Decrypted S/MIME parts, when included in HTML crafted for an attack, can leak plaintext when included in a a HTML reply/forward. This vulnerability affects Thunderbird < 52.9.
https://www.debian.org/security/2018/dsa-4244
https://usn.ubuntu.com/3714-1/
https://security.gentoo.org/glsa/201811-13
https://lists.debian.org/debian-lts-announce/2018/07/msg00013.html
https://access.redhat.com/errata/RHSA-2018:2252
https://access.redhat.com/errata/RHSA-2018:2251
http://www.securityfocus.com/bid/104613
https://www.mozilla.org/security/advisories/mfsa2018-18/
https://bugzilla.mozilla.org/show_bug.cgi?id=1419417
Source: Mitre, NVD
Published: 2018-10-18
Updated: 2024-11-21
Base Score: 4.3
Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N
Severity: Medium
Base Score: 6.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
EPSS: 0.0046