UBUNTU-CVE-2023-50762

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    UBUNTU-CVE-2023-50762

    Published: 20 Dec 2023Last Modified: 22 Apr 2026
    Upstream:
    CVE-2023-50762
    Aliases:
    USN-6563-1

    Summary:

    Details: When processing a PGP/MIME payload that contains digitally signed text, the first paragraph of the text was never shown to the user. This is because the text was interpreted as a MIME message and the first paragraph was always treated as an email header section. A digitally signed text from a different context, such as a signed GIT commit, could be used to spoof an email message. This vulnerability affects Thunderbird < 115.6.

    References: https://ubuntu.com/security/CVE-2023-50762, https://www.mozilla.org/en-US/security/advisories/mfsa2023-55/#CVE-2023-50762, https://bugzilla.mozilla.org/show_bug.cgi?id=1862625, https://www.mozilla.org/security/advisories/mfsa2023-55/, https://ubuntu.com/security/notices/USN-6563-1, https://www.cve.org/CVERecord?id=CVE-2023-50762

    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
    UBUNTU-CVE-2023-50762 | CVE-DB