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CVE-2021-29969

CVE-2021-29969

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

If Thunderbird was configured to use STARTTLS for an IMAP connection, and an attacker injected IMAP server responses prior to the completion of the STARTTLS handshake, then Thunderbird didn't ignore the injected data. This could have resulted in Thunderbird showing incorrect information, for example the attacker could have tricked Thunderbird to show folders that didn't exist on the IMAP server. This vulnerability affects Thunderbird < 78.12.

CVSS 5.9 · Medium · EPSS 1.2% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • thunderbird

    Versions
    • ≥ unspecified, < 78.12: Affected (custom)

    Update to 78.12

  • thunderbird Debian:12

    Affected ranges
    • ECOSYSTEM: < 1:78.12.0-1

    Update to 1:78.12.0-1

  • thunderbird Debian:13

    Affected ranges
    • ECOSYSTEM: < 1:78.12.0-1

    Update to 1:78.12.0-1

  • thunderbird Debian:14

    Affected ranges
    • ECOSYSTEM: < 1:78.12.0-1

    Update to 1:78.12.0-1

  • 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
    • 1:78.8.1+build1-0ubuntu0.18.04.1
    • 1:78.11.0+build1-0ubuntu0.18.04.2
    Affected ranges
    • ECOSYSTEM: < 1:78.13.0+build1-0ubuntu0.18.04.1

    Update to 1:78.13.0+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
    • 1:78.7.1+build1-0ubuntu0.20.04.1
    • 1:78.8.1+build1-0ubuntu0.20.04.1
    • 1:78.11.0+build1-0ubuntu0.20.04.2
    Affected ranges
    • ECOSYSTEM: < 1:78.13.0+build1-0ubuntu0.20.04.2

    Update to 1:78.13.0+build1-0ubuntu0.20.04.2

Original sources

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