CVE-2021-23351 · cross-distro fix matrix

CVE-2021-23351: The package github.com/pires/go-proxyproto before 0.5.0 are vulnerable to Denial of Service (DoS) via the parseVersion1() function. The reader in this package is a default bufio.Reader wrapping a net.Conn. It will read from the connection until it finds a newline. Since no limits are implemented in

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

Fix per ecosystem

Each block below is a distro release where CVE-2021-23351 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

golang-github-pires-go-proxyproto→ fixed in0.4.2-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y golang-github-pires-go-proxyproto
```

Debian bookworm

Source: Debian Security Tracker

golang-github-pires-go-proxyproto→ fixed in0.4.2-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y golang-github-pires-go-proxyproto
```

Debian trixie

Source: Debian Security Tracker

golang-github-pires-go-proxyproto→ fixed in0.4.2-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y golang-github-pires-go-proxyproto
```

Are YOU affected by CVE-2021-23351?

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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