CVE-2021-43809 · cross-distro fix matrix

CVE-2021-43809: `Bundler` is a package for managing application dependencies in Ruby. In `bundler` versions before 2.2.33, when working with untrusted and apparently harmless `Gemfile`'s, it is not expected that they lead to execution of external code, unless that's explicit in the ruby code inside the `Gemfile` it

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

Fix per ecosystem

Each block below is a distro release where CVE-2021-43809 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

rubygems→ fixed in3.2.5-2+deb11u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y rubygems
```

Debian bookworm

Source: Debian Security Tracker

rubygems→ fixed in3.3.5-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y rubygems
```

Debian trixie

Source: Debian Security Tracker

rubygems→ fixed in3.3.5-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y rubygems
```

Are YOU affected by CVE-2021-43809?

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

Form-based quickscan View on NVD

Continuous monitoring beats manual checking

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