CVE-2012-4436 · cross-distro fix matrix

CVE-2012-4436: Buffer overflow in the run_last_args function in client/fwknop.c in fwknop before 2.0.3, when processing --last, might allow local users to cause a denial of service (client crash) and possibly execute arbitrary code via many .fwknop.run arguments.

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

Fix per ecosystem

Each block below is a distro release where CVE-2012-4436 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

fwknop→ fixed in2.0.3-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y fwknop
```

Debian bookworm

Source: Debian Security Tracker

fwknop→ fixed in2.0.3-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y fwknop
```

Debian trixie

Source: Debian Security Tracker

fwknop→ fixed in2.0.3-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y fwknop
```

Are YOU affected by CVE-2012-4436?

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.

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