Bug 1122414 - SELinux is preventing /usr/bin/gdb from 'create' accesses on the file weakref.pyc.
Summary: SELinux is preventing /usr/bin/gdb from 'create' accesses on the file weakref...
Alias: None
Product: Fedora
Classification: Fedora
Component: abrt
Version: 20
Hardware: x86_64
OS: Unspecified
Target Milestone: ---
Assignee: abrt
QA Contact: Fedora Extras Quality Assurance
Whiteboard: abrt_hash:bf0e0e1540641c15a07543545c0...
: 1122415 1122416 1122418 (view as bug list)
Depends On:
TreeView+ depends on / blocked
Reported: 2014-07-23 08:03 UTC by jaroslaw.herod
Modified: 2017-11-28 13:02 UTC (History)
19 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2015-06-29 21:42:40 UTC

Attachments (Terms of Use)

System ID Priority Status Summary Last Updated
Red Hat Bugzilla 1518224 None None None Never

Internal Links: 1518224

Description jaroslaw.herod 2014-07-23 08:03:59 UTC
Description of problem:
SELinux is preventing /usr/bin/gdb from 'create' accesses on the file weakref.pyc.

*****  Plugin catchall (100. confidence) suggests   **************************

If aby gdb powinno mieć domyślnie create dostęp do weakref.pyc file.
Then proszę to zgłosić jako błąd.
Można utworzyć lokalny moduł polityki, aby umożliwić ten dostęp.
można tymczasowo zezwolić na ten dostęp wykonując polecenia:
# grep gdb /var/log/audit/audit.log | audit2allow -M mojapolityka
# semodule -i mojapolityka.pp

Additional Information:
Source Context                system_u:system_r:abrt_t:s0-s0:c0.c1023
Target Context                system_u:object_r:lib_t:s0
Target Objects                weakref.pyc [ file ]
Source                        gdb
Source Path                   /usr/bin/gdb
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           gdb-
Target RPM Packages           
Policy RPM                    selinux-policy-3.12.1-122.fc20.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Permissive
Host Name                     (removed)
Platform                      Linux (removed) 3.13.3-201.fc20.x86_64 #1 SMP Fri
                              Feb 14 19:08:32 UTC 2014 x86_64 x86_64
Alert Count                   1
First Seen                    2014-02-24 21:22:17 CET
Last Seen                     2014-02-24 21:22:17 CET
Local ID                      fbd48e6f-035b-4866-9aa2-4cf1b2df004e

Raw Audit Messages
type=AVC msg=audit(1393273337.935:659): avc:  denied  { create } for  pid=13166 comm="gdb" name="weakref.pyc" scontext=system_u:system_r:abrt_t:s0-s0:c0.c1023 tcontext=system_u:object_r:lib_t:s0 tclass=file

type=AVC msg=audit(1393273337.935:659): avc:  denied  { write } for  pid=13166 comm="gdb" path="/usr/lib64/python2.7/weakref.pyc" dev="dm-1" ino=406124 scontext=system_u:system_r:abrt_t:s0-s0:c0.c1023 tcontext=system_u:object_r:lib_t:s0 tclass=file

type=SYSCALL msg=audit(1393273337.935:659): arch=x86_64 syscall=open success=yes exit=ENOTBLK a0=104a810 a1=2c1 a2=81a4 a3=7f660dc865d0 items=0 ppid=13165 pid=13166 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 ses=4294967295 tty=(none) comm=gdb exe=/usr/bin/gdb subj=system_u:system_r:abrt_t:s0-s0:c0.c1023 key=(null)

Hash: gdb,abrt_t,lib_t,file,create

Additional info:
reporter:       libreport-2.2.3
hashmarkername: setroubleshoot
kernel:         3.15.6-200.fc20.x86_64
type:           libreport

Comment 1 Miroslav Grepl 2014-07-23 09:46:57 UTC
*** Bug 1122415 has been marked as a duplicate of this bug. ***

Comment 2 Miroslav Grepl 2014-07-23 09:47:09 UTC
*** Bug 1122416 has been marked as a duplicate of this bug. ***

Comment 3 Miroslav Grepl 2014-07-23 09:47:13 UTC
*** Bug 1122418 has been marked as a duplicate of this bug. ***

Comment 4 Daniel Walsh 2014-08-06 22:49:37 UTC
THis is python trying to write a compiled object, any reason we are not shipping this file as compiled?

Comment 5 Jakub Filak 2014-08-07 08:07:36 UTC
If Python tried to write a compiled object for 
/usr/libexec/abrt-gdb-exploitable, then we are not shipping this file as compiled, because we though that GDB Python user commands are executable files and not Python modules.

ABRT uses that file in the following command:

gdb --batch \
    -ex 'python execfile("/usr/libexec/abrt-gdb-exploitable")' \
    -ex 'core-file ./coredump' \
    -ex 'abrt-exploitable 4 ./exploitable'

So, we should move it from /usr/libexec/ to /usr/share/abrt/gdb/, because the file should never be executed and also we should use ".py" suffix to tell rpm-build to compile it.

Jan, do you agree with me? Or are there any guidelines for shipping GDB Python commands?

Comment 6 Jan Kratochvil 2014-08-07 08:20:52 UTC
(In reply to Jakub Filak from comment #5)
> gdb --batch \
>     -ex 'python execfile("/usr/libexec/abrt-gdb-exploitable")' \
>     -ex 'core-file ./coredump' \
>     -ex 'abrt-exploitable 4 ./exploitable'
> So, we should move it from /usr/libexec/ to /usr/share/abrt/gdb/, because
> the file should never be executed and also we should use ".py" suffix to
> tell rpm-build to compile it.

I understand neither Python nor SELinux but from all the problems of this kind I have seen I believe you should really do what you describe above.

Comment 7 Fedora End Of Life 2015-05-29 12:26:50 UTC
This message is a reminder that Fedora 20 is nearing its end of life.
Approximately 4 (four) weeks from now Fedora will stop maintaining
and issuing updates for Fedora 20. It is Fedora's policy to close all
bug reports from releases that are no longer maintained. At that time
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Comment 8 Fedora End Of Life 2015-06-29 21:42:40 UTC
Fedora 20 changed to end-of-life (EOL) status on 2015-06-23. Fedora 20 is
no longer maintained, which means that it will not receive any further
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