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Date: Mon, 31 Dec 2012 16:21:23 +0100
From: Emanuele <emanuele45@...il.com>
To: Moritz Naumann <oss-security@...itz-naumann.com>
CC: oss-security@...ts.openwall.com, henri@...v.fi,
security@...plemachines.org, irist.ir@...il.com
Subject: Re: Dispute CVE-2012-5903 SMF index.php scheduled-parameter
XSS
Hello,
my name is Emanuele, and I'm one of the current SMF developers.
Moritz Naumann wrote:
> On 31.12.2012 11:42 Henri Salo wrote:
> [..]
>
>> Until someone provides a working PoC I dispute this issue. SMF hasn't replied to my emails about this.
I'm sorry nobody answered.
>> Please note there is several comments[1][2] in forums about this too.
>>
>>
> [..]
>
>> It's not a security vulnerability if attacker already has administrator access to the application. Should we REJECT CVE-2012-5903?
>>
> Based on the authors' description it would seem more likely that the
> attack would use social engineering to trick the legitimate forum admin
> into accessing this URL with a payload in it, which would then trigger
> in his browser and disclose the admins' session cookie to an attacker by
> means of cross site scripting. Like you, I don't see how the value
> passed to the "scheduled" parameter would be echoed out, though.
>
As I wrote in my post the scheduled parameter doesn't output anything on
the screen. It is just used to decide what action should be taken.
Relevant code involved:
https://github.com/SimpleMachines/SMF2.1/blob/release-2.1/index.php#L81
https://github.com/SimpleMachines/SMF2.1/blob/release-2.1/Sources/ScheduledTasks.php#L27
https://github.com/SimpleMachines/SMF2.1/blob/release-2.1/Sources/ScheduledTasks.php#L132
These are the only instances of "scheduled" in the entire codebase (the
code is from the future SMF 2.1 version, but it didn't change from 2.0).
Kindred answer (comment [1]) is not relevant. He was probably referring
to another bug we fixed with the latest patch (2.0.3).
1:
http://www.simplemachines.org/community/index.php?topic=491516.msg3445272#msg344527
> While it doesn't directly impact treatment of this latest report, I'd
> like to point out that there has been a previous report by the same
> author on the same product back in october, which I was also unable to
> reproduce:
>
>
[...]
> http://packetstormsecurity.com/files/117618/SMF-2.0.2-Cross-Site-Scripting.html
>
And again the "view" is only used to decide the action, but it is not
used to produce any output.
Thank you for the email.
Best regards,
Emanuele
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