SELinux is preventing sh from getattr access on the file /usr/sbin/ldconfig.

[Suvayu Ali]

On Sun, Jun 28, 2015 at 06:04:38AM -0400, Daniel J Walsh wrote:
> 
> 
> On 06/27/2015 07:01 PM, Ed Greshko wrote:
> > On 06/27/15 21:15, Andras Simon wrote:
> >> 2015-06-27 15:11 GMT+02:00, Andras Simon <szajmi at gmail.com>:
> >>> Should I be worried about the $subject?
> >> And there's also a "SELinux is preventing sh from execute access on
> >> the file /usr/sbin/ldconfig" which I've only just noticed. It sounds
> >> even scarier.
> >>
> > Does your output match these?
> >
> > [egreshko at meimei ~]$ ls -Z /bin/bash
> > system_u:object_r:shell_exec_t:s0 /bin/bash
> >
> > [egreshko at meimei ~]$ ls -Z /usr/sbin/ldconfig
> > system_u:object_r:ldconfig_exec_t:s0 /usr/sbin/ldconfig
> >
> Do you have the avc's?
> 
> ausearch -m avc

I also saw these alerts during a package update.

time->Thu Jun 25 17:56:49 2015
type=PROCTITLE msg=audit(1435247809.870:4079): proctitle=7368002D63002F7362696E2F6C64636F6E666967202D7020323E2F6465762F6E756C6C
type=SYSCALL msg=audit(1435247809.870:4079): arch=c000003e syscall=59 success=no exit=-13 a0=7f955d728b00 a1=7f955d728c00 a2=7f955d727c40 a3=7fffc7dab900 items=0 ppid=30356 pid=30357 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="sh" exe="/usr/bin/bash" subj=system_u:system_r:firewalld_t:s0 key=(null)
type=AVC msg=audit(1435247809.870:4079): avc:  denied  { execute } for  pid=30357 comm="sh" name="ldconfig" dev="sdb1" ino=450673 scontext=system_u:system_r:firewalld_t:s0 tcontext=system_u:object_r:ldconfig_exec_t:s0 tclass=file permissive=0
----
time->Thu Jun 25 17:56:49 2015
type=PROCTITLE msg=audit(1435247809.870:4080): proctitle=7368002D63002F7362696E2F6C64636F6E666967202D7020323E2F6465762F6E756C6C
type=SYSCALL msg=audit(1435247809.870:4080): arch=c000003e syscall=4 success=no exit=-13 a0=7f955d728b00 a1=7fffc7dab9b0 a2=7fffc7dab9b0 a3=7fffc7dab900 items=0 ppid=30356 pid=30357 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="sh" exe="/usr/bin/bash" subj=system_u:system_r:firewalld_t:s0 key=(null)
type=AVC msg=audit(1435247809.870:4080): avc:  denied  { getattr } for  pid=30357 comm="sh" path="/usr/sbin/ldconfig" dev="sdb1" ino=450673 scontext=system_u:system_r:firewalld_t:s0 tcontext=system_u:object_r:ldconfig_exec_t:s0 tclass=file permissive=0
----
time->Thu Jun 25 17:56:49 2015
type=PROCTITLE msg=audit(1435247809.870:4081): proctitle=7368002D63002F7362696E2F6C64636F6E666967202D7020323E2F6465762F6E756C6C
type=SYSCALL msg=audit(1435247809.870:4081): arch=c000003e syscall=4 success=no exit=-13 a0=7f955d728b00 a1=7fffc7dab990 a2=7fffc7dab990 a3=7fffc7dab900 items=0 ppid=30356 pid=30357 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="sh" exe="/usr/bin/bash" subj=system_u:system_r:firewalld_t:s0 key=(null)
type=AVC msg=audit(1435247809.870:4081): avc:  denied  { getattr } for  pid=30357 comm="sh" path="/usr/sbin/ldconfig" dev="sdb1" ino=450673 scontext=system_u:system_r:firewalld_t:s0 tcontext=system_u:object_r:ldconfig_exec_t:s0 tclass=file permissive=0

-- 
Suvayu

Open source is the future. It sets us free.