CVE-2011-5000 (GCVE-0-2011-5000)
Vulnerability from cvelistv5 – Published: 2012-04-04 10:00 – Updated: 2024-08-07 00:23
VLAI
EPSS
VEX
Summary
The ssh_gssapi_parse_ename function in gss-serv.c in OpenSSH 5.8 and earlier, when gssapi-with-mic authentication is enabled, allows remote authenticated users to cause a denial of service (memory consumption) via a large value in a certain length field. NOTE: there may be limited scenarios in which this issue is relevant.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
3 references
| URL | Tags |
|---|---|
| http://seclists.org/fulldisclosure/2011/Aug/2 | mailing-listx_refsource_FULLDISC |
| http://rhn.redhat.com/errata/RHSA-2012-0884.html | vendor-advisoryx_refsource_REDHAT |
| http://site.pi3.com.pl/adv/ssh_1.txt | x_refsource_MISC |
Date Public
2011-08-01 00:00
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"baseSeverity": "LOW",
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"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "SINGLE",
"availabilityImpact": "PARTIAL",
"baseScore": 3.5,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:M/Au:S/C:N/I:N/A:P",
"version": "2.0"
},
"exploitabilityScore": 6.8,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
]
},
"published": "2012-04-05T14:55:03.590",
"references": [
{
"source": "cve@mitre.org",
"url": "http://rhn.redhat.com/errata/RHSA-2012-0884.html"
},
{
"source": "cve@mitre.org",
"tags": [
"Exploit"
],
"url": "http://seclists.org/fulldisclosure/2011/Aug/2"
},
{
"source": "cve@mitre.org",
"tags": [
"Exploit"
],
"url": "http://site.pi3.com.pl/adv/ssh_1.txt"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://rhn.redhat.com/errata/RHSA-2012-0884.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Exploit"
],
"url": "http://seclists.org/fulldisclosure/2011/Aug/2"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Exploit"
],
"url": "http://site.pi3.com.pl/adv/ssh_1.txt"
}
],
"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-189"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Low",
"current_release_date": "2025-11-21T12:53:54+00:00",
"cve": "CVE-2011-5000",
"id": "CVE-2011-5000",
"initial_release_date": "2011-08-01T00:00:00+00:00",
"product_status:fixed": "264",
"product_status:known_affected": "2",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "openssh: post-authentication resource exhaustion bug via GSSAPI",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2011/cve-2011-5000.json",
"version": "3"
}
}
}
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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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