CVE-2009-0021

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"datePublished": "2009-01-07T17:00:00.000Z", "dateReserved": "2008-12-15T00:00:00.000Z", "dateUpdated": "2024-08-07T04:17:10.427Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{}

{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "secalert@redhat.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:ntp:ntp:*:*:*:*:*:*:*:*", "matchCriteriaId": "94D9BEE4-25C2-4147-B075-50F46113F59E", "versionEndIncluding": "4.2.4p4", "vulnerable": true}, {"criteria": "cpe:2.3:a:ntp:ntp:4.2.0:*:*:*:*:*:*:*", "matchCriteriaId": "088BFFA4-1AAB-4699-9793-F731A81B296A", "vulnerable": true}, {"criteria": "cpe:2.3:a:ntp:ntp:4.2.2:*:*:*:*:*:*:*", "matchCriteriaId": "B3475779-383A-4128-9145-474EC08030FE", "vulnerable": true}, {"criteria": "cpe:2.3:a:ntp:ntp:4.2.4p1:*:*:*:*:*:*:*", "matchCriteriaId": "B980A178-2958-4B36-8AD8-3932B12C5A72", "vulnerable": true}, {"criteria": "cpe:2.3:a:ntp:ntp:4.2.4p2:*:*:*:*:*:*:*", "matchCriteriaId": "5D65210A-F80E-4019-91DA-49838369E03F", "vulnerable": true}, {"criteria": "cpe:2.3:a:ntp:ntp:4.2.4p3:*:*:*:*:*:*:*", "matchCriteriaId": "29FAB224-3493-4273-A655-10BE44F5B5BE", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "NTP 4.2.4 before 4.2.4p5 and 4.2.5 before 4.2.5p150 does not properly check the return value from the OpenSSL EVP_VerifyFinal function, which allows remote attackers to bypass validation of the certificate chain via a malformed SSL/TLS signature for DSA and ECDSA keys, a similar vulnerability to CVE-2008-5077."}, {"lang": "es", "value": "NTP versiones 4.2.4 anteriores a 4.2.4p5 y versiones 4.2.5 anteriores a 4.2.5p150, no comprueba apropiadamente el valor devuelto de la funci\u00f3n EVP_VerifyFinal de OpenSSL, que permite a los atacantes remotos omitir la comprobaci\u00f3n de la cadena de certificados por medio de una firma de SSL/TLS malformada para las claves DSA y ECDSA, una vulnerabilidad similar a CVE-2008-5077."}], "evaluatorComment": "Note that versions 4.2.5 before 4.2.5p150 are development versions and not production versions. Development versions are not included in the CPE configuration for CVEs.", "id": "CVE-2009-0021", "lastModified": "2026-06-16T23:04:05.973", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 5.0, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}]}, "published": "2009-01-07T17:30:00.360", "references": [{"source": "secalert@redhat.com", "url": "http://lists.apple.com/archives/security-announce/2009/May/msg00002.html"}, {"source": "secalert@redhat.com", "url": 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{"affected_release": [{"advisory": "RHSA-2009:0046", "cpe": "cpe:/o:redhat:enterprise_linux:4", "package": "ntp-0:4.2.0.a.20040617-8.el4_7.1", "product_name": "Red Hat Enterprise Linux 4", "release_date": "2009-01-29T00:00:00Z"}, {"advisory": "RHSA-2009:0046", "cpe": "cpe:/o:redhat:enterprise_linux:5", "package": "ntp-0:4.2.2p1-9.el5_3.1", "product_name": "Red Hat Enterprise Linux 5", "release_date": "2009-01-29T00:00:00Z"}], "bugzilla": {"description": "ntp incorrectly checks for malformed signatures", "id": "476807", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=476807"}, "csaw": false, "cvss": {"cvss_base_score": "4.3", "cvss_scoring_vector": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "status": "verified"}, "details": ["NTP 4.2.4 before 4.2.4p5 and 4.2.5 before 4.2.5p150 does not properly check the return value from the OpenSSL EVP_VerifyFinal function, which allows remote attackers to bypass validation of the certificate chain via a malformed SSL/TLS signature for DSA and ECDSA keys, a similar vulnerability to CVE-2008-5077."], "name": "CVE-2009-0021", "public_date": "2009-01-07T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2009-0021\nhttps://nvd.nist.gov/vuln/detail/CVE-2009-0021"], "threat_severity": "Moderate"}

{}