FKIE_CVE-2009-0845
Vulnerability from fkie_nvd - Published: 2009-03-27 16:30 - Updated: 2026-06-16 23:05
Severity
Summary
The spnego_gss_accept_sec_context function in lib/gssapi/spnego/spnego_mech.c in MIT Kerberos 5 (aka krb5) 1.5 through 1.6.3, when SPNEGO is used, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via invalid ContextFlags data in the reqFlags field in a negTokenInit token.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| mit | kerberos | 5-1.6.3 | |
| mit | kerberos_5 | 1.5 | |
| mit | kerberos_5 | 1.5.1 | |
| mit | kerberos_5 | 1.5.2 | |
| mit | kerberos_5 | 1.5.3 | |
| mit | kerberos_5 | 1.6 | |
| mit | kerberos_5 | 1.6.1 | |
| mit | kerberos_5 | 1.6.2 |
{
"affected": [
{
"affectedData": [
{
"product": "n/a",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
],
"source": "cve@mitre.org"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:mit:kerberos:5-1.6.3:*:*:*:*:*:*:*",
"matchCriteriaId": "032730AE-1E53-4CA2-96FD-AD60CD27F3CA",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:mit:kerberos_5:1.5:*:*:*:*:*:*:*",
"matchCriteriaId": "4DD315AE-868B-4061-BF01-CDBF59B02499",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:mit:kerberos_5:1.5.1:*:*:*:*:*:*:*",
"matchCriteriaId": "B639DD5F-71C7-4D9B-BA5C-51CAF64140B6",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:mit:kerberos_5:1.5.2:*:*:*:*:*:*:*",
"matchCriteriaId": "2B904DCE-D59F-45C7-A814-DE42CF02792D",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:mit:kerberos_5:1.5.3:*:*:*:*:*:*:*",
"matchCriteriaId": "9957FE9E-1E89-4C27-852C-44F866A1834E",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:mit:kerberos_5:1.6:*:*:*:*:*:*:*",
"matchCriteriaId": "2C382DAA-68D2-4DD9-BE29-8EEB0BAF1A7A",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:mit:kerberos_5:1.6.1:*:*:*:*:*:*:*",
"matchCriteriaId": "73BB258E-51CF-4D12-836B-BCEA587A3F5F",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:mit:kerberos_5:1.6.2:*:*:*:*:*:*:*",
"matchCriteriaId": "F81DE01C-BA3B-40B4-BD85-17692F0AF8A8",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "The spnego_gss_accept_sec_context function in lib/gssapi/spnego/spnego_mech.c in MIT Kerberos 5 (aka krb5) 1.5 through 1.6.3, when SPNEGO is used, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via invalid ContextFlags data in the reqFlags field in a negTokenInit token."
},
{
"lang": "es",
"value": "La funci\u00f3n spnego_gss_accept_sec_context en lib/gssapi/spnego/spnego_mech.c en MIT Kerberos 5 (conocido como krb5) v.1.6.3, cuando se utiliza SPNEGO, permite a atacantes remotos provocar una denegaci\u00f3n de servicio (referencia a puntero nulo y ca\u00edda de la aplicaci\u00f3n) mediante datos \"ContextFlags\" inv\u00e1lidos en el campo \"reqFlags\" en el token negTokenInit."
}
],
"id": "CVE-2009-0845",
"lastModified": "2026-06-16T23:05:56.393",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 5.0,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
]
},
"published": "2009-03-27T16:30:02.157",
"references": [
{
"source": "cve@mitre.org",
"url": "http://krbdev.mit.edu/rt/Ticket/Display.html?user=guest\u0026pass=guest\u0026id=6402"
},
{
"source": "cve@mitre.org",
"url": "http://lists.apple.com/archives/security-announce/2009/May/msg00002.html"
},
{
"source": "cve@mitre.org",
"tags": [
"Vendor Advisory"
],
"url": "http://secunia.com/advisories/34347"
},
{
"source": "cve@mitre.org",
"url": "http://secunia.com/advisories/34594"
},
{
"source": "cve@mitre.org",
"url": "http://secunia.com/advisories/34617"
},
{
"source": "cve@mitre.org",
"url": "http://secunia.com/advisories/34622"
},
{
"source": "cve@mitre.org",
"url": "http://secunia.com/advisories/34628"
},
{
"source": "cve@mitre.org",
"url": "http://secunia.com/advisories/34630"
},
{
"source": "cve@mitre.org",
"url": "http://secunia.com/advisories/34637"
},
{
"source": "cve@mitre.org",
"url": "http://secunia.com/advisories/34640"
},
{
"source": "cve@mitre.org",
"url": "http://secunia.com/advisories/34734"
},
{
"source": "cve@mitre.org",
"tags": [
"Vendor Advisory"
],
"url": "http://secunia.com/advisories/35074"
},
{
"source": "cve@mitre.org",
"url": "http://security.gentoo.org/glsa/glsa-200904-09.xml"
},
{
"source": "cve@mitre.org",
"tags": [
"Exploit"
],
"url": "http://src.mit.edu/fisheye/browse/krb5/trunk/src/lib/gssapi/spnego/spnego_mech.c?r1=21875\u0026r2=22084"
},
{
"source": "cve@mitre.org",
"tags": [
"Vendor Advisory"
],
"url": "http://src.mit.edu/fisheye/changelog/krb5/?cs=22084"
},
{
"source": "cve@mitre.org",
"url": "http://sunsolve.sun.com/search/document.do?assetkey=1-26-256728-1"
},
{
"source": "cve@mitre.org",
"url": "http://support.apple.com/kb/HT3549"
},
{
"source": "cve@mitre.org",
"url": "http://support.avaya.com/elmodocs2/security/ASA-2009-142.htm"
},
{
"source": "cve@mitre.org",
"url": "http://support.novell.com/docs/Readmes/InfoDocument/patchbuilder/readme_5047180.html"
},
{
"source": "cve@mitre.org",
"url": "http://support.novell.com/docs/Readmes/InfoDocument/patchbuilder/readme_5047181.html"
},
{
"source": "cve@mitre.org",
"url": "http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2009-001.txt"
},
{
"source": "cve@mitre.org",
"url": "http://wiki.rpath.com/Advisories:rPSA-2009-0058"
},
{
"source": "cve@mitre.org",
"url": "http://wiki.rpath.com/wiki/Advisories:rPSA-2009-0058"
},
{
"source": "cve@mitre.org",
"url": "http://www-01.ibm.com/support/docview.wss?uid=swg21396120"
},
{
"source": "cve@mitre.org",
"tags": [
"US Government Resource"
],
"url": "http://www.kb.cert.org/vuls/id/662091"
},
{
"source": "cve@mitre.org",
"url": "http://www.mandriva.com/security/advisories?name=MDVSA-2009:082"
},
{
"source": "cve@mitre.org",
"url": "http://www.redhat.com/support/errata/RHSA-2009-0408.html"
},
{
"source": "cve@mitre.org",
"url": "http://www.securityfocus.com/archive/1/502526/100/0/threaded"
},
{
"source": "cve@mitre.org",
"url": "http://www.securityfocus.com/archive/1/502546/100/0/threaded"
},
{
"source": "cve@mitre.org",
"url": "http://www.securityfocus.com/bid/34257"
},
{
"source": "cve@mitre.org",
"url": "http://www.securitytracker.com/id?1021867"
},
{
"source": "cve@mitre.org",
"url": "http://www.ubuntu.com/usn/usn-755-1"
},
{
"source": "cve@mitre.org",
"tags": [
"US Government Resource"
],
"url": "http://www.us-cert.gov/cas/techalerts/TA09-133A.html"
},
{
"source": "cve@mitre.org",
"tags": [
"Vendor Advisory"
],
"url": "http://www.vupen.com/english/advisories/2009/0847"
},
{
"source": "cve@mitre.org",
"url": "http://www.vupen.com/english/advisories/2009/0976"
},
{
"source": "cve@mitre.org",
"url": "http://www.vupen.com/english/advisories/2009/1057"
},
{
"source": "cve@mitre.org",
"url": "http://www.vupen.com/english/advisories/2009/1106"
},
{
"source": "cve@mitre.org",
"url": "http://www.vupen.com/english/advisories/2009/1297"
},
{
"source": "cve@mitre.org",
"tags": [
"Vendor Advisory"
],
"url": "http://www.vupen.com/english/advisories/2009/2248"
},
{
"source": "cve@mitre.org",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/49448"
},
{
"source": "cve@mitre.org",
"url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10044"
},
{
"source": "cve@mitre.org",
"url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6449"
},
{
"source": "cve@mitre.org",
"url": "https://www.redhat.com/archives/fedora-package-announce/2009-April/msg00205.html"
},
{
"source": "cve@mitre.org",
"url": "https://www.redhat.com/archives/fedora-package-announce/2009-April/msg00206.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://krbdev.mit.edu/rt/Ticket/Display.html?user=guest\u0026pass=guest\u0026id=6402"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://lists.apple.com/archives/security-announce/2009/May/msg00002.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "http://secunia.com/advisories/34347"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://secunia.com/advisories/34594"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://secunia.com/advisories/34617"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://secunia.com/advisories/34622"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://secunia.com/advisories/34628"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://secunia.com/advisories/34630"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://secunia.com/advisories/34637"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://secunia.com/advisories/34640"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://secunia.com/advisories/34734"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "http://secunia.com/advisories/35074"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://security.gentoo.org/glsa/glsa-200904-09.xml"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Exploit"
],
"url": "http://src.mit.edu/fisheye/browse/krb5/trunk/src/lib/gssapi/spnego/spnego_mech.c?r1=21875\u0026r2=22084"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "http://src.mit.edu/fisheye/changelog/krb5/?cs=22084"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://sunsolve.sun.com/search/document.do?assetkey=1-26-256728-1"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://support.apple.com/kb/HT3549"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://support.avaya.com/elmodocs2/security/ASA-2009-142.htm"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://support.novell.com/docs/Readmes/InfoDocument/patchbuilder/readme_5047180.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://support.novell.com/docs/Readmes/InfoDocument/patchbuilder/readme_5047181.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2009-001.txt"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://wiki.rpath.com/Advisories:rPSA-2009-0058"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://wiki.rpath.com/wiki/Advisories:rPSA-2009-0058"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www-01.ibm.com/support/docview.wss?uid=swg21396120"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"US Government Resource"
],
"url": "http://www.kb.cert.org/vuls/id/662091"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.mandriva.com/security/advisories?name=MDVSA-2009:082"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.redhat.com/support/errata/RHSA-2009-0408.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.securityfocus.com/archive/1/502526/100/0/threaded"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.securityfocus.com/archive/1/502546/100/0/threaded"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.securityfocus.com/bid/34257"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.securitytracker.com/id?1021867"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.ubuntu.com/usn/usn-755-1"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"US Government Resource"
],
"url": "http://www.us-cert.gov/cas/techalerts/TA09-133A.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "http://www.vupen.com/english/advisories/2009/0847"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.vupen.com/english/advisories/2009/0976"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.vupen.com/english/advisories/2009/1057"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.vupen.com/english/advisories/2009/1106"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.vupen.com/english/advisories/2009/1297"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "http://www.vupen.com/english/advisories/2009/2248"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/49448"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10044"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6449"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://www.redhat.com/archives/fedora-package-announce/2009-April/msg00205.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://www.redhat.com/archives/fedora-package-announce/2009-April/msg00206.html"
}
],
"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-20"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
Loading…
Loading…
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.
Loading…
Loading…
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.
Loading…
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.
Loading…