CVE-2016-2181 (GCVE-0-2016-2181)
Vulnerability from cvelistv5 – Published: 2016-09-16 00:00 – Updated: 2024-08-05 23:17
VLAI
EPSS
VEX
Summary
The Anti-Replay feature in the DTLS implementation in OpenSSL before 1.1.0 mishandles early use of a new epoch number in conjunction with a large sequence number, which allows remote attackers to cause a denial of service (false-positive packet drops) via spoofed DTLS records, related to rec_layer_d1.c and ssl3_record.c.
Severity
7.5 (High)
CWE
- n/a
Assigner
References
41 references
Date Public
2016-08-19 00:00
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"value": "The Anti-Replay feature in the DTLS implementation in OpenSSL before 1.1.0 mishandles early use of a new epoch number in conjunction with a large sequence number, which allows remote attackers to cause a denial of service (false-positive packet drops) via spoofed DTLS records, related to rec_layer_d1.c and ssl3_record.c."
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{
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"value": "The Anti-Replay feature in the DTLS implementation in OpenSSL before 1.1.0 mishandles early use of a new epoch number in conjunction with a large sequence number, which allows remote attackers to cause a denial of service (false-positive packet drops) via spoofed DTLS records, related to rec_layer_d1.c and ssl3_record.c."
},
{
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"value": "La funcionalidad Anti-Replay en la implementaci\u00f3n DTLS en OpenSSL en versiones anteriores a 1.1.0 no maneja adecuadamente el uso temprano de un n\u00famero de \u00e9poca nuevo en conjunci\u00f3n con un n\u00famero de secuencia larga, lo que permite a atacantes remotos provocar una denegaci\u00f3n de servicio (gotas de paquetes falsos positivos) a trav\u00e9s de registros DTLS suplantados, relacionado con rec_layer_d1.c y ssl3_record.c."
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],
"id": "CVE-2016-2181",
"lastModified": "2026-05-06T22:30:45.220",
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{
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},
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"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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{
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{
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],
"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-189"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
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]
}
},
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-08-04T21:58:04+00:00",
"cve": "CVE-2016-2181",
"id": "CVE-2016-2181",
"initial_release_date": "2016-07-05T00:00:00+00:00",
"product_status:fixed": "151",
"product_status:known_affected": "7",
"product_status:known_not_affected": "4",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "openssl: DTLS replay protection bypass allows DoS against DTLS connection",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2016/cve-2016-2181.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-10-17T02:27:04Z",
"cve": "CVE-2016-2181",
"id": "CVE-2016-2181",
"initial_release_date": "2023-02-15T05:06:22Z",
"product_status:known_affected": "325",
"product_status:known_not_affected": "332",
"product_status:recommended": "1053",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2016-2181",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2023/cve-2016-2181.json",
"version": "46"
}
}
}
Loading…
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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
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.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
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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.