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V-257827

CAT II (Medium)

RHEL 9 must not have the sendmail package installed.

Rule ID

SV-257827r1044892_rule

STIG

Red Hat Enterprise Linux 9 Security Technical Implementation Guide

Version

V2R8

CCIs

CCI-000381

Discussion

The sendmail software was not developed with security in mind, and its design prevents it from being effectively contained by SELinux. Postfix must be used instead. Satisfies: SRG-OS-000480-GPOS-00227, SRG-OS-000095-GPOS-00049

Check Content

Verify that the sendmail package is not installed with the following command:

$ dnf list --installed sendmail

Error: No matching Packages to list

If the "sendmail" package is installed, this is a finding.

Fix Text

Remove the sendmail package with the following command:

$ sudo dnf remove sendmail