CVE-2016-4456 · cross-distro fix matrix

CVE-2016-4456: The "GNUTLS_KEYLOGFILE" environment variable in gnutls 3.4.12 allows remote attackers to overwrite and corrupt arbitrary files in the filesystem.

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

Fix per ecosystem

Each block below is a distro release where CVE-2016-4456 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

gnutls28→ fixed in3.4.13-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y gnutls28
```

Debian bookworm

Source: Debian Security Tracker

gnutls28→ fixed in3.4.13-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y gnutls28
```

Debian trixie

Source: Debian Security Tracker

gnutls28→ fixed in3.4.13-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y gnutls28
```

Are YOU affected by CVE-2016-4456?

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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