{"id":"CVE-2016-5420","details":"curl and libcurl before 7.50.1 do not check the client certificate when choosing the TLS connection to reuse, which might allow remote attackers to hijack the authentication of the connection by leveraging a previously created connection with a different client certificate.","aliases":["CURL-CVE-2016-5420"],"modified":"2026-09-10T03:45:05.224051488Z","published":"2016-08-10T14:59:05.080Z","related":["SUSE-SU-2016:2155-1","SUSE-SU-2016:2330-1","SUSE-SU-2016:2449-1","SUSE-SU-2016:2700-1","SUSE-SU-2017:2699-1","SUSE-SU-2017:2700-1"],"database_specific":{"unresolved_ranges":[{"vendor_product":"debian:debian_linux","cpes":["cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"8.0"},{"last_affected":"8.0"}],"source":"CPE_STRING"},{"extracted_events":[{"introduced":"42.1"},{"last_affected":"42.1"}],"source":"CPE_STRING","vendor_product":"opensuse:leap","cpes":["cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:*"]}]},"references":[{"type":"WEB","url":"http://lists.opensuse.org/opensuse-updates/2016-09/msg00011.html"},{"type":"WEB","url":"http://www.securityfocus.com/bid/92309"},{"type":"WEB","url":"http://www.securitytracker.com/id/1036537"},{"type":"WEB","url":"http://www.securitytracker.com/id/1036739"},{"type":"WEB","url":"http://www.slackware.com/security/viewer.php?l=slackware-security&y=2016&m=slackware-security.563059"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GLPXQQKURBQFM4XM6645VRPTOE2AWG33/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K3GQH4V3XAQ5Z53AMQRDEC3C3UHTW7QR/"},{"type":"WEB","url":"https://source.android.com/security/bulletin/2016-12-01.html"},{"type":"WEB","url":"https://www.tenable.com/security/tns-2016-18"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-updates/2016-09/msg00094.html"},{"type":"ADVISORY","url":"http://rhn.redhat.com/errata/RHSA-2016-2575.html"},{"type":"ADVISORY","url":"http://rhn.redhat.com/errata/RHSA-2016-2957.html"},{"type":"ADVISORY","url":"http://www.debian.org/security/2016/dsa-3638"},{"type":"ADVISORY","url":"http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html"},{"type":"ADVISORY","url":"http://www.ubuntu.com/usn/USN-3048-1"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2018:3558"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/201701-47"},{"type":"FIX","url":"https://curl.haxx.se/docs/adv_20160803B.html"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/curl/curl","events":[{"introduced":"0"},{"last_affected":"8cef7763b41d3e0566254aae521a5f5ebec2afd8"}],"database_specific":{"cpe":"cpe:2.3:a:haxx:libcurl:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"last_affected":"7.50.0"}],"source":"CPE_RANGE"}}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2016-5420.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"}]}