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CVE-2021-43528 · cross-distro fix matrix

CVE-2021-43528: Thunderbird unexpectedly enabled JavaScript in the composition area. The JavaScript execution context was limited to this area and did not receive chrome-level privileges, but could be used as a stepping stone to further an attack with other vulnerabilities. This vulnerability affects Thunderbird <

Affects 8 Linux releases across 8 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2021-43528 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

  • thunderbird→ fixed in1:91.4.1-1~deb11u1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y thunderbird

Debian bookworm

Source: Debian Security Tracker

  • thunderbird→ fixed in1:91.4.0-1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y thunderbird

Debian trixie

Source: Debian Security Tracker

  • thunderbird→ fixed in1:91.4.0-1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y thunderbird

Alpine v3.20

Source: Alpine secdb

  • thunderbird→ fixed in91.4.0-r0
    apk update && apk add --upgrade thunderbird

Alpine v3.21

Source: Alpine secdb

  • thunderbird→ fixed in91.4.0-r0
    apk update && apk add --upgrade thunderbird

Alpine edge

Source: Alpine secdb

  • thunderbird→ fixed in91.4.0-r0
    apk update && apk add --upgrade thunderbird

Alpine v3.18

Source: Alpine secdb

  • thunderbird→ fixed in91.4.0-r0
    apk update && apk add --upgrade thunderbird

Alpine v3.19

Source: Alpine secdb

  • thunderbird→ fixed in91.4.0-r0
    apk update && apk add --upgrade thunderbird
Are YOU affected by CVE-2021-43528?

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