CVE Vulnerability

CVE-2021-41119

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.

5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

Scope

7.5 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link 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
Configurations

Configuration 1

cpe:2.3:a:wire:wire-server:*:*:*:*:*:*:*:*
Information

Published : 2022-04-13 07:15

Updated : 2022-04-21 05:13

NVD link : CVE-2021-41119

Mitre link : CVE-2021-41119

Products Affected
No products.
CWE
CWE-400