CVE-2017-18190 · cross-distro fix matrix

CVE-2017-18190: A localhost.localdomain whitelist entry in valid_host() in scheduler/client.c in CUPS before 2.2.2 allows remote attackers to execute arbitrary IPP commands by sending POST requests to the CUPS daemon in conjunction with DNS rebinding. The localhost.localdomain name is often resolved via a DNS serve

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

Fix per ecosystem

Each block below is a distro release where CVE-2017-18190 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

cups→ fixed in2.2.3-2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y cups
```

Debian bookworm

Source: Debian Security Tracker

cups→ fixed in2.2.3-2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y cups
```

Debian trixie

Source: Debian Security Tracker

cups→ fixed in2.2.3-2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y cups
```

Are YOU affected by CVE-2017-18190?

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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