CVE-2021-41119
Wire-Server Denial of Service Hash Collision Vulnerability
Description
Wire-server is the system server for the wire back-end services. Releases prior to v2022-03-01 are subject to a denial of service attack via a crafted object causing a hash collision. This collision causes the server to spend at least quadratic time parsing it which can lead to a denial of service for a heavily used server. The issue has been fixed in wire-server 2022-03-01 and is already deployed on all Wire managed services. On premise instances of wire-server need to be updated to 2022-03-01, so that their backends are no longer affected. There are no known workarounds for this issue.
INFO
Published Date :
April 13, 2022, 7:15 p.m.
Last Modified :
April 21, 2022, 5:13 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
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-2021-41119.
| URL | Resource |
|---|---|
| https://cs-syd.eu/posts/2021-09-11-json-vulnerability | Exploit Third Party Advisory |
| https://github.com/wireapp/wire-server/security/advisories/GHSA-phxv-pffh-fq2r | 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-2021-41119 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-41119 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 -
Initial Analysis by [email protected]
Apr. 21, 2022
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://cs-syd.eu/posts/2021-09-11-json-vulnerability No Types Assigned https://cs-syd.eu/posts/2021-09-11-json-vulnerability Exploit, Third Party Advisory Changed Reference Type https://github.com/wireapp/wire-server/security/advisories/GHSA-phxv-pffh-fq2r No Types Assigned https://github.com/wireapp/wire-server/security/advisories/GHSA-phxv-pffh-fq2r Third Party Advisory Added CWE NIST CWE-400 Added CPE Configuration OR *cpe:2.3:a:wire:wire-server:*:*:*:*:*:*:*:* versions up to (excluding) 2022-03-01
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-41119 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-2021-41119
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.10 }} 0.01%
score
0.42372
percentile