UBUNTU-CVE-2023-50761

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    UBUNTU-CVE-2023-50761

    Published: 20 Dec 2023Last Modified: 22 Apr 2026
    Upstream:
    CVE-2023-50761
    Aliases:
    USN-6563-1

    Summary:

    Details: The signature of a digitally signed S/MIME email message may optionally specify the signature creation date and time. If present, Thunderbird did not compare the signature creation date with the message date and time, and displayed a valid signature despite a date or time mismatch. This could be used to give recipients the impression that a message was sent at a different date or time. This vulnerability affects Thunderbird < 115.6.

    References: https://ubuntu.com/security/CVE-2023-50761, https://www.mozilla.org/en-US/security/advisories/mfsa2023-55/#CVE-2023-50761, https://bugzilla.mozilla.org/show_bug.cgi?id=1865647, https://www.mozilla.org/security/advisories/mfsa2023-55/, https://ubuntu.com/security/notices/USN-6563-1, https://www.cve.org/CVERecord?id=CVE-2023-50761

    Affected packages

    Package

    Name: thunderbird

    Purl: pkg:deb/ubuntu/thunderbird@1:115.6.0+build2-0ubuntu0.20.04.1?arch=source&distro=focal

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1:115.6.0+build2-0ubuntu0.20.04.1

    Affected versions

    1:68.1.2+build1-0ubuntu1
    1:68.1.2+build1-0ubuntu2

    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
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