CVE-2016-2774 (GCVE-0-2016-2774)
Vulnerability from cvelistv5 – Published: 2016-03-09 15:26 – Updated: 2024-08-05 23:32
VLAI
EPSS
VEX
Summary
ISC DHCP 4.1.x before 4.1-ESV-R13 and 4.2.x and 4.3.x before 4.3.4 does not restrict the number of concurrent TCP sessions, which allows remote attackers to cause a denial of service (INSIST assertion failure or request-processing outage) by establishing many sessions.
Severity
5.9 (Medium)
CWE
- n/a
Assigner
References
10 references
| URL | Tags |
|---|---|
| http://rhn.redhat.com/errata/RHSA-2016-2590.html | vendor-advisoryx_refsource_REDHAT |
| http://www.securitytracker.com/id/1035196 | vdb-entryx_refsource_SECTRACK |
| https://kb.isc.org/article/AA-01354 | x_refsource_CONFIRM |
| http://www.oracle.com/technetwork/topics/security… | x_refsource_CONFIRM |
| http://lists.fedoraproject.org/pipermail/package-… | vendor-advisoryx_refsource_FEDORA |
| https://usn.ubuntu.com/3586-1/ | vendor-advisoryx_refsource_UBUNTU |
| http://lists.opensuse.org/opensuse-updates/2016-0… | vendor-advisoryx_refsource_SUSE |
| http://lists.fedoraproject.org/pipermail/package-… | vendor-advisoryx_refsource_FEDORA |
| http://www.securityfocus.com/bid/84208 | vdb-entryx_refsource_BID |
| https://lists.debian.org/debian-lts-announce/2019… | mailing-listx_refsource_MLIST |
Date Public
2016-03-07 00:00
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"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183640.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"url": "http://lists.opensuse.org/opensuse-updates/2016-07/msg00066.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "http://rhn.redhat.com/errata/RHSA-2016-2590.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory",
"VDB Entry"
],
"url": "http://www.securityfocus.com/bid/84208"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory",
"VDB Entry"
],
"url": "http://www.securitytracker.com/id/1035196"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "https://kb.isc.org/article/AA-01354"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://lists.debian.org/debian-lts-announce/2019/11/msg00023.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://usn.ubuntu.com/3586-1/"
}
],
"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-20"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2025-11-21T12:09:01+00:00",
"cve": "CVE-2016-2774",
"id": "CVE-2016-2774",
"initial_release_date": "2016-03-07T00:00:00+00:00",
"product_status:fixed": "320",
"product_status:known_affected": "6",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "dhcp: unclosed TCP connections to OMAPI or failover ports can cause DoS",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2016/cve-2016-2774.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "low",
"current_release_date": "2026-05-09T03:05:37Z",
"cve": "CVE-2016-2774",
"id": "CVE-2016-2774",
"initial_release_date": "2023-02-15T05:05:37Z",
"product_status:known_affected": "1",
"product_status:recommended": "96",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2016-2774",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2016-2774.json",
"version": "10"
}
}
}
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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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