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    CVE-2019-11755

    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.

    Published:Sep 27, 2019
    Last Modified:Nov 21, 2024
    EPS:Sep 27, 2019
    EPSS Score:0.00406
    CVSS Score:7.5

    Affected Products

    Vendor
    Mozilla
    Product
    Thunderbird

    Exploits

    No exploit reference

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    References

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

    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