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CVE-2020-26970 · cross-distro fix matrix

CVE-2020-26970: 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

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

Fix per ecosystem

Each block below is a distro release where CVE-2020-26970 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

  • thunderbird→ fixed in1:78.5.1-1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y thunderbird

Debian bookworm

Source: Debian Security Tracker

  • thunderbird→ fixed in1:78.5.1-1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y thunderbird

Debian trixie

Source: Debian Security Tracker

  • thunderbird→ fixed in1:78.5.1-1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y thunderbird

Alpine v3.20

Source: Alpine secdb

  • thunderbird→ fixed in78.5.1-r0
    apk update && apk add --upgrade thunderbird

Alpine v3.21

Source: Alpine secdb

  • thunderbird→ fixed in78.5.1-r0
    apk update && apk add --upgrade thunderbird

Alpine edge

Source: Alpine secdb

  • thunderbird→ fixed in78.5.1-r0
    apk update && apk add --upgrade thunderbird

Alpine v3.18

Source: Alpine secdb

  • thunderbird→ fixed in78.5.1-r0
    apk update && apk add --upgrade thunderbird

Alpine v3.19

Source: Alpine secdb

  • thunderbird→ fixed in78.5.1-r0
    apk update && apk add --upgrade thunderbird
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