[Python-Dev] Python Remote Code Execution in socket.recvfrom_into()

Donald Stufft donald at stufft.io
Tue Feb 25 14:10:13 CET 2014


On Feb 25, 2014, at 8:07 AM, Maciej Fijalkowski <fijall at gmail.com> wrote:

> On Tue, Feb 25, 2014 at 3:06 PM, Chris Angelico <rosuav at gmail.com> wrote:
>> On Tue, Feb 25, 2014 at 11:59 PM, Maciej Fijalkowski <fijall at gmail.com> wrote:
>>>> Last issues:
>>>> - hash DoS
>>> 
>>> is this fixed?
>> 
>> Yes, hash randomization was added as an option in 2.7.3 or 2.7.4 or
>> thereabouts, and is on by default in 3.3+. You do have to set an
>> environment variable for 2.7 (and I think 2.6 got that too (??)), as
>> it can break code.
> 
> No, the hash randomization is broken, it does not provide enough
> randomness (without changing the hash function which only happened in
> 3.4+)
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More information available here: http://legacy.python.org/dev/peps/pep-0456/

-----------------
Donald Stufft
PGP: 0x6E3CBCE93372DCFA // 7C6B 7C5D 5E2B 6356 A926 F04F 6E3C BCE9 3372 DCFA

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