CVE-2017-16944

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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:exim:exim:4.88:*:*:*:*:*:*:*", "matchCriteriaId": "5B8BC538-1714-4D9D-A97F-FCA2EA745DE7", "vulnerable": true}, {"criteria": "cpe:2.3:a:exim:exim:4.89:*:*:*:*:*:*:*", "matchCriteriaId": "49F1EE32-946A-4C57-B672-0127E012FC8D", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*", "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The receive_msg function in receive.c in the SMTP daemon in Exim 4.88 and 4.89 allows remote attackers to cause a denial of service (infinite loop and stack exhaustion) via vectors involving BDAT commands and an improper check for a '.' character signifying the end of the content, related to the bdat_getc function."}, {"lang": "es", "value": "La funci\u00f3n receive_msg en receive.c en el demonio SMTP en Exim 4.88 y 4.89 permite que atacantes remotos provoquen una denegaci\u00f3n de servicio (bucle infinito y agotamiento de pila) mediante vectores relacionados con comandos BDAT y una comprobaci\u00f3n infinita para un car\u00e1cter \".\" que implique el fin del contexto. Esto se relaciona con la funci\u00f3n bdat_getc."}], "id": "CVE-2017-16944", "lastModified": "2026-06-17T01:10:11.463", "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}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.0"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2017-11-25T17:29:00.307", "references": [{"source": "cve@mitre.org", "tags": ["Mailing List"], "url": "http://openwall.com/lists/oss-security/2017/11/25/1"}, {"source": "cve@mitre.org", "tags": ["Mailing List"], "url": "http://openwall.com/lists/oss-security/2017/11/25/2"}, {"source": "cve@mitre.org", "tags": ["Mailing List"], "url": "http://openwall.com/lists/oss-security/2017/11/25/3"}, {"source": "cve@mitre.org", "url": "http://www.openwall.com/lists/oss-security/2021/05/04/7"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securitytracker.com/id/1039873"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Issue Tracking"], "url": "https://bugs.exim.org/show_bug.cgi?id=2201"}, {"source": "cve@mitre.org", "tags": ["Mailing List"], "url": "https://lists.exim.org/lurker/message/20171125.034842.d1d75cac.en.html"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2017/dsa-4053"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://www.exploit-db.com/exploits/43184/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List"], "url": "http://openwall.com/lists/oss-security/2017/11/25/1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List"], "url": "http://openwall.com/lists/oss-security/2017/11/25/2"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List"], "url": "http://openwall.com/lists/oss-security/2017/11/25/3"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.openwall.com/lists/oss-security/2021/05/04/7"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securitytracker.com/id/1039873"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Issue Tracking"], "url": "https://bugs.exim.org/show_bug.cgi?id=2201"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List"], "url": "https://lists.exim.org/lurker/message/20171125.034842.d1d75cac.en.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2017/dsa-4053"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://www.exploit-db.com/exploits/43184/"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-835"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "exim: infinite loop and stack exhaustion in receive_msg function via vectors involving BDAT commands", "id": "1517684", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1517684"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-835", "details": ["The receive_msg function in receive.c in the SMTP daemon in Exim 4.88 and 4.89 allows remote attackers to cause a denial of service (infinite loop and stack exhaustion) via vectors involving BDAT commands and an improper check for a '.' character signifying the end of the content, related to the bdat_getc function."], "name": "CVE-2017-16944", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "exim", "product_name": "Red Hat Enterprise Linux 5"}], "public_date": "2017-11-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2017-16944\nhttps://nvd.nist.gov/vuln/detail/CVE-2017-16944"], "threat_severity": "Important"}

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