[Python-Dev] XML DoS vulnerabilities and exploits in Python

Maciej Fijalkowski fijall at gmail.com
Thu Feb 21 17:00:02 CET 2013


On Thu, Feb 21, 2013 at 6:35 AM, Tres Seaver <tseaver at palladion.com> wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> On 02/20/2013 09:08 PM, Barry Warsaw wrote:
>> On Feb 21, 2013, at 10:38 AM, Nick Coghlan wrote:
>>
>>> - make it possible to enable safer behaviour globally in at least
>>> 2.7 and 3.3 (and perhaps in 2.6 and 3.2 security releases as well)
>>
>> I want to be fairly conservative with 2.6.9.
>
> I believe that the same rationale should apply as that for adding hash
> randomization in 2.6.8:  this is at least as bad a vulnerability, with
> many more vectors of attack.

FYI the hash randomization is broken (it only allows 256 really
different hashes)


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