CVE-2019-11755

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    CVE-2019-11755

    Published: 27 Sept 2019Last Modified: 16 Apr 2026

    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: http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00010.html, https://seclists.org/bugtraq/2019/Nov/24, https://usn.ubuntu.com/4335-1/, http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00009.html, https://lists.debian.org/debian-lts-announce/2019/11/msg00017.html, https://usn.ubuntu.com/4202-1/, https://www.debian.org/security/2019/dsa-4571, https://www.mozilla.org/security/advisories/mfsa2019-32/, https://bugzilla.mozilla.org/show_bug.cgi?id=1240290

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2019-11755 | CVE-DB