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CVE-2020-26970

CVE-2020-26970

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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. This vulnerability affects Thunderbird < 78.5.1.

CVSS 8.8 · High · EPSS 1.2% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • thunderbird

    Versions
    • < 78.5.1: Affected

    No fix published

  • thunderbird Debian:12

    Affected ranges
    • ECOSYSTEM: < 1:78.5.1-1

    Update to 1:78.5.1-1

  • thunderbird Debian:13

    Affected ranges
    • ECOSYSTEM: < 1:78.5.1-1

    Update to 1:78.5.1-1

  • thunderbird Debian:14

    Affected ranges
    • ECOSYSTEM: < 1:78.5.1-1

    Update to 1:78.5.1-1

  • thunderbird Ubuntu:18.04:LTS

    Versions
    • 1:52.4.0+build1-0ubuntu2
    • 1:52.6.0+build1-0ubuntu1
    • 1:52.7.0+build1-0ubuntu1
    • 1:52.8.0+build1-0ubuntu0.18.04.1
    • 1:52.9.1+build3-0ubuntu0.18.04.1
    • 1:60.2.1+build1-0ubuntu0.18.04.2
    • 1:60.4.0+build2-0ubuntu0.18.04.1
    • 1:60.5.1+build2-0ubuntu0.18.04.1
    • 1:60.6.1+build2-0ubuntu0.18.04.1
    • 1:60.7.0+build1-0ubuntu0.18.04.1
    • 1:60.7.1+build1-0ubuntu0.18.04.1
    • 1:60.7.2+build2-0ubuntu0.18.04.1
    • 1:60.8.0+build1-0ubuntu0.18.04.1
    • 1:60.9.0+build1-0ubuntu0.18.04.1
    • 1:68.2.1+build1-0ubuntu0.18.04.1
    • 1:68.2.2+build1-0ubuntu0.18.04.1
    • 1:68.4.1+build1-0ubuntu0.18.04.1
    • 1:68.7.0+build1-0ubuntu0.18.04.1
    • 1:68.8.0+build2-0ubuntu0.18.04.2
    • 1:68.10.0+build1-0ubuntu0.18.04.1
    Affected ranges
    • ECOSYSTEM: < 1:78.8.1+build1-0ubuntu0.18.04.1

    Update to 1:78.8.1+build1-0ubuntu0.18.04.1

  • thunderbird Ubuntu:20.04:LTS

    Versions
    • 1:68.1.2+build1-0ubuntu1
    • 1:68.1.2+build1-0ubuntu2
    • 1:68.2.1+build1-0ubuntu1
    • 1:68.2.2+build1-0ubuntu1
    • 1:68.3.0+build2-0ubuntu1
    • 1:68.3.1+build1-0ubuntu2
    • 1:68.4.1+build1-0ubuntu1
    • 1:68.4.2+build2-0ubuntu1
    • 1:68.5.0+build1-0ubuntu1
    • 1:68.6.0+build2-0ubuntu1
    • 1:68.7.0+build1-0ubuntu1
    • 1:68.7.0+build1-0ubuntu2
    • 1:68.8.0+build2-0ubuntu0.20.04.2
    • 1:68.10.0+build1-0ubuntu0.20.04.1
    Affected ranges
    • ECOSYSTEM: < 1:78.7.1+build1-0ubuntu0.20.04.1

    Update to 1:78.7.1+build1-0ubuntu0.20.04.1

Original sources

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