[Openstack-security] [Bug 1611171] Re: re-runs self via sudo
Author: Iswarya_Vakati <v.iswarya at nectechnologies.in>
Date: Sat Sep 17 18:28:28 2016 +0530
Don't attempt to escalate ec2-api-manage privileges
Remove code which allowed ec2-api-manage to attempt to escalate
privileges so that configuration files can be read by users who
normally wouldn't have access, but do have sudo access.
** Changed in: ec2-api
Status: In Progress => Fix Released
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re-runs self via sudo
Status in Cinder:
Status in Designate:
Status in ec2-api:
Status in gce-api:
Status in Manila:
Status in masakari:
Status in OpenStack Compute (nova):
Status in OpenStack Compute (nova) newton series:
Status in OpenStack Security Advisory:
Status in Rally:
Hello, I'm looking through Designate source code to determine if is
appropriate to include in Ubuntu Main. This isn't a full security
This looks like trouble:
cfgfile = CONF.config_file[-1] if CONF.config_file else None
if cfgfile and not os.access(cfgfile, os.R_OK):
st = os.stat(cfgfile)
print(_("Could not read %s. Re-running with sudo") % cfgfile)
os.execvp('sudo', ['sudo', '-u', '#%s' % st.st_uid] + sys.argv)
print(_('sudo failed, continuing as if nothing happened'))
print(_('Please re-run designate-manage as root.'))
This is an interesting decision -- if the configuration file is _not_ readable by the user in question, give the executing user complete privileges of the user that owns the unreadable file.
I'm not a fan of hiding privilege escalation / modifications in
programs -- if a user had recently used sudo and thus had the
authentication token already stored for their terminal, this 'hidden'
use of sudo may be unexpected and unwelcome, especially since it
appears that argv from the first call leaks through to the sudo call.
Is this intentional OpenStack style? Or unexpected for you guys too?
(Feel free to make this public at your convenience.)
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