Bug 582836

Summary: SELinux is preventing /usr/bin/perl access to a leaked tcp_socket file descriptor.
Product: [Fedora] Fedora Reporter: Carl G. <carlg>
Component: selinux-policyAssignee: Miroslav Grepl <mgrepl>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: medium    
Version: 12CC: dwalsh, mgrepl
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard: setroubleshoot_trace_hash:80c6e57be4ca496a0c38f2aab291b609a029cd156b754907823d9336c9aafd73
Fixed In Version: selinux-policy-3.6.32-113.fc12 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2010-05-03 16:09:53 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Carl G. 2010-04-15 21:46:00 UTC 
Résumé:

SELinux is preventing /usr/bin/perl access to a leaked tcp_socket file
descriptor.

Description détaillée:

[perl a un type permissif (staff_t). Cet accès n'a pas été refusé.]

SELinux denied access requested by the perl command. It looks like this is
either a leaked descriptor or perl output was redirected to a file it is not
allowed to access. Leaks usually can be ignored since SELinux is just closing
the leak and reporting the error. The application does not use the descriptor,
so it will run properly. If this is a redirection, you will not get output in
the tcp_socket. You should generate a bugzilla on selinux-policy, and it will
get routed to the appropriate package. You can safely ignore this avc.

Autoriser l'accès:

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

Informations complémentaires:

Contexte source               staff_u:staff_r:staff_t:s0-s0:c0.c1023
Contexte cible                staff_u:staff_r:staff_mono_t:s0-s0:c0.c1023
Objets du contexte            tcp_socket [ tcp_socket ]
source                        perl
Chemin de la source           /usr/bin/perl
Port                          <Inconnu>
Hôte                         (removed)
Paquetages RPM source         perl-5.10.0-87.fc12
Paquetages RPM cible          
Politique RPM                 selinux-policy-3.6.32-108.fc12
Selinux activé               True
Type de politique             targeted
Mode strict                   Enforcing
Nom du plugin                 leaks
Nom de l'hôte                (removed)
Plateforme                    Linux (removed)
                              2.6.32.11-99.fc12.x86_64 #1 SMP Mon Apr 5 19:59:38
                              UTC 2010 x86_64 x86_64
Compteur d'alertes            9
Première alerte              jeu 15 avr 2010 17:26:27 EDT
Dernière alerte              jeu 15 avr 2010 17:41:15 EDT
ID local                      047a8755-2bfd-4457-bf10-6d5f0c404337
Numéros des lignes           

Messages d'audit bruts        

node=(removed) type=AVC msg=audit(1271367675.621:77): avc:  denied  { read write } for  pid=3742 comm="perl" path="socket:[748367]" dev=sockfs ino=748367 scontext=staff_u:staff_r:staff_t:s0-s0:c0.c1023 tcontext=staff_u:staff_r:staff_mono_t:s0-s0:c0.c1023 tclass=tcp_socket

node=(removed) type=AVC msg=audit(1271367675.621:77): avc:  denied  { read write } for  pid=3742 comm="perl" path="socket:[750358]" dev=sockfs ino=750358 scontext=staff_u:staff_r:staff_t:s0-s0:c0.c1023 tcontext=staff_u:staff_r:staff_mono_t:s0-s0:c0.c1023 tclass=tcp_socket

node=(removed) type=AVC msg=audit(1271367675.621:77): avc:  denied  { read write } for  pid=3742 comm="perl" path="socket:[750675]" dev=sockfs ino=750675 scontext=staff_u:staff_r:staff_t:s0-s0:c0.c1023 tcontext=staff_u:staff_r:staff_mono_t:s0-s0:c0.c1023 tclass=tcp_socket

node=(removed) type=AVC msg=audit(1271367675.621:77): avc:  denied  { read write } for  pid=3742 comm="perl" path="socket:[750676]" dev=sockfs ino=750676 scontext=staff_u:staff_r:staff_t:s0-s0:c0.c1023 tcontext=staff_u:staff_r:staff_mono_t:s0-s0:c0.c1023 tclass=tcp_socket

node=(removed) type=AVC msg=audit(1271367675.621:77): avc:  denied  { read write } for  pid=3742 comm="perl" path="socket:[752207]" dev=sockfs ino=752207 scontext=staff_u:staff_r:staff_t:s0-s0:c0.c1023 tcontext=staff_u:staff_r:staff_mono_t:s0-s0:c0.c1023 tclass=tcp_socket

node=(removed) type=AVC msg=audit(1271367675.621:77): avc:  denied  { read write } for  pid=3742 comm="perl" path="socket:[752208]" dev=sockfs ino=752208 scontext=staff_u:staff_r:staff_t:s0-s0:c0.c1023 tcontext=staff_u:staff_r:staff_mono_t:s0-s0:c0.c1023 tclass=tcp_socket

node=(removed) type=AVC msg=audit(1271367675.621:77): avc:  denied  { read write } for  pid=3742 comm="perl" path="socket:[752209]" dev=sockfs ino=752209 scontext=staff_u:staff_r:staff_t:s0-s0:c0.c1023 tcontext=staff_u:staff_r:staff_mono_t:s0-s0:c0.c1023 tclass=tcp_socket

node=(removed) type=SYSCALL msg=audit(1271367675.621:77): arch=c000003e syscall=59 success=yes exit=0 a0=7f06f4001540 a1=7f06f4004020 a2=7f06f400b260 a3=7f07075f9d20 items=0 ppid=3725 pid=3742 auid=500 uid=500 gid=501 euid=500 suid=500 fsuid=500 egid=501 sgid=501 fsgid=501 tty=(none) ses=1 comm="perl" exe="/usr/bin/perl" subj=staff_u:staff_r:staff_t:s0-s0:c0.c1023 key=(null)



Hash String generated from  leaks,perl,staff_t,staff_mono_t,tcp_socket,read,write
audit2allow suggests:

#============= staff_t ==============
allow staff_t staff_mono_t:tcp_socket { read write };
Comment 1 Daniel Walsh 2010-04-16 18:27:23 UTC 
Is this from gnome_do?  If so it is a leaked file descriptor and should be reassigned there.
Comment 2 Carl G. 2010-04-16 18:40:37 UTC 
I honesty have no idea why mono_t want to access Perl. I did tried Komodo IDE w. Perl, changed the remote dbg settings, and that's about it.
Comment 3 Daniel Walsh 2010-04-20 13:55:38 UTC 
Miroslav, 

Add

ifdef(`hide_broken_symptoms', `
	dontaudit $1_t $1_mono_t $1:socket_class_set { read write };
')

to mono_role right after corecmd_bin_domtrans
Comment 4 Miroslav Grepl 2010-04-21 12:21:37 UTC 
Fixed in selinux-policy-3.6.32-113.fc12
Comment 5 Fedora Update System 2010-04-23 12:45:14 UTC 
selinux-policy-3.6.32-113.fc12 has been submitted as an update for Fedora 12.
http://admin.fedoraproject.org/updates/selinux-policy-3.6.32-113.fc12
Comment 6 Fedora Update System 2010-04-27 02:23:48 UTC 
selinux-policy-3.6.32-113.fc12 has been pushed to the Fedora 12 testing repository.  If problems still persist, please make note of it in this bug report.
 If you want to test the update, you can install it with 
 su -c 'yum --enablerepo=updates-testing update selinux-policy'.  You can provide feedback for this update here: http://admin.fedoraproject.org/updates/selinux-policy-3.6.32-113.fc12
Comment 7 Fedora Update System 2010-05-03 16:07:49 UTC 
selinux-policy-3.6.32-113.fc12 has been pushed to the Fedora 12 stable repository.  If problems still persist, please make note of it in this bug report.