{"id":"CVE-2014-3509","url":"https://www.cyber-defence.io/tools/cve/CVE-2014-3509","generatedAt":"2026-11-05T06:53:29.527Z","title":"Race condition in the ssl_parse_serverhello_tlsext function in t1_lib.c in OpenSSL 1.0.0 before 1.0.0n and 1.0.1 before 1.0.1i, when multithreading and session resumption are used, allows remote SSL servers to cause a denial of service (memory overwrite…","description":"Race condition in the ssl_parse_serverhello_tlsext function in t1_lib.c in OpenSSL 1.0.0 before 1.0.0n and 1.0.1 before 1.0.1i, when multithreading and session resumption are used, allows remote SSL servers to cause a denial of service (memory overwrite and client application crash) or possibly have unspecified other impact by sending Elliptic Curve (EC) Supported Point Formats Extension data.","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":6.8,"severity":"MEDIUM","vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P"},"cwe":["CWE-362"],"affected":["openssl/openssl"],"epss":{"score":0.12911,"percentile":0.96319,"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 12.9%, higher than 96% 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-2015-0197.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/60022","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/60221","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/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/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://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.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.mandriva.com/security/advisories?name=MDVSA-2014:158","source":"secalert@redhat.com"},{"url":"http://www.securityfocus.com/bid/69084","source":"secalert@redhat.com"},{"url":"http://www.securitytracker.com/id/1030693","source":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1127498","source":"secalert@redhat.com"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/95159","source":"secalert@redhat.com"},{"url":"https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commit%3Bh=fb0bc2b273bcc2d5401dd883fe869af4fc74bb21","source":"secalert@redhat.com"},{"url":"https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05150888","source":"secalert@redhat.com"},{"url":"https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05158380","source":"secalert@redhat.com"},{"url":"https://lists.balabit.hu/pipermail/syslog-ng-announce/2014-September/000196.html","source":"secalert@redhat.com"},{"url":"https://support.citrix.com/article/CTX216642","source":"secalert@redhat.com"},{"url":"https://techzone.ergon.ch/CVE-2014-3511","source":"secalert@redhat.com"},{"url":"https://www.freebsd.org/security/advisories/FreeBSD-SA-14:18.openssl.asc","source":"secalert@redhat.com"},{"url":"https://www.openssl.org/news/secadv_20140806.txt","tags":["Vendor Advisory"],"source":"secalert@redhat.com"},{"url":"ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2014-008.txt.asc","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://aix.software.ibm.com/aix/efixes/security/openssl_advisory10.asc","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://linux.oracle.com/errata/ELSA-2014-1052.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2014-August/136470.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2014-August/136473.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-updates/2014-08/msg00036.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://marc.info/?l=bugtraq&m=142350350616251&w=2","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://marc.info/?l=bugtraq&m=142495837901899&w=2","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2014-3509","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."}