UBUNTU-CVE-2019-11755

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UBUNTU-CVE-2019-11755

Summary:

Details: 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: https://ubuntu.com/security/CVE-2019-11755, https://www.mozilla.org/en-US/security/advisories/mfsa2019-32/#CVE-2019-11755, https://bugzilla.mozilla.org/show_bug.cgi?id=1240290, https://www.mozilla.org/security/advisories/mfsa2019-32/, https://ubuntu.com/security/notices/USN-4202-1, https://ubuntu.com/security/notices/USN-4335-1, https://www.cve.org/CVERecord?id=CVE-2019-11755