Description
A crafted S/MIME message consisting of an inner encryption layer and an outer SignedData layer was shown as having a valid digital signature, although the signer might have had no access to the contents of the encrypted message, and might have stripped a different signature from the encrypted message. Previous versions had only suppressed showing a digital signature for messages with an outer multipart/signed layer. This vulnerability affects Thunderbird < 68.1.1.
References (9)
Core 9
Core References
Issue Tracking, Permissions Required, Vendor Advisory x_refsource_misc
https://bugzilla.mozilla.org/show_bug.cgi?id=1240290
Vendor Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2019-32/
Mailing List vendor-advisory
x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00010.html
Mailing List vendor-advisory
x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00009.html
Mailing List mailing-list
x_refsource_bugtraq
https://seclists.org/bugtraq/2019/Nov/24
Third Party Advisory vendor-advisory
x_refsource_debian
https://www.debian.org/security/2019/dsa-4571
Mailing List mailing-list
x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2019/11/msg00017.html
Vendor Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/4202-1/
Vendor Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/4335-1/
Scores
CVSS v3
7.5
EPSS
0.0041
EPSS Percentile
61.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Details
CWE
CWE-347
Status
published
Products (1)
mozilla/thunderbird
< 68.1.1
Published
Sep 27, 2019
Tracked Since
Feb 18, 2026