Bug 526826

Summary: setroubleshoot: SELinux is preventing /usr/lib64/chromium-browser/chromium-browser "execmem" access on <Unknown>.
Product: [Fedora] Fedora Reporter: ericm24x7
Component: selinux-policyAssignee: Daniel Walsh <dwalsh>
Status: CLOSED RAWHIDE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: low    
Version: rawhideCC: dwalsh, mgrepl
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard: setroubleshoot_trace_hash:fa93d0e9fbdddd9d9d74e0a69cc1a1fe1f9e388daa9681c0d28136bc72c335f8
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2009-10-02 15:23:57 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:

Description ericm24x7 2009-10-01 21:36:38 UTC
The following was filed automatically by setroubleshoot:


SELinux is preventing /usr/lib64/chromium-browser/chromium-browser "execmem"
access on <Unknown>.

Detailed Description:

[SELinux is in permissive mode. This access was not denied.]

SELinux denied access requested by chromium-browse. The current boolean settings
do not allow this access. If you have not setup chromium-browse to require this
access this may signal an intrusion attempt. If you do intend this access you
need to change the booleans on this system to allow the access.

Allowing Access:

One of the following booleans is set incorrectly: allow_execstack, allow_execmem

Fix Command:

Choose one of the following to allow access:
Allow unconfined executables to make their stack executable. This should never,
ever be necessary. Probably indicates a badly coded executable, but could
indicate an attack. This executable should be reported in bugzilla")
# setsebool -P allow_execstack 1
Allow unconfined executables to map a memory region as both executable and
writable, this is dangerous and the executable should be reported in bugzilla")
# setsebool -P allow_execmem 1

Additional Information:

Source Context                unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1
Target Context                unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1
Target Objects                None [ process ]
Source                        chromium-browse
Source Path                   /usr/lib64/chromium-browser/chromium-browser
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           chromium-
Target RPM Packages           
Policy RPM                    selinux-policy-3.6.32-12.fc12
Selinux Enabled               True
Policy Type                   targeted
MLS Enabled                   True
Enforcing Mode                Permissive
Plugin Name                   catchall_boolean
Host Name                     (removed)
Platform                      Linux (removed) #1 SMP
                              Tue Sep 29 16:16:22 EDT 2009 x86_64 x86_64
Alert Count                   21
First Seen                    Wed 30 Sep 2009 08:08:47 PM EDT
Last Seen                     Thu 01 Oct 2009 05:25:54 PM EDT
Local ID                      aebee153-ed0a-4507-9f9c-05039e81de63
Line Numbers                  

Raw Audit Messages            

node=(removed) type=AVC msg=audit(1254432354.347:51): avc:  denied  { execmem } for  pid=3839 comm="chromium-browse" scontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tcontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tclass=process

node=(removed) type=SYSCALL msg=audit(1254432354.347:51): arch=c000003e syscall=9 success=yes exit=139679631908864 a0=0 a1=40000 a2=7 a3=22 items=0 ppid=1 pid=3839 auid=500 uid=500 gid=500 euid=500 suid=500 fsuid=500 egid=500 sgid=500 fsgid=500 tty=(none) ses=2 comm="chromium-browse" exe="/usr/lib64/chromium-browser/chromium-browser" subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 key=(null)

Hash String generated from  selinux-policy-3.6.32-12.fc12,catchall_boolean,chromium-browse,unconfined_t,unconfined_t,process,execmem
audit2allow suggests:

#============= unconfined_t ==============
allow unconfined_t self:process execmem;

Comment 1 Daniel Walsh 2009-10-02 15:23:57 UTC
Fixed in selinux-policy-3.6.32-20.fc12.noarch