Vulnerability-Lookup

VAR-202204-0859

Vulnerability from variot - Updated: 2023-12-18 12:55

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

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CVE-2021-41119 (GCVE-0-2021-41119)

Vulnerability from cvelistv5 – Published: 2022-04-13 18:25 – Updated: 2025-04-22 18:16

Title

DoS vulnerabiliity in wire-server json parser

Summary

Severity

5.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-04-22 15:41 UTC

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

GitHub_M mitre root

References

2 references

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

Impacted products

1 product

Vendor	Product	Version
wireapp	wire-server	Affected: < v2022-03-01

Show details on NVD website

JSON

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        },
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          "url": "https://cs-syd.eu/posts/2021-09-11-json-vulnerability"
        }
      ],
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        "advisory": "GHSA-phxv-pffh-fq2r",
        "discovery": "UNKNOWN"
      },
      "title": "DoS vulnerabiliity in wire-server json parser",
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Sightings

Author	Source	Type	Date	Other

Nomenclature

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Confirmed: The vulnerability has been validated from an analyst's perspective.
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Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

VAR-202204-0859

CVE-2021-41119 (GCVE-0-2021-41119)

Tags

Sightings

Nomenclature

Related by attack behaviour