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CVE-2020-8631 · cross-distro fix matrix

CVE-2020-8631: cloud-init through 19.4 relies on Mersenne Twister for a random password, which makes it easier for attackers to predict passwords, because rand_str in cloudinit/util.py calls the random.choice function.

Affects 3 Linux releases across 3 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2020-8631 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

  • cloud-init→ fixed in19.4-2urgency: not yet assigned
    sudo apt-get install --only-upgrade -y cloud-init

Debian bookworm

Source: Debian Security Tracker

  • cloud-init→ fixed in19.4-2urgency: not yet assigned
    sudo apt-get install --only-upgrade -y cloud-init

Debian trixie

Source: Debian Security Tracker

  • cloud-init→ fixed in19.4-2urgency: not yet assigned
    sudo apt-get install --only-upgrade -y cloud-init
Are YOU affected by CVE-2020-8631?

5-second check on your actual server. Reads /etc/os-release, uname -r, and the distro's package manager; matches against this same cross-source index live.

curl https://mindsparkstack.com/scan.sh | bash
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