oss-sec mailing list archives

Re: pinocchio tmp vuln


From: Mikko Korpela <mikko.korpela () gmail com>
Date: Tue, 9 Sep 2014 11:57:11 +0300

I would say that the major impact for test automation tool for using a
fixed location for some file is that there can't be more then one
instance of that tool running on the same machine. Which is an issue
when you try to scale your testing.

Test automation on the other hand IMHO requires that we are working in
a secure sand box. If there is a malicious user on the same machine
then I bet things have already gone very wrong somewhere else.

Ystävällisin terveisin ;) ,
Mikko

2014-09-09 11:34 GMT+03:00 Steve Kemp <steve () steve org uk>:
I have to say I don't understand at all why someone would be going
through random packages from PyPi (especially test automation related)
and searching for possible security issues.

  Because although the chances of them being exploited are low they
 are genuine issues which have security implications.

  There is copious documentation online about how file races are
 bad, including this quick reference:

    
https://www.securecoding.cert.org/confluence/display/seccode/FIO21-C.+Do+not+create+temporary+files+in+shared+directories

  PyPi?  've no idea why that was chosen, but I expect because it
 is a large mass of code that has had little similar attention paid
 to it in the past.  node.js will probably be next, I'm sure lots of
 modules exist created by inexperienced developers who haven't
 considered the implications of posting new code libraries.

  I did something similar looking for /tmp abuses in Debian
 packages, via a very very automated scan:

    http://blog.steve.org.uk/luonnos_viesti___31_hein_kuu_2014.html

  Finding these issues was distressingly easy, and although in the
 real world the chances of significant impact are minimal they were
 genuine issues that should be reported and fixed.

Steve
--



-- 
Mikko Korpela


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