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CVE-2022-21716 · cross-distro fix matrix

CVE-2022-21716: Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to 22.2.0, Twisted SSH client and server implement is able to accept an infinite amount of data for the peer's SSH version identifier. This ends up with a buffer using all the available memory. The attach is

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

Fix per ecosystem

Each block below is a distro release where CVE-2022-21716 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

  • twisted→ fixed in20.3.0-7+deb11u1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y twisted

Debian bookworm

Source: Debian Security Tracker

  • twisted→ fixed in22.2.0-1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y twisted

Debian trixie

Source: Debian Security Tracker

  • twisted→ fixed in22.2.0-1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y twisted

Alpine v3.20

Source: Alpine secdb

  • py3-twisted→ fixed in22.2.0-r0
    apk update && apk add --upgrade py3-twisted

Alpine v3.21

Source: Alpine secdb

  • py3-twisted→ fixed in22.2.0-r0
    apk update && apk add --upgrade py3-twisted

Alpine edge

Source: Alpine secdb

  • py3-twisted→ fixed in22.2.0-r0
    apk update && apk add --upgrade py3-twisted

Alpine v3.18

Source: Alpine secdb

  • py3-twisted→ fixed in22.2.0-r0
    apk update && apk add --upgrade py3-twisted

Alpine v3.19

Source: Alpine secdb

  • py3-twisted→ fixed in22.2.0-r0
    apk update && apk add --upgrade py3-twisted
Are YOU affected by CVE-2022-21716?

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