On 05/28/2009 09:03 PM, Brian Ginn wrote:
I have an app which runs from xinetd in the myapp_t domain:
system_u:system_r:myapp_t
I am attempting to get myapp to exec the chfn program
however it reports:
chfn: system_u:system_r:myapp_t:SystemLow-SystemHigh is not authorized to change the finger info of test5
This means the transition did not happen.
I have tried these macros from the reference policy:
usermanage_run_chfn(myapp_t,system_r,devpts_t )
type myapp_devpts_t;
type myapp_tty_device_t;
userdom_change_password_template(myapp)
usermanage_run_chfn(myapp_t,system_r,{ myapp_devpts_t myapp_tty_device_t })
but things still don't work.
SELinux is not reporting denials in audit.log, presumably because
chfn calls security_compute_av() and reports the "denial" itself.
Is there policy I can write that will allow myapp to exec chfn?
Thanks,
Brian
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If myapp_t needs to have the ability to change a passwd of another user.
allow myapp_t self:passwd chfn;
chfn and others should report this error as an AVC rater then just an
error message so the tools would be able to generate appropriate policy.
Report this as a bug and cc me on the bug report.
passwd, chfn, chsh are all accesses required for root programs to
change the passwd, finger info or shell of oher UIDS.
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