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Re: PATH records show fcaps



Quoting Eric Paris (eparis redhat com):
> On Mon, 2008-10-20 at 11:33 -0500, Serge E. Hallyn wrote:
> > Quoting Eric Paris (eparis redhat com):
> > > type=SYSCALL msg=audit(1224342849.465:43): arch=c000003e syscall=59 success=yes exit=0 a0=25b6a00 a1=2580410 a2=2580140 a3=8 items=2 ppid=2219 pid=2266 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=pts0 ses=1 comm="ping" exe="/bin/ping" subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 key=(null)
> > 
> > This part above is the credentials of the running task, right?  Will it
> > output your process inheritable set if nonempty?
> > 
> > (I would think you should be able to test this by doing
> > 
> > 	capsh --inh=cap_sys_admin /bin/sh
> > 	/bin/foo
> > 
> > and look for /bin/foo's record)
> > 
> > thanks,
> > -serge
> 
> For this (patch 2) I'm adding information so you can tell a process
> escalated it privs with fcaps.  This really means you have to audit
> EXECVE (since this is when fcaps are applied)
> 
> setcap "cap_net_admin+pei" /bin/bash
> setcap "cap_net_raw+pei" /bin/ping
> 
> auditctl -a exit,always -S execve -F path=/bin/ping
> 
> type=PATH msg=audit(10/20/2008 13:27:55.318:218) : item=1 name=(null) inode=507963 dev=fd:00 mode=file,755 ouid=root ogid=root rdev=00:00 obj=system_u:object_r:ld_so_t:s0 
> type=PATH msg=audit(10/20/2008 13:27:55.318:218) : item=0 name=/bin/ping inode=49227 dev=fd:00 mode=file,755 ouid=root ogid=root rdev=00:00 obj=system_u:object_r:ping_exec_t:s0 cap_fP=0000000000002000 cap_fE=1 cap_fVer=2
> type=CWD msg=audit(10/20/2008 13:27:55.318:218) :  cwd=/home/test 
> type=UNKNOWN[1321] msg=audit(10/20/2008 13:27:55.318:218) :  cap_fP=0000000000002000 cap_fI=0000000000000000 cap_fE=1 cap_pP=0000000000001000 cap_pI=0000000000000000 cap_pE=0000000000001000 cap_bprmE=0000000000002000 

This looks wrong - you say above that you set cap_net_raw in fI for
ping, but this shows fI as empty?

-serge


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