{"id":"CVE-2003-0147","url":"https://www.cyber-defence.io/tools/cve/CVE-2003-0147","generatedAt":"2026-10-27T17:29:57.111Z","title":"OpenSSL does not use RSA blinding by default, which allows local and remote attackers to obtain the server's private key by determining factors using timing differences on (1) the number of extra reductions during Montgomery reduction, and (2) the use…","description":"OpenSSL does not use RSA blinding by default, which allows local and remote attackers to obtain the server's private key by determining factors using timing differences on (1) the number of extra reductions during Montgomery reduction, and (2) the use of different integer multiplication algorithms (\"Karatsuba\" and normal).","published":"2003-03-31T05:00:00.000Z","lastModified":"2026-06-16T22:01:39.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"2.0","score":5,"severity":"MEDIUM","vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N"},"cwe":[],"affected":["openpkg/openpkg","openssl/openssl","stunnel/stunnel"],"epss":{"score":0.07064,"percentile":0.94162,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (7.06%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"ftp://ftp.sco.com/pub/security/OpenLinux/CSSA-2003-014.0.txt","source":"cve@mitre.org"},{"url":"ftp://patches.sgi.com/support/free/security/advisories/20030501-01-I","source":"cve@mitre.org"},{"url":"http://archives.neohapsis.com/archives/vulnwatch/2003-q1/0130.html","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"http://crypto.stanford.edu/~dabo/papers/ssl-timing.pdf","source":"cve@mitre.org"},{"url":"http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000625","source":"cve@mitre.org"},{"url":"http://marc.info/?l=bugtraq&m=104766550528628&w=2","source":"cve@mitre.org"},{"url":"http://marc.info/?l=bugtraq&m=104792570615648&w=2","source":"cve@mitre.org"},{"url":"http://marc.info/?l=bugtraq&m=104819602408063&w=2","source":"cve@mitre.org"},{"url":"http://marc.info/?l=bugtraq&m=104829040921835&w=2","source":"cve@mitre.org"},{"url":"http://marc.info/?l=bugtraq&m=104861762028637&w=2","source":"cve@mitre.org"},{"url":"http://www.debian.org/security/2003/dsa-288","source":"cve@mitre.org"},{"url":"http://www.gentoo.org/security/en/glsa/glsa-200303-23.xml","source":"cve@mitre.org"},{"url":"http://www.kb.cert.org/vuls/id/997481","tags":["Third Party Advisory","US Government Resource"],"source":"cve@mitre.org"},{"url":"http://www.mandrakesecure.net/en/advisories/advisory.php?name=MDKSA-2003:035","source":"cve@mitre.org"},{"url":"http://www.openpkg.com/security/advisories/OpenPKG-SA-2003.019.html","source":"cve@mitre.org"},{"url":"http://www.openssl.org/news/secadv_20030317.txt","source":"cve@mitre.org"},{"url":"http://www.redhat.com/support/errata/RHSA-2003-101.html","source":"cve@mitre.org"},{"url":"http://www.redhat.com/support/errata/RHSA-2003-102.html","source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/archive/1/316165/30/25370/threaded","source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/archive/1/316165/30/25370/threaded","source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/archive/1/316165/30/25370/threaded","source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/archive/1/316165/30/25370/threaded","source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/archive/1/316577/30/25310/threaded","source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/archive/1/316577/30/25310/threaded","source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/archive/1/316577/30/25310/threaded","source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/archive/1/316577/30/25310/threaded","source":"cve@mitre.org"},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A466","source":"cve@mitre.org"},{"url":"ftp://ftp.sco.com/pub/security/OpenLinux/CSSA-2003-014.0.txt","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"ftp://patches.sgi.com/support/free/security/advisories/20030501-01-I","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://archives.neohapsis.com/archives/vulnwatch/2003-q1/0130.html","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://crypto.stanford.edu/~dabo/papers/ssl-timing.pdf","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000625","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://marc.info/?l=bugtraq&m=104766550528628&w=2","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://marc.info/?l=bugtraq&m=104792570615648&w=2","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://marc.info/?l=bugtraq&m=104819602408063&w=2","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://marc.info/?l=bugtraq&m=104829040921835&w=2","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://marc.info/?l=bugtraq&m=104861762028637&w=2","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.debian.org/security/2003/dsa-288","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.gentoo.org/security/en/glsa/glsa-200303-23.xml","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.kb.cert.org/vuls/id/997481","tags":["Third 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Resource"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.mandrakesecure.net/en/advisories/advisory.php?name=MDKSA-2003:035","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openpkg.com/security/advisories/OpenPKG-SA-2003.019.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openssl.org/news/secadv_20030317.txt","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.redhat.com/support/errata/RHSA-2003-101.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.redhat.com/support/errata/RHSA-2003-102.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/archive/1/316165/30/25370/threaded","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/archive/1/316165/30/25370/threaded","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/archive/1/316165/30/25370/threaded","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/archive/1/316165/30/25370/threaded","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/archive/1/316577/30/25310/threaded","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/archive/1/316577/30/25310/threaded","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/archive/1/316577/30/25310/threaded","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/archive/1/316577/30/25310/threaded","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A466","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2003-0147","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}