{"id":"CVE-2014-3511","url":"https://www.cyber-defence.io/tools/cve/CVE-2014-3511","generatedAt":"2026-11-05T06:53:27.396Z","title":"The ssl23_get_client_hello function in s23_srvr.c in OpenSSL 1.0.1 before 1.0.1i allows man-in-the-middle attackers to force the use of TLS 1.0 by triggering ClientHello message fragmentation in communication between a client and server that both…","description":"The ssl23_get_client_hello function in s23_srvr.c in OpenSSL 1.0.1 before 1.0.1i allows man-in-the-middle attackers to force the use of TLS 1.0 by triggering ClientHello message fragmentation in communication between a client and server that both support later TLS versions, related to a \"protocol downgrade\" issue.","published":"2014-08-13T23:55:08.000Z","lastModified":"2026-06-17T00:08:21.000Z","status":"Modified","sourceIdentifier":"secalert@redhat.com","cvss":{"version":"2.0","score":4.3,"severity":"MEDIUM","vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N"},"cwe":[],"affected":["openssl/openssl"],"epss":{"score":0.14129,"percentile":0.96585,"date":"2026-11-04","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 14.1%, higher than 97% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2014-008.txt.asc","source":"secalert@redhat.com"},{"url":"http://aix.software.ibm.com/aix/efixes/security/openssl_advisory10.asc","source":"secalert@redhat.com"},{"url":"http://linux.oracle.com/errata/ELSA-2014-1052.html","source":"secalert@redhat.com"},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2014-August/136470.html","source":"secalert@redhat.com"},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2014-August/136473.html","source":"secalert@redhat.com"},{"url":"http://lists.opensuse.org/opensuse-updates/2014-08/msg00036.html","source":"secalert@redhat.com"},{"url":"http://marc.info/?l=bugtraq&m=142350350616251&w=2","source":"secalert@redhat.com"},{"url":"http://marc.info/?l=bugtraq&m=142495837901899&w=2","source":"secalert@redhat.com"},{"url":"http://marc.info/?l=bugtraq&m=142624590206005&w=2","source":"secalert@redhat.com"},{"url":"http://marc.info/?l=bugtraq&m=142660345230545&w=2","source":"secalert@redhat.com"},{"url":"http://marc.info/?l=bugtraq&m=142791032306609&w=2","source":"secalert@redhat.com"},{"url":"http://marc.info/?l=bugtraq&m=143290437727362&w=2","source":"secalert@redhat.com"},{"url":"http://marc.info/?l=bugtraq&m=143290522027658&w=2","source":"secalert@redhat.com"},{"url":"http://rhn.redhat.com/errata/RHSA-2015-0126.html","source":"secalert@redhat.com"},{"url":"http://rhn.redhat.com/errata/RHSA-2015-0197.html","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/58962","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/59700","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/59710","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/59756","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/59887","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/60022","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/60221","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/60377","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/60493","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/60684","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/60803","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/60810","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/60890","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/60917","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/60921","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/60938","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/61017","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/61043","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/61100","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/61139","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/61184","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/61775","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/61959","source":"secalert@redhat.com"},{"url":"http://security.gentoo.org/glsa/glsa-201412-39.xml","source":"secalert@redhat.com"},{"url":"http://support.f5.com/kb/en-us/solutions/public/15000/500/sol15564.html","source":"secalert@redhat.com"},{"url":"http://www-01.ibm.com/support/docview.wss?uid=nas8N1020240","source":"secalert@redhat.com"},{"url":"http://www-01.ibm.com/support/docview.wss?uid=swg21682293","source":"secalert@redhat.com"},{"url":"http://www-01.ibm.com/support/docview.wss?uid=swg21683389","source":"secalert@redhat.com"},{"url":"http://www-01.ibm.com/support/docview.wss?uid=swg21686997","source":"secalert@redhat.com"},{"url":"http://www.arubanetworks.com/support/alerts/aid-08182014.txt","source":"secalert@redhat.com"},{"url":"http://www.debian.org/security/2014/dsa-2998","source":"secalert@redhat.com"},{"url":"http://www.huawei.com/en/security/psirt/security-bulletins/security-advisories/hw-372998.htm","source":"secalert@redhat.com"},{"url":"http://www.securityfocus.com/bid/69079","source":"secalert@redhat.com"},{"url":"http://www.securitytracker.com/id/1030693","source":"secalert@redhat.com"},{"url":"http://www.splunk.com/view/SP-CAAANHS","source":"secalert@redhat.com"},{"url":"http://www.tenable.com/security/tns-2014-06","source":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1127504","source":"secalert@redhat.com"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/95162","source":"secalert@redhat.com"},{"url":"https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commit%3Bh=280b1f1ad12131defcd986676a8fc9717aaa601b","source":"secalert@redhat.com"},{"url":"https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05150888","source":"secal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BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}