Vulnerability · Published Apr 13, 2022 · Assigned by GitHub_M
CVE-2021-41119DoS vulnerabiliity in wire-server json parser
Medium 5.3
In plain English
A medium-severity uncontrolled resource consumption in wire-server from wireapp. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.4% (higher than 72% of all known vulnerabilities).
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu:22.04:LTS | haskell-aeson | no fix listed | UBUNTU-CVE-2021-41119 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| wireapp | wire-server | < v2022-03-01 |
Weakness: CWE-400 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
References
- https://github.com/wireapp/wire-server/security/advisories/GHSA-phxv-pffh-fq2r x_refsource_CONFIRM
- https://cs-syd.eu/posts/2021-09-11-json-vulnerability x_refsource_MISC