DoS vulnerabiliity in wire-server json parser
CVE-2021-41119

5.3MEDIUM

Key Information:

Vendor

Wireapp

Status
Wire-server
Vendor
CVE Published:
13 April 2022

What is 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.

Affected Version(s)

wire-server < v2022-03-01

References

https://github.com/wireapp/wire-server/security/advisorie...
x_refsource_CONFIRM
https://cs-syd.eu/posts/2021-09-11-json-vulnerability
x_refsource_MISC

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.