CVE-2006-4434

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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:sendmail:sendmail:*:*:*:*:*:*:*:*", "matchCriteriaId": "59AD875A-87DA-43B2-87DB-DD7993118276", "versionEndExcluding": "8.13.8", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Use-after-free vulnerability in Sendmail before 8.13.8 allows remote attackers to cause a denial of service (crash) via a long \"header line\", which causes a previously freed variable to be referenced. NOTE: the original developer has disputed the severity of this issue, saying \"The only denial of service that is possible here is to fill up the disk with core dumps if the OS actually generates different core dumps (which is unlikely)... the bug is in the shutdown code (finis()) which leads directly to exit(3), i.e., the process would terminate anyway, no mail delivery or receiption is affected.\""}, {"lang": "es", "value": "Vulnerabilidad Utilizar-tras-liberar en Sendmail versiones anteriores a 8.13.8, permite a atacantes remotos provocar una denegaci\u00f3n de servicio (crash) mediante una \"header line\" larga, que provoca que una variable liberada anteriormente sea referenciada. \r\nNOTa: El desarrollador original ha impugnado la severidad de esta vulnerabilidad diciendo \"La \u00fanica denegaci\u00f3n de servicio posible aqu\u00ed, es llenar el disco con volcados de memoria si el Sistema Operativo genera diferentes volcados de memoria (que es improbable)... el error reside en el c\u00f3digo de apagado (finis()) que conduce directamente a exit(3), en este caso, el proceso terminar\u00eda de todas formas, no afecta a la distribuci\u00f3n ni recepci\u00f3n de correo\"."}], "id": "CVE-2006-4434", "lastModified": "2026-06-16T22:29:05.550", "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}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2006-08-29T00:04:00.000", "references": [{"source": "cve@mitre.org", "tags": ["Broken Link", "Patch", "Vendor Advisory"], "url": "http://secunia.com/advisories/21637"}, {"source": "cve@mitre.org", "tags": ["Broken Link", "Patch", "Vendor Advisory"], "url": "http://secunia.com/advisories/21641"}, {"source": "cve@mitre.org", "tags": ["Broken Link", "Vendor Advisory"], "url": "http://secunia.com/advisories/21696"}, {"source": "cve@mitre.org", "tags": ["Broken Link", "Vendor Advisory"], "url": "http://secunia.com/advisories/21700"}, {"source": "cve@mitre.org", "tags": ["Broken Link", "Vendor Advisory"], "url": "http://secunia.com/advisories/21749"}, {"source": 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