CVE-2021-41119
Last modified
CVE-2021-41119 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 1.50% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Wire | Wire-Server | < 2022-03-01 |
References
- https://cs-syd.eu/posts/2021-09-11-json-vulnerabilityExploit, Third Party Advisory
- https://github.com/wireapp/wire-server/security/advisories/GHSA-phxv-pffh-fq2rThird Party Advisory
- https://cs-syd.eu/posts/2021-09-11-json-vulnerabilityExploit, Third Party Advisory
- https://github.com/wireapp/wire-server/security/advisories/GHSA-phxv-pffh-fq2rThird Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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