MGASA-2020-0450

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    MGASA-2020-0450

    Published: 5 Dec 2020Last Modified: 16 Apr 2026
    Upstream:
    CVE-2020-26970

    Summary: Updated thunderbird packages fix security vulnerability

    Details: When reading SMTP server status codes, Thunderbird writes an integer value to a position on the stack that is intended to contain just one byte. Depending on processor architecture and stack layout, this leads to stack corruption that may be exploitable (CVE-2020-26970).

    References: https://advisories.mageia.org/MGASA-2020-0450.html, https://bugs.mageia.org/show_bug.cgi?id=27707, https://www.mozilla.org/en-US/security/advisories/mfsa2020-53/, https://www.thunderbird.net/en-US/thunderbird/78.5.1/releasenotes/

    Affected packages

    Package

    Name: thunderbird

    Purl: pkg:rpm/mageia/thunderbird?arch=source&distro=mageia-7

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -78.5.1-1.mga7

    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
    MGASA-2020-0450 | CVE-DB