original ) (raw )Created on 2010-07-05 16:20 by alfmel , last changed 2022-04-11 14:57 by admin . This issue is now closed .
Messages (6)
msg109336 - (view) Author: Alberto Trevino (alfmel)
Date: 2010-07-05 16:20
The SMTP proxy server in Python (smtpd.py) allows you to shed privileges and run as user nobody. However, if you are trying to use port 25, the server will shed privileges before binding the port, causing a bind failure. By moving the setuid code between the creation of the proxy server and the aysncore loop, we can bind a port below 1024 and run as nobody.
msg113940 - (view) Author: Alberto Trevino (alfmel)
Date: 2010-08-15 04:10
I haven't heard anything on this problem or my patch. What's the status?
msg146012 - (view) Author: Petri Lehtinen (petri.lehtinen) *
Date: 2011-10-20 08:59
The patch looks good to me and fixes the problem. To reproduce, try this: sudo python -m smtpd 127.0.0.1:25 It raises a "socket.error: [Errno 13] Permission denied" when trying to bind to the privileged port. Attached a refreshed the patch that applies cleanly on top of current 2.7 branch.
msg146052 - (view) Author: Roundup Robot (python-dev)
Date: 2011-10-20 21:15
New changeset 7d92b94b0eec by Florent Xicluna in branch '3.2': Issue #9168 : now smtpd is able to bind privileged port. http://hg.python.org/cpython/rev/7d92b94b0eec New changeset bbd92b42508e by Florent Xicluna in branch 'default': Issue #9168 : now smtpd is able to bind privileged port. http://hg.python.org/cpython/rev/bbd92b42508e
msg146053 - (view) Author: Roundup Robot (python-dev)
Date: 2011-10-20 21:22
New changeset d2f303861c98 by Florent Xicluna in branch '2.7': Issue #9168 : now smtpd is able to bind privileged port. http://hg.python.org/cpython/rev/d2f303861c98
msg146054 - (view) Author: Florent Xicluna (flox) *
Date: 2011-10-20 21:30
Fixed. Thank you for the patch.
History
Date
User
Action
Args
2022-04-11 14:57:03
admin
set
github: 53414
2011-10-20 21:30:32
flox
set
status: open -> closednosy: + flox messages: + resolution: fixedstage: patch review -> resolved
2011-10-20 21:22:25
python-dev
set
messages: +
2011-10-20 21:15:43
python-dev
set
nosy: + python-dev messages: +
2011-10-20 08:59:55
petri.lehtinen
set
files: + smtpd.py-0.2-setuid-fix_v2.diff versions: - Python 3.1nosy: + petri.lehtinen messages: +
2011-02-04 01:21:19
eric.araujo
set
keywords: + needs review nosy:barry , giampaolo.rodola , alfmel versions: + Python 2.7, Python 3.2, Python 3.3type: crash -> behaviorstage: patch review
2010-08-15 04:10:33
alfmel
set
messages: +
2010-08-06 00:26:36
alfmel
set
type: crashversions: + Python 3.1, - Python 3.2
2010-07-05 17:27:32
giampaolo.rodola
set
nosy: + giampaolo.rodola
2010-07-05 16:20:39
alfmel
create
