MGASA-2021-0427

    Dashboard / Vulnerabilities / MGASA-2021-0427

    MGASA-2021-0427

    Published: 23 Sept 2021Last Modified: 16 Apr 2026
    Upstream:
    CVE-2021-38493

    Summary: Updated thunderbird packages fix security vulnerability

    Details: Mozilla developers Tyson Smith and Gabriele Svelto reported memory safety bugs present in Thunderbird ESR 78.13. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code (CVE-2021-38493). The thunderbird package has been updated to the 91 branch. See the upstream release notes for details.

    References: https://advisories.mageia.org/MGASA-2021-0427.html, https://bugs.mageia.org/show_bug.cgi?id=29378, https://www.mozilla.org/en-US/security/advisories/mfsa2021-42/, https://www.thunderbird.net/en-US/thunderbird/91.0/releasenotes/, https://www.thunderbird.net/en-US/thunderbird/91.0.1/releasenotes/, https://www.thunderbird.net/en-US/thunderbird/91.0.2/releasenotes/, https://www.thunderbird.net/en-US/thunderbird/91.0.3/releasenotes/, https://www.thunderbird.net/en-US/thunderbird/91.1.0/releasenotes/, https://www.thunderbird.net/en-US/thunderbird/91.1.1/releasenotes/, https://access.redhat.com/errata/RHSA-2021:3494, https://bugs.mageia.org/show_bug.cgi?id=29471

    Affected packages

    Package

    Name: thunderbird

    Purl: pkg:rpm/mageia/thunderbird?arch=source&distro=mageia-8

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -91.1.1-1.mga8

    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-2021-0427 | CVE-DB