{"id":"CVE-2019-11727","details":"A vulnerability exists where it possible to force Network Security Services (NSS) to sign CertificateVerify with PKCS#1 v1.5 signatures when those are the only ones advertised by server in CertificateRequest in TLS 1.3. PKCS#1 v1.5 signatures should not be used for TLS 1.3 messages. This vulnerability affects Firefox \u003c 68.","modified":"2026-04-16T04:36:57.310192404Z","published":"2019-07-23T14:15:16.450Z","related":["SUSE-SU-2019:14246-1","SUSE-SU-2019:2515-1","SUSE-SU-2019:2545-1","SUSE-SU-2019:2620-1","SUSE-SU-2020:14418-1","openSUSE-SU-2019:2248-1","openSUSE-SU-2019:2249-1","openSUSE-SU-2019:2251-1","openSUSE-SU-2019:2260-1","openSUSE-SU-2024:10600-1","openSUSE-SU-2024:11058-1","openSUSE-SU-2024:14572-1"],"references":[{"type":"WEB","url":"http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00006.html"},{"type":"WEB","url":"http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00017.html"},{"type":"WEB","url":"http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00009.html"},{"type":"WEB","url":"http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00010.html"},{"type":"WEB","url":"http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00011.html"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2019:1951"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/201908-12"},{"type":"ADVISORY","url":"https://www.mozilla.org/security/advisories/mfsa2019-21/"},{"type":"REPORT","url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1552208"}],"affected":[{"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"fixed":"68.0"}]}],"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-11727.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"}]}