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Set the type on /etc/machine-info to net_conf_t so hostnamectl can manipulate it (CRUD) 

When attempting to set the PRETTY_HOSTNAME (e.g. hostnamectl --pretty hostname "My Pretty Host") you will receive these denials in the audit log:
`node=localhost type=AVC msg=audit(1713748477.775:17769): avc: denied { create } for pid=3012 comm="systemd-hostnam" name=".#machine-infocuJGLW" scontext=system_u:system_r:systemd_hostnamed_t:s0 tcontext=system_u:object_r:etc_t:s0 tclass=file permissive=1

node=localhost type=AVC msg=audit(1713748477.775:17769): avc: denied { write } for pid=3012 comm="systemd-hostnam" path="/etc/.#machine-infocuJGLW" dev="dm-1" ino=1180584 scontext=system_u:system_r:systemd_hostnamed_t:s0 tcontext=system_u:object_r:etc_t:s0 tclass=file permissive=1

node=localhost type=PATH msg=audit(1713748477.775:17769): item=1 name="/etc/.#machine-infocuJGLW" inode=1180584 dev=fd:01 mode=0100600 ouid=0 ogid=0 rdev=00:00 obj=system_u:object_r:etc_t:s0 nametype=CREATE cap_fp=0 cap_fi=0 cap_fe=0 cap_fver=0 cap_frootid=0OUID="root" OGID="root"

node=localhost type=AVC msg=audit(1713748477.775:17770): avc: denied { setattr } for pid=3012 comm="systemd-hostnam" name=".#machine-infocuJGLW" dev="dm-1" ino=1180584 scontext=system_u:system_r:systemd_hostnamed_t:s0 tcontext=system_u:object_r:etc_t:s0 tclass=file permissive=1

node=localhost type=AVC msg=audit(1713748477.776:17771): avc: denied { rename } for pid=3012 comm="systemd-hostnam" name=".#machine-infocuJGLW" dev="dm-1" ino=1180584 scontext=system_u:system_r:systemd_hostnamed_t:s0 tcontext=system_u:object_r:etc_t:s0 tclass=file permissive=1

node=localhost type=PATH msg=audit(1713748477.776:17771): item=2 name="/etc/.#machine-infocuJGLW" inode=1180584 dev=fd:01 mode=0100644 ouid=0 ogid=0 rdev=00:00 obj=system_u:object_r:etc_t:s0 nametype=DELETE cap_fp=0 cap_fi=0 cap_fe=0 cap_fver=0 cap_frootid=0OUID="root" OGID="root"

node=localhost type=PATH msg=audit(1713748477.776:17771): item=3 name="/etc/machine-info" inode=1180584 dev=fd:01 mode=0100644 ouid=0 ogid=0 rdev=00:00 obj=system_u:object_r:etc_t:s0 nametype=CREATE cap_fp=0 cap_fi=0 cap_fe=0 cap_fver=0 cap_frootid=0OUID="root" OGID="root"

node=localhost type=PATH msg=audit(1713748497.093:17897): item=0 name="/etc/machine-info" inode=1180584 dev=fd:01 mode=0100644 ouid=0 ogid=0 rdev=00:00 obj=system_u:object_r:etc_t:s0 nametype=NORMAL cap_fp=0 cap_fi=0 cap_fe=0 cap_fver=0 cap_frootid=0OUID="root" OGID="root`

This is on a Rocky 9 system where the default type is etc_t. Setting the type to net_conf_t allows the command to succeed without error.

Signed-off-by: Rick Alther <alther@acm.org>
This commit is contained in:
Rick Alther 2024-04-22 01:36:57 -04:00
parent 6507eebc23
commit 511223e2d1
1 changed files with 1 additions and 0 deletions
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policy/modules/system/sysnetwork.fc
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@ -20,6 +20,7 @@ ifdef(`distro_debian',`
/etc/hosts\.deny.* -- gen_context(system_u:object_r:net_conf_t,s0)
/etc/hostname -- gen_context(system_u:object_r:net_conf_t,s0)
/etc/denyhosts.* -- gen_context(system_u:object_r:net_conf_t,s0)
/etc/machine-info -- gen_context(system_u:object_r:net_conf_t,s0)
/etc/resolv\.conf.* -- gen_context(system_u:object_r:net_conf_t,s0)
/etc/yp\.conf.* -- gen_context(system_u:object_r:net_conf_t,s0)