FKIE_CVE-2021-32919
Vulnerability from fkie_nvd - Published: 2021-05-13 16:15 - Updated: 2026-06-17 03:53
Severity
Summary
An issue was discovered in Prosody before 0.11.9. The undocumented dialback_without_dialback option in mod_dialback enables an experimental feature for server-to-server authentication. It does not correctly authenticate remote server certificates, allowing a remote server to impersonate another server (when this option is enabled).
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| prosody | prosody | * | |
| debian | debian_linux | 10.0 | |
| fedoraproject | fedora | 32 | |
| fedoraproject | fedora | 33 | |
| fedoraproject | fedora | 34 |
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"value": "An issue was discovered in Prosody before 0.11.9. The undocumented dialback_without_dialback option in mod_dialback enables an experimental feature for server-to-server authentication. It does not correctly authenticate remote server certificates, allowing a remote server to impersonate another server (when this option is enabled)."
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"value": "Se detect\u00f3 un problema en Prosody versiones anteriores a 0.11.9.\u0026#xa0;La opci\u00f3n no documentada dialback_without_dialback en la funci\u00f3n mod_dialback habilita una funcionalidad experimental para la autenticaci\u00f3n de servidor a servidor.\u0026#xa0;No autentica correctamente los certificados de servidor remoto, permitiendo que un servidor remoto suplante a otro servidor (cuando esta opci\u00f3n est\u00e1 habilitada)"
}
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"lastModified": "2026-06-17T03:53:47.970",
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}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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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.
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.
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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.
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