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CVE-2009-0847 (GCVE-0-2009-0847)

Vulnerability from cvelistv5 – Published: 2009-04-09 00:00 – Updated: 2024-08-07 04:48
VLAI
Summary
The asn1buf_imbed function in the ASN.1 decoder in MIT Kerberos 5 (aka krb5) 1.6.3, when PK-INIT is used, allows remote attackers to cause a denial of service (application crash) via a crafted length value that triggers an erroneous malloc call, related to incorrect calculations with pointer arithmetic.
Severity
No CVSS data available.
CWE
  • n/a
Assigner
References
URL Tags
http://support.novell.com/docs/Readmes/InfoDocume… x_refsource_MISC
http://www.mandriva.com/security/advisories?name=… vendor-advisoryx_refsource_MANDRIVA
http://www.securityfocus.com/archive/1/502526/100… mailing-listx_refsource_BUGTRAQ
http://www.kb.cert.org/vuls/id/662091 third-party-advisoryx_refsource_CERT-VN
http://www.vupen.com/english/advisories/2009/0960 vdb-entryx_refsource_VUPEN
http://support.apple.com/kb/HT3549 x_refsource_CONFIRM
http://support.avaya.com/elmodocs2/security/ASA-2… x_refsource_CONFIRM
https://oval.cisecurity.org/repository/search/def… vdb-entrysignaturex_refsource_OVAL
http://secunia.com/advisories/34637 third-party-advisoryx_refsource_SECUNIA
http://www.vupen.com/english/advisories/2009/2084 vdb-entryx_refsource_VUPEN
http://www.securityfocus.com/bid/34408 vdb-entryx_refsource_BID
http://secunia.com/advisories/34640 third-party-advisoryx_refsource_SECUNIA
http://secunia.com/advisories/35074 third-party-advisoryx_refsource_SECUNIA
http://www.securitytracker.com/id?1021993 vdb-entryx_refsource_SECTRACK
http://sunsolve.sun.com/search/document.do?assetk… vendor-advisoryx_refsource_SUNALERT
http://security.gentoo.org/glsa/glsa-200904-09.xml vendor-advisoryx_refsource_GENTOO
http://support.novell.com/docs/Readmes/InfoDocume… x_refsource_MISC
http://www.vupen.com/english/advisories/2009/0976 vdb-entryx_refsource_VUPEN
http://lists.apple.com/archives/security-announce… vendor-advisoryx_refsource_APPLE
http://www.ubuntu.com/usn/usn-755-1 vendor-advisoryx_refsource_UBUNTU
http://www-01.ibm.com/support/docview.wss?uid=swg… x_refsource_CONFIRM
http://www.vupen.com/english/advisories/2009/1057 vdb-entryx_refsource_VUPEN
http://web.mit.edu/kerberos/advisories/MITKRB5-SA… x_refsource_CONFIRM
http://secunia.com/advisories/34617 third-party-advisoryx_refsource_SECUNIA
http://secunia.com/advisories/34628 third-party-advisoryx_refsource_SECUNIA
http://secunia.com/advisories/34734 third-party-advisoryx_refsource_SECUNIA
http://www.vupen.com/english/advisories/2009/2248 vdb-entryx_refsource_VUPEN
http://www.us-cert.gov/cas/techalerts/TA09-133A.html third-party-advisoryx_refsource_CERT
http://wiki.rpath.com/wiki/Advisories:rPSA-2009-0058 x_refsource_MISC
http://www.vupen.com/english/advisories/2009/1297 vdb-entryx_refsource_VUPEN
http://secunia.com/advisories/34622 third-party-advisoryx_refsource_SECUNIA
https://www.redhat.com/archives/fedora-package-an… vendor-advisoryx_refsource_FEDORA
https://www.redhat.com/archives/fedora-package-an… vendor-advisoryx_refsource_FEDORA
http://wiki.rpath.com/Advisories:rPSA-2009-0058 x_refsource_CONFIRM
http://www.securityfocus.com/archive/1/502546/100… mailing-listx_refsource_BUGTRAQ
http://secunia.com/advisories/34594 third-party-advisoryx_refsource_SECUNIA
http://www.vupen.com/english/advisories/2009/1106 vdb-entryx_refsource_VUPEN
http://marc.info/?l=bugtraq&m=124896429301168&w=2 vendor-advisoryx_refsource_HP
Date Public
2009-04-07 00:00
Show details on NVD website
To clipboard 

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\"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}]",
      "sourceIdentifier": "cve@mitre.org",
      "vendorComments": "[{\"organization\": \"Red Hat\", \"comment\": \"Not vulnerable. This issue did not affect the versions of krb5 as shipped with Red Hat Enterprise Linux 2.1, 3, 4, or 5.\", \"lastModified\": \"2009-04-09T00:00:00\"}]",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-189\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2009-0847\",\"sourceIdentifier\":\"cve@mitre.org\",\"published\":\"2009-04-09T00:30:00.280\",\"lastModified\":\"2026-04-23T00:35:47.467\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"The asn1buf_imbed function in the ASN.1 decoder in MIT Kerberos 5 (aka krb5) 1.6.3, when PK-INIT is used, allows remote attackers to cause a denial of service (application crash) via a crafted length value that triggers an erroneous malloc call, related to incorrect calculations with pointer arithmetic.\"},{\"lang\":\"es\",\"value\":\"La funci\u00f3n asnbuf_imbed en el decodificador ASN.1 en MIT Kerberos 5 (tambi\u00e9n conocido como krb5) v1.6.3 cuando se usa PK-INIT, permite a atacantes remotos provocar una denegaci\u00f3n de servicio (ca\u00edda de la aplicaci\u00f3n) a trav\u00e9s de un valor length modificado que provoca una llamada malloc err\u00f3nea, relativo a c\u00e1lculo err\u00f3neos con punto aritm\u00e9tico.\"}],\"metrics\":{\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:M/Au:N/C:N/I:N/A:P\",\"baseScore\":4.3,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"MEDIUM\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":8.6,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-189\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:mit:kerberos:5-1.6.3:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"032730AE-1E53-4CA2-96FD-AD60CD27F3CA\"}]}]}],\"references\":[{\"url\":\"http://lists.apple.com/archives/security-announce/2009/May/msg00002.html\",\"source\":\"cve@mitre.org\"},{\"url\":\"http://marc.info/?l=bugtraq\u0026m=124896429301168\u0026w=2\",\"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/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\"},{\"url\":\"http://secunia.com/advisories/35074\",\"source\":\"cve@mitre.org\"},{\"url\":\"http://security.gentoo.org/glsa/glsa-200904-09.xml\",\"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\",\"tags\":[\"Vendor 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Hat\",\"comment\":\"Not vulnerable. This issue did not affect the versions of krb5 as shipped with Red Hat Enterprise Linux 2.1, 3, 4, or 5.\",\"lastModified\":\"2009-04-09T00:00:00\"}]}}",
    "redhat_vex": {
      "current_release_date": "2026-06-27T17:14:14+00:00",
      "cve": "CVE-2009-0847",
      "id": "CVE-2009-0847",
      "initial_release_date": "2009-04-07T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "krb5: incorrect length check inside ASN.1 decoder (MITKRB5-SA-2009-001)",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2009/cve-2009-0847.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-07-17T14:33:10Z",
      "cve": "CVE-2009-0847",
      "id": "CVE-2009-0847",
      "initial_release_date": "2023-02-15T06:04:49Z",
      "product_status:recommended": "233",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2009-0847",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2009-0847.json",
      "version": "19"
    }
  }
}



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Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.


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.