CVE-2023-51765 · cross-distro fix matrix

CVE-2023-51765: sendmail through 8.17.2 allows SMTP smuggling in certain configurations. Remote attackers can use a published exploitation technique to inject e-mail messages with a spoofed MAIL FROM address, allowing bypass of an SPF protection mechanism. This occurs because sendmail supports <LF>.<CR><LF> but som

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

Fix per ecosystem

Each block below is a distro release where CVE-2023-51765 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

sendmail→ fixed in8.15.2-22+deb11u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y sendmail
```

Debian bookworm

Source: Debian Security Tracker

sendmail→ fixed in8.17.1.9-2+deb12u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y sendmail
```

Debian trixie

Source: Debian Security Tracker

sendmail→ fixed in8.18.1-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y sendmail
```

Are YOU affected by CVE-2023-51765?

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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