wireapp/wire-server/releases/tag/v2021-03-02 | Third Party Advisory |
| https://github.com/wireapp/wire-server/security/advisories/GHSA-qx8q-rhq2-rg4j | Patch 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-2021-21396 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-21396 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 -
Reanalysis by [email protected]
Aug. 27, 2021
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:wire:wire:*:*:*:*:*:*:*:* versions from (including) 2021-02-16 up to (excluding) 2021-03-02 OR *cpe:2.3:a:wire:wire_server:*:*:*:*:*:*:*:* versions from (including) 2021-02-16 up to (excluding) 2021-03-02 -
Initial Analysis by [email protected]
Apr. 01, 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/wireapp/wire-server/commit/7ba2bf4140282557cf215e0b2c354d4d08cd3421 No Types Assigned https://github.com/wireapp/wire-server/commit/7ba2bf4140282557cf215e0b2c354d4d08cd3421 Patch, Third Party Advisory Changed Reference Type https://github.com/wireapp/wire-server/releases/tag/v2021-03-02 No Types Assigned https://github.com/wireapp/wire-server/releases/tag/v2021-03-02 Third Party Advisory Changed Reference Type https://github.com/wireapp/wire-server/security/advisories/GHSA-qx8q-rhq2-rg4j No Types Assigned https://github.com/wireapp/wire-server/security/advisories/GHSA-qx8q-rhq2-rg4j Patch, Third Party Advisory Added CPE Configuration OR *cpe:2.3:a:wire:wire:*:*:*:*:*:*:*:* versions from (including) 2021-02-16 up to (excluding) 2021-03-02
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-21396 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-2021-21396
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.10 }} 0.00%
score
0.39626
percentile