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. External References: https://bugzilla.mozilla.org/show_bug.cgi?id=1240290 https://www.mozilla.org/en-US/security/advisories/mfsa2019-32/#CVE-2019-11755 http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00009.html http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00010.html
Created thunderbird tracking bugs for this issue: Affects: fedora-all [bug 1762985]
This vulnerability was reported in Thunderbird 68.1; Thunderbird 60.9 appears to be not affected.
External References: https://www.mozilla.org/en-US/security/advisories/mfsa2019-32/
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s): https://access.redhat.com/security/cve/cve-2019-11755