CVE ID:	CVE-2018-18509
Description:	A flaw during verification of certain S/MIME signatures causes emails to be shown in Thunderbird as having a valid digital signature, even if the shown message contents aren't covered by the signature. The flaw allows an attacker to reuse a valid S/MIME signature to craft an email message with arbitrary content. This vulnerability affects Thunderbird < 60.5.1.
Test IDs:	None available
Cross References:	Common Vulnerability Exposure (CVE) ID: CVE-2018-18509 http://seclists.org/fulldisclosure/2019/Apr/38 http://packetstormsecurity.com/files/152703/Johnny-You-Are-Fired.html https://bugzilla.mozilla.org/show_bug.cgi?id=1507218 https://github.com/RUB-NDS/Johnny-You-Are-Fired https://github.com/RUB-NDS/Johnny-You-Are-Fired/blob/master/paper/johnny-fired.pdf https://www.mozilla.org/security/advisories/mfsa2019-06/ http://www.openwall.com/lists/oss-security/2019/04/30/4 RedHat Security Advisories: RHSA-2019:1144 https://access.redhat.com/errata/RHSA-2019:1144 SuSE Security Announcement: openSUSE-SU-2019:1162 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00043.html