CVE-2021-41119

 

Published at: - 13-04-2022 09:15

Last modified: - 21-04-2022 07:13

Total changes: - 3

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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

 

Verification logic

 

Reference

• https://cs-syd.eu/posts/2021-09-11-json-vulnerability
• https://github.com/wireapp/wire-server/security/advisories/GHSA-phxv-pffh-fq2r

 

Keywords

NVD

 

CVE-2021-41119

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures