FKIE_CVE-2016-6515
Vulnerability from fkie_nvd - Published: 2016-08-07 21:59 - Updated: 2026-06-17 00:51
Severity
Summary
The auth_password function in auth-passwd.c in sshd in OpenSSH before 7.3 does not limit password lengths for password authentication, which allows remote attackers to cause a denial of service (crypt CPU consumption) via a long string.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| openbsd | openssh | * | |
| fedoraproject | fedora | 24 |
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"value": "The auth_password function in auth-passwd.c in sshd in OpenSSH before 7.3 does not limit password lengths for password authentication, which allows remote attackers to cause a denial of service (crypt CPU consumption) via a long string."
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"lang": "es",
"value": "La funci\u00f3n auth_password en auth-passwd.c en sshd en OpenSSH en versiones anteriores a 7.3 no limita longitudes de contrase\u00f1a para autenticaci\u00f3n de contrase\u00f1a, lo que permite a atacantes remotos provocar una denegaci\u00f3n de servicio (consumo de CPU clave) a trav\u00e9s de una cadena larga."
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],
"id": "CVE-2016-6515",
"lastModified": "2026-06-17T00:51:18.350",
"metrics": {
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"published": "2016-08-07T21:59:09.943",
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"url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-17:06.openssh.asc"
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"url": "https://security.netapp.com/advisory/ntap-20171130-0003/"
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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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