CVE-2010-4021

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{"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_5:1.7:*:*:*:*:*:*:*", "matchCriteriaId": "DFB1190E-BE7A-4C6B-862D-D5747C64E980", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.7 does not properly restrict the use of TGT credentials for armoring TGS requests, which might allow remote authenticated users to impersonate a client by rewriting an inner request, aka a \"KrbFastReq forgery issue.\""}, {"lang": "es", "value": "El Centro de distribuci\u00f3n de claves (KDC) en MIT Kerberos 5 (tambi\u00e9n conocido como krb5) v1.7 no restringe correctamente el uso de credenciales TGT para proteger solicitudes TGS, lo que podr\u00eda permitir a usuarios remotos autenticados suplantar a un cliente mediante la reescritura de una solicitud interior, tambi\u00e9n conocido como \" falsificaci\u00f3n KrbFastReq\""}], "id": "CVE-2010-4021", "lastModified": "2026-06-16T23:23:59.903", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "HIGH", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "NONE", "baseScore": 2.1, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:H/Au:S/C:N/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}]}, "published": "2010-12-02T16:22:21.240", "references": [{"source": "cve@mitre.org", "url": "http://kb.vmware.com/kb/1035108"}, {"source": "cve@mitre.org", "url": 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{"acknowledgement": "Red Hat would like to thank MIT Kerberos Team for reporting this issue.", "bugzilla": {"description": "krb5: KDC may issue unrequested tickets due to KrbFastReq forgery (MITKRB5-SA-2010-007)", "id": "648736", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=648736"}, "csaw": false, "cvss": {"cvss_base_score": "2.1", "cvss_scoring_vector": "AV:N/AC:H/Au:S/C:N/I:P/A:N", "status": "draft"}, "details": ["The Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.7 does not properly restrict the use of TGT credentials for armoring TGS requests, which might allow remote authenticated users to impersonate a client by rewriting an inner request, aka a \"KrbFastReq forgery issue.\""], "name": "CVE-2010-4021", "public_date": "2010-11-30T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2010-4021"], "statement": "Not vulnerable. This issue did not affect the versions of krb5 as shipped with Red Hat Enterprise Linux 4, 5, or 6.", "threat_severity": "Low"}

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