CVE-2005-0337 · cross-distro fix matrix

CVE-2005-0337: Postfix 2.1.3, when /proc/net/if_inet6 is not available and permit_mx_backup is enabled in smtpd_recipient_restrictions, allows remote attackers to bypass e-mail restrictions and perform mail relaying by sending mail to an IPv6 hostname.

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

Fix per ecosystem

Each block below is a distro release where CVE-2005-0337 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

postfix→ fixed in2.1.4-5urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y postfix
```

Debian bookworm

Source: Debian Security Tracker

postfix→ fixed in2.1.4-5urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y postfix
```

Debian trixie

Source: Debian Security Tracker

postfix→ fixed in2.1.4-5urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y postfix
```

Are YOU affected by CVE-2005-0337?

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

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