Re: CVE request: Python HTTP header injection in urrlib2/urllib/httplib/http.client

[Cedric Buissart <cbuissar () redhat com>]

Hi Tim,

On Wed, Jun 15, 2016 at 6:54 PM, Tim <tim-security () sentinelchicken org>
wrote:

> Here are the additional details I promised:
>
> http://blog.blindspotsecurity.com/2016/06/advisory-http-header-injection-in.html
>
> The gist of it is that protocol injection can occur not only if an
> application sets a header based on user-supplied values, but also if
> the application ever tries to fetch a URL specified by an attacker
> (SSRF case) OR if the application ever accesses any malicious web
> server (redirection case).  URLs of the following form allow
> injection into the HTTP stream:
>
>   http://127.0.0.1%0d%0aX-injected:%20header%0d%0ax-leftover:%20:12345/foo
>   http://localhost%00%0d%0ax-bar:%20:12345/foo
>
> More details in the blog post, of course.

Thanks for details!
The glibc side of the issue has its own upstream bug entry:
https://sourceware.org/bugzilla/show_bug.cgi?id=20018

> Best regards,
> tim



-- 
Cedric Buissart,
Product Security

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