CVE-2006-5051 (GCVE-0-2006-5051)
Vulnerability from cvelistv5 – Published: 2006-09-27 23:00 – Updated: 2024-08-07 19:32
VLAI
EPSS
VEX
Summary
Signal handler race condition in OpenSSH before 4.4 allows remote attackers to cause a denial of service (crash), and possibly execute arbitrary code if GSSAPI authentication is enabled, via unspecified vectors that lead to a double-free.
Severity
8.1 (High)
CWE
- n/a
Assigner
References
58 references
Date Public
2006-09-27 00:00
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"url": "https://www.openwall.com/lists/oss-security/2024/07/28/3"
}
]
}
},
"cveMetadata": {
"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
"assignerShortName": "redhat",
"cveId": "CVE-2006-5051",
"datePublished": "2006-09-27T23:00:00.000Z",
"dateReserved": "2006-09-27T00:00:00.000Z",
"dateUpdated": "2024-08-07T19:32:23.380Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2006-5051",
"date": "2026-09-16",
"epss": "0.44963",
"percentile": "0.98714"
},
"fkie_nvd": {
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"descriptions": "[{\"lang\": \"en\", \"value\": \"Signal handler race condition in OpenSSH before 4.4 allows remote attackers to cause a denial of service (crash), and possibly execute arbitrary code if GSSAPI authentication is enabled, via unspecified vectors that lead to a double-free.\"}, {\"lang\": \"es\", \"value\": \"Condici\\u00f3n de carrera en el manejador de se\\u00f1al OpenSSH en versiones anteriores a 4.4 permite a atacantes remotos provocar una denegaci\\u00f3n de servicio (ca\\u00edda) y posiblemente ejecutar c\\u00f3digo arbitrario si la autenticaci\\u00f3n GSSAPI est\\u00e1 habilitada, a trav\\u00e9s de vectores no especificados que conducen a una doble liberaci\\u00f3n.\"}]",
"evaluatorImpact": "Successful code execution exploitation requires that GSSAPI authentication is enabled.",
"id": "CVE-2006-5051",
"lastModified": "2024-11-21T00:17:40.373",
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"published": "2006-09-27T23:07:00.000",
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"sourceIdentifier": "secalert@redhat.com",
"vendorComments": "[{\"organization\": \"Red Hat\", \"comment\": \"Red Hat Enterprise Linux 5 is not vulnerable to this issue as it contains a backported patch.\", \"lastModified\": \"2007-03-14T00:00:00\"}]",
"vulnStatus": "Modified",
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},
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Link\"]},{\"url\":\"http://www.openbsd.org/errata.html#ssh\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Release Notes\"]},{\"url\":\"http://www.openpkg.org/security/advisories/OpenPKG-SA-2006.022-openssh.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Broken Link\"]},{\"url\":\"http://www.openwall.com/lists/oss-security/2024/07/01/3\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://www.openwall.com/lists/oss-security/2024/07/28/3\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://www.osvdb.org/29264\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Broken Link\"]},{\"url\":\"http://www.redhat.com/support/errata/RHSA-2006-0697.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Broken Link\"]},{\"url\":\"http://www.redhat.com/support/errata/RHSA-2006-0698.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Broken Link\"]},{\"url\":\"http://www.securityfocus.com/bid/20241\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Broken Link\",\"Third Party Advisory\",\"VDB Entry\"]},{\"url\":\"http://www.ubuntu.com/usn/usn-355-1\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Broken Link\"]},{\"url\":\"http://www.us-cert.gov/cas/techalerts/TA07-072A.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\",\"US Government Resource\"]},{\"url\":\"http://www.vmware.com/support/vi3/doc/esx-3069097-patch.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Broken Link\"]},{\"url\":\"http://www.vmware.com/support/vi3/doc/esx-9986131-patch.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Broken Link\"]},{\"url\":\"http://www.vupen.com/english/advisories/2006/4018\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Broken Link\"]},{\"url\":\"http://www.vupen.com/english/advisories/2006/4329\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Broken Link\"]},{\"url\":\"http://www.vupen.com/english/advisories/2007/0930\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Broken Link\"]},{\"url\":\"http://www.vupen.com/english/advisories/2007/1332\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Broken Link\"]},{\"url\":\"https://exchange.xforce.ibmcloud.com/vulnerabilities/29254\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\",\"VDB Entry\"]},{\"url\":\"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11387\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Broken Link\"]},{\"url\":\"https://www.openwall.com/lists/oss-security/2024/07/28/3\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}],\"evaluatorImpact\":\"Successful code execution exploitation requires that GSSAPI authentication is enabled.\",\"vendorComments\":[{\"organization\":\"Red Hat\",\"comment\":\"Red Hat Enterprise Linux 5 is not vulnerable to this issue as it contains a backported patch.\",\"lastModified\":\"2007-03-14T00:00:00\"}]}}",
"redhat_vex": {
"aggregate_severity": "Important",
"current_release_date": "2025-11-21T13:21:40+00:00",
"cve": "CVE-2006-5051",
"id": "CVE-2006-5051",
"initial_release_date": "2006-09-28T00:00:00+00:00",
"product_status:fixed": "340",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "unsafe GSSAPI signal handler",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2006/cve-2006-5051.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "important",
"current_release_date": "2026-09-02T13:11:17Z",
"cve": "CVE-2006-5051",
"id": "CVE-2006-5051",
"initial_release_date": "2023-02-15T06:14:13Z",
"product_status:known_not_affected": "248",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2006-5051",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2006-5051.json",
"version": "20"
}
}
}
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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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