[Full-disclosure] Python 2.5 (Modules/zlib) minigzip local buffer overflow vulnerability

[Alejandro Barrera]

> > Thus, replacing strcpy(3) calls with strncpy(3) can have definite
> > impacts on performance.
>
> But the question is how big impact? Its a security/speed trade-off.

That depends on your actual code. It's not a security/speed trade-off, it's a
_I_don't_fucking_care_about_anything_and_I_use_the_easiest_function/speed 
trade-off.

If you care about security AND speed then you use strcpy() correctly, if 
you're a lazy bastard and don't care about speed, then use strncpy().

Anyway, usually you should fill the whole buffer, so if you know how to code, 
it shouldn't have a big impact. *BUT* if you're one of those lazy guys that 
just allocate a 1024 char buffer to copy 32 char strings then you have worse 
problems than security.

>
> Regards.

-- 
Alejandro Barrera García-Orea
R&D Engineer
c/ Alcala 268 28027 Madrid
Office: +34 91 326 66 11
Fax: +34 91 326 66 11
e-mail: abarrera at iron-gate.net