[Python-Dev] Python FTP Injections Allow for Firewall Bypass (oss-security advisory)

2017-02-20 Thread nospam
Hello,

I have just noticed that an FTP injection advisory has been made public
on the oss-security list.

The author says that he an exploit exists but it won't be published
until the code is patched

You may be already aware, but it would be good to understand what is the
position of the core developers about this.

The advisory is linked below (with some excerpts in this message):

http://blog.blindspotsecurity.com/2017/02/advisory-javapython-ftp-injections.html

   Protocol injection flaws like this have  been an area of research of  mine
   for the past few couple  of years and as it  turns out, this FTP  protocol
   injection allows  one  to  fool  a victim's  firewall  into  allowing  TCP
   connections from  the Internet  to  the vulnerable  host's system  on  any
   "high" port  (1024-65535).  A  nearly identical  vulnerability  exists  in
   Python's urllib2 and urllib  libraries. In the case  of Java, this  attack
   can be carried out  against desktop users even  if those desktop users  do
   not have the Java browser plugin enabled.
   As of 2017-02-20, the vulnerabilities discussed here have not been patched
   by the associated vendors,  despite advance warning and  ample time to  do
   so.
   [...]
   Python's built-in URL fetching library (urllib2 in Python 2 and urllib  in
   Python 3) is vulnerable to  a nearly identical protocol stream  injection,
   but this injection appears  to be limited to  attacks via directory  names
   specified in the URL.
   [...]
   The Python  security  team  was  notified  in  January  2016.  Information
   provided included an outline of  the possibility of FTP/firewall  attacks.
   Despite repeated follow-ups, there  has been no  apparent action on  their
   part.

Best regards,

-- Stefano

P.S.
I am posting from gmane, I hope that this is OK.

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[Python-Dev] 3.3 release plans

2012-06-23 Thread g . brandl-nospam
Hi all,

now that the final PEP scheduled for 3.3 is final, we're entering
the next round of the 3.3 cycle.

I've decided to make Tuesday 26th the big release day. That means:

- Saturday: last feature-level changes that should be done before beta,
  e.g. removal of packaging
- Sunday: final feature freeze, bug fixing
- Monday: focus on stability of the buildbots, even unstable ones
- Tuesday: forking of the 3.3.0b1 release clone, tagging, start
  of binary building

cheers,
Georg
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[Python-Dev] 3.3 release plans

2012-06-23 Thread g . brandl-nospam
Hi all,

I've checked in the (hopefully final) update of PEP 398: all PEP
scale changes are now final or deferred to 3.4.

I also adjusted the release day to be the 26th of June, which leaves
us with the following rough plan:

- Saturday: last large changes, such as removal of packaging
- Sunday: final feature freeze for 3.3; resolve last blockers
  from bugs.python.org
- Monday: ensure build stability for stable buildbots, and as
  many unstable buildbots as possible
- Tuesday: release clone forked off the main repo; tagging
  and start of binary building

cheers,
Georg
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Re: [Python-Dev] 3.3 release plans

2012-06-23 Thread g . brandl-nospam

 Original-Nachricht 
> Datum: Sat, 23 Jun 2012 21:55:55 +0200
> Von: Christian Heimes 
> An: python-dev@python.org
> Betreff: Re: [Python-Dev] 3.3 release plans

> Am 23.06.2012 12:54, schrieb g.brandl-nos...@gmx.net:
> > Hi all,
> > 
> > now that the final PEP scheduled for 3.3 is final, we're entering
> > the next round of the 3.3 cycle.
> > 
> > I've decided to make Tuesday 26th the big release day. That means:
> > 
> > - Saturday: last feature-level changes that should be done before beta,
> >   e.g. removal of packaging
> > - Sunday: final feature freeze, bug fixing
> > - Monday: focus on stability of the buildbots, even unstable ones
> > - Tuesday: forking of the 3.3.0b1 release clone, tagging, start
> >   of binary building
> 
> I'd like to get the C implementation of the timing safe compare_digest
> into 3.3. http://bugs.python.org/issue15061
> 
> The patch went to several incarnations and I implemented input from
> Antoine, Serhiy and others. The function finally ended up as private
> function in the operator module because the _hashlib module isn't
> available without openssl and a new module for a single function is
> kinda overkill.

Fine with me.  You have time until tomorrow to push it.

Georg
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[Python-Dev] 3.3 feature freeze

2012-06-24 Thread g . brandl-nospam
Hi all,

please consider the default branch frozen for new features as of now.
As you know, this also includes changes like large cleanups that cannot
be considered bug fixes.  Contact me directly (IRC or mail) with urgent
questions regarding the release.

I hope that we will see the branch (and the buildbots) calm down and
stabilize a bit tomorrow, so that everything is ready for Tuesday. 

cheers,
Georg
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