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.
Upstream:released (68.1.1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):needed
Ubuntu 18.04 LTS (Bionic Beaver):released (1:68.2.1+build1-0ubuntu0.18.04.1)
Ubuntu 19.04 (Disco Dingo):needed
Ubuntu 19.10 (Eoan Ermine):released (1:68.1.1+build1-0ubuntu1)
Ubuntu 20.04 (Focal Fossa):not-affected (1:68.1.2+build1-0ubuntu1)
More Information

Updated: 2019-12-05 19:59:06 UTC (commit 0aa5e7c87c8b55d2ec5c7f4ca1179cf75de91961)