Re: The Misfortune Cookie Vulnerability

[Shahar Tal <shahartal () checkpoint com>]

Hi Sandro,
As I commented before, we are bound by policy that is out of my personal reach at the moment.
I can tell you, however, that when any independent researcher looks into the HTTP cookie parsing function in the 
RomPager 4.07 binary, his bounds will not be checked.

Cheers,
Shahar

From: Sandro Gauci [mailto:sandro () enablesecurity com]
Sent: יום ו 19 דצמבר 2014 09:57
To: Michal Zalewski
Cc: Shahar Tal; fulldisclosure () seclists org
Subject: Re: [FD] The Misfortune Cookie Vulnerability

The most technical it seems to get is the following:

<quote>
The Misfortune Cookie vulnerability is exploitable due to an error within the HTTP cookie management mechanism present 
in the affected software, allowing an attacker to determine the ‘fortune’ of a request by manipulating cookies. 
Attackers can send specially crafted HTTP cookies that exploit the vulnerability to corrupt memory and alter the 
application state. This, in effect, can trick the attacked web server to treat the current session with administrative 
privileges.
</quote>

From http://mis.fortunecook.ie/misfortune-cookie-tr069-protection-whitepaper.pdf.

Would be very useful for the rest of us if this information were less of an advert and more technical.

Shahar, are there plans to release proper technical details?

Sandro Gauci
Penetration tester and security researcher
Email: sandro () enablesecurity com<mailto:sandro () enablesecurity com>
Web: http://enablesecurity.com/
PGP: 8028 D017 2207 1786 6403  CD45 2B02 CBFE 9549 3C0C

On Fri, Dec 19, 2014 at 6:56 AM, Michal Zalewski <lcamtuf () coredump cx<mailto:lcamtuf () coredump cx>> wrote:
> See http://mis.fortunecook.ie for the rest.

I think you might have accidentally pasted the wrong link. This one
doesn't seem to contain additional information.

Cheers,
/mz

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