CVE-2021-20199 · cross-distro fix matrix

CVE-2021-20199: Rootless containers run with Podman, receive all traffic with a source IP address of 127.0.0.1 (including from remote hosts). This impacts containerized applications that trust localhost (127.0.01) connections by default and do not require authentication. This issue affects Podman 1.8.0 onwards.

Affects 8 Linux releases across 10 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2021-20199 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

libpod→ fixed in3.0.0~rc2+dfsg1-2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libpod
```
rootlesskit→ fixed in0.12.0-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y rootlesskit
```

Debian bookworm

Source: Debian Security Tracker

libpod→ fixed in3.0.0~rc2+dfsg1-2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libpod
```
rootlesskit→ fixed in0.12.0-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y rootlesskit
```

Debian trixie

Source: Debian Security Tracker

rootlesskit→ fixed in0.12.0-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y rootlesskit
```

Alpine v3.20

Source: Alpine secdb

podman→ fixed in3.0.0-r0
```
apk update && apk add --upgrade podman
```

Alpine v3.21

Source: Alpine secdb

podman→ fixed in3.0.0-r0
```
apk update && apk add --upgrade podman
```

Alpine edge

Source: Alpine secdb

podman→ fixed in3.0.0-r0
```
apk update && apk add --upgrade podman
```

Alpine v3.18

Source: Alpine secdb

podman→ fixed in3.0.0-r0
```
apk update && apk add --upgrade podman
```

Alpine v3.19

Source: Alpine secdb

podman→ fixed in3.0.0-r0
```
apk update && apk add --upgrade podman
```

Are YOU affected by CVE-2021-20199?

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

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