Bug 614302 - SELinux is preventing /usr/sbin/lxdm-binary "write" access on root.
SELinux is preventing /usr/sbin/lxdm-binary "write" access on root.
Status: CLOSED INSUFFICIENT_DATA
Product: Fedora
Classification: Fedora
Component: selinux-policy (Show other bugs)
13
i386 Linux
low Severity medium
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Assigned To: Miroslav Grepl
Fedora Extras Quality Assurance
setroubleshoot_trace_hash:d2d193253a5...
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Depends On:
Blocks:
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Reported: 2010-07-14 00:20 EDT by Anas Tuffaha
Modified: 2010-11-03 11:55 EDT (History)
3 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Environment:
Last Closed: 2010-11-03 11:55:32 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Anas Tuffaha 2010-07-14 00:20:13 EDT
Summary:

SELinux is preventing /usr/sbin/lxdm-binary "write" access on root.

Detailed Description:

SELinux denied access requested by lxdm-binary. It is not expected that this
access is required by lxdm-binary and this access may signal an intrusion
attempt. It is also possible that the specific version or configuration of the
application is causing it to require additional access.

Allowing Access:

You can generate a local policy module to allow this access - see FAQ
(http://docs.fedoraproject.org/selinux-faq-fc5/#id2961385) Please file a bug
report.

Additional Information:

Source Context                system_u:system_r:xdm_t:s0-s0:c0.c1023
Target Context                system_u:object_r:admin_home_t:s0
Target Objects                root [ dir ]
Source                        lxdm-binary
Source Path                   /usr/sbin/lxdm-binary
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           lxdm-0.2.0-4.fc13
Target RPM Packages           filesystem-2.4.31-1.fc13
Policy RPM                    selinux-policy-3.7.19-10.fc13
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Plugin Name                   catchall
Host Name                     (removed)
Platform                      Linux (removed) 2.6.33.3-85.fc13.i686
                              #1 SMP Thu May 6 18:44:12 UTC 2010 i686 i686
Alert Count                   1
First Seen                    Wed 14 Jul 2010 07:14:20 AM EEST
Last Seen                     Wed 14 Jul 2010 07:14:20 AM EEST
Local ID                      0b98fe10-7f16-4b63-abcd-3d41025f7a8a
Line Numbers                  

Raw Audit Messages            

node=(removed) type=AVC msg=audit(1279080860.319:56): avc:  denied  { write } for  pid=5448 comm="lxdm-binary" name="root" dev=sda2 ino=2149 scontext=system_u:system_r:xdm_t:s0-s0:c0.c1023 tcontext=system_u:object_r:admin_home_t:s0 tclass=dir

node=(removed) type=SYSCALL msg=audit(1279080860.319:56): arch=40000003 syscall=5 success=no exit=-13 a0=804ee7a a1=241 a2=180 a3=8703e88 items=0 ppid=1489 pid=5448 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=3 comm="lxdm-binary" exe="/usr/sbin/lxdm-binary" subj=system_u:system_r:xdm_t:s0-s0:c0.c1023 key=(null)



Hash String generated from  catchall,lxdm-binary,xdm_t,admin_home_t,dir,write
audit2allow suggests:

#============= xdm_t ==============
#!!!! The source type 'xdm_t' can write to a 'dir' of the following types:
# pcscd_var_run_t, xdm_home_t, pam_var_console_t, xkb_var_lib_t, xdm_rw_etc_t, var_lock_t, root_t, tmp_t, var_t, user_fonts_t, user_tmpfs_t, user_home_dir_t, xdm_spool_t, fonts_cache_t, locale_t, var_auth_t, tmpfs_t, user_tmp_t, var_spool_t, auth_cache_t, xdm_tmpfs_t, var_lib_t, var_run_t, xdm_tmp_t, xserver_log_t, var_log_t, xdm_log_t, pam_var_run_t, xdm_var_lib_t, xdm_var_run_t

allow xdm_t admin_home_t:dir write;
Comment 1 Miroslav Grepl 2010-07-14 05:37:25 EDT
Are you trying to log in as a root user?

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