Bug 530712 - SELinux is preventing /usr/lib/cups/filter/hpcups "getattr" access on /var/lib/net-snmp.
Summary: SELinux is preventing /usr/lib/cups/filter/hpcups "getattr" access on /var/li...
Keywords:
Status: CLOSED RAWHIDE
Alias: None
Product: Fedora
Classification: Fedora
Component: selinux-policy
Version: rawhide
Hardware: x86_64
OS: Linux
low
medium
Target Milestone: ---
Assignee: Daniel Walsh
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: setroubleshoot_trace_hash:df2d6333669...
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2009-10-24 12:09 UTC by Scott Worley
Modified: 2009-10-27 02:02 UTC (History)
4 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2009-10-24 12:13:00 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)

Description Scott Worley 2009-10-24 12:09:07 UTC
Summary:

SELinux is preventing /usr/lib/cups/filter/hpcups "getattr" access on
/var/lib/net-snmp.

Detailed Description:

[hpcups has a permissive type (cupsd_t). This access was not denied.]

SELinux denied access requested by hpcups. It is not expected that this access
is required by hpcups 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://fedora.redhat.com/docs/selinux-faq-fc5/#id2961385) Please file a bug
report.

Additional Information:

Source Context                system_u:system_r:cupsd_t:s0-s0:c0.c1023
Target Context                system_u:object_r:snmpd_var_lib_t:s0
Target Objects                /var/lib/net-snmp [ dir ]
Source                        hpcups
Source Path                   /usr/lib/cups/filter/hpcups
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           hpijs-3.9.8-17.fc12
Target RPM Packages           net-snmp-5.4.2.1-18.fc12
Policy RPM                    selinux-policy-3.6.32-27.fc12
Selinux Enabled               True
Policy Type                   targeted
MLS Enabled                   True
Enforcing Mode                Enforcing
Plugin Name                   catchall
Host Name                     (removed)
Platform                      Linux (removed)
                              2.6.31.1-56.fc12.x86_64 #1 SMP Tue Sep 29 16:16:22
                              EDT 2009 x86_64 x86_64
Alert Count                   4
First Seen                    Fri 23 Oct 2009 07:43:21 PM EDT
Last Seen                     Fri 23 Oct 2009 07:43:21 PM EDT
Local ID                      57b46228-1047-46e2-859a-5836b5e7d8d4
Line Numbers                  

Raw Audit Messages            

node=(removed) type=AVC msg=audit(1256341401.101:25299): avc:  denied  { getattr } for  pid=2676 comm="hpcups" path="/var/lib/net-snmp" dev=dm-0 ino=311302 scontext=system_u:system_r:cupsd_t:s0-s0:c0.c1023 tcontext=system_u:object_r:snmpd_var_lib_t:s0 tclass=dir

node=(removed) type=SYSCALL msg=audit(1256341401.101:25299): arch=c000003e syscall=4 success=yes exit=0 a0=a7d080 a1=7fff48df19b0 a2=7fff48df19b0 a3=1 items=0 ppid=1221 pid=2676 auid=4294967295 uid=4 gid=7 euid=4 suid=4 fsuid=4 egid=7 sgid=7 fsgid=7 tty=(none) ses=4294967295 comm="hpcups" exe="/usr/lib/cups/filter/hpcups" subj=system_u:system_r:cupsd_t:s0-s0:c0.c1023 key=(null)



Hash String generated from  selinux-policy-3.6.32-27.fc12,catchall,hpcups,cupsd_t,snmpd_var_lib_t,dir,getattr
audit2allow suggests:

#============= cupsd_t ==============
allow cupsd_t snmpd_var_lib_t:dir getattr;

Comment 1 Daniel Walsh 2009-10-24 12:13:00 UTC
Tim, 

Do you have any idea what is going on here?  Is cups starting to interact with snmp?

Looks like this is 

Fixed in selinux-policy-3.6.32-33.fc12.noarch

Comment 2 Tim Waugh 2009-10-26 09:18:57 UTC
It's HPLIP, and yes, it uses libnetsnmp for status readback from network printers.

Thanks.


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