Vulnerability Details : CVE-2021-41119
Potential exploit
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.
Vulnerability category: Denial of service
Products affected by CVE-2021-41119
- cpe:2.3:a:wire:wire-server:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-41119
0.41%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 60 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-41119
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST | |
|
5.3
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
3.9
|
1.4
|
GitHub, Inc. |
CWE ids for CVE-2021-41119
-
The product does not properly control the allocation and maintenance of a limited resource.Assigned by:
- nvd@nist.gov (Primary)
- security-advisories@github.com (Secondary)
References for CVE-2021-41119
-
https://cs-syd.eu/posts/2021-09-11-json-vulnerability
CS SYD - JSON Vulnerability in Haskell's Aeson libraryExploit;Third Party Advisory
-
https://github.com/wireapp/wire-server/security/advisories/GHSA-phxv-pffh-fq2r
DoS vulnerabiliity in json parser · Advisory · wireapp/wire-server · GitHubThird Party Advisory
Jump to