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Date: Mon, 15 Nov 2010 15:21:25 -0500
From: Dan Rosenberg <dan.j.rosenberg@...il.com>
To: oss-security@...ts.openwall.com
Subject: Re: econet iovec

This makes sense to me.  Just so everyone's on the same page:

CVE-2010-3859 (kernel heap overflow in TIPC) and CVE-2010-4160 (kernel
panic and potentially heap corruption in L2TP) are both fixed by
improved sanity checking on iovec input and new limits on network I/O
size.

The above mentioned issue in Econet (kernel panic due to integer
overflow in sk_buff allocation size on native Econet hardware) is no
longer an issue due to the previously mentioned fixes.  This has not
received a CVE, nor do I necessarily think it needs one.

There are likely other protocols that had issues resolved by these
fixes.  I can dig some up if necessary, but I don't really see the
point.

-Dan

On Mon, Nov 15, 2010 at 3:02 PM, Steven M. Christey
<coley@...us.mitre.org> wrote:
>
> On Sun, 14 Nov 2010, Dan Rosenberg wrote:
>
>> This also raises a question of whether it's worth assigning CVEs to every
>> vulnerability that was fixed by a single change in the core code. I'm
>> leaning towards "no".
>
> This is a big can of worms CVE-wise, since there can be multiple ways to fix
> a single issue.  As a result, I've come to believe that you shouldn't try to
> define a vulnerability exclusively in terms of its fix.  In practice within
> CVE, if a single fix addresses an already-public CVE-xyz and a whole bunch
> of other things, then we (generally) keep the already-public CVE as is, and
> assign a new CVE(s) to the "bunch of other things" that are simultaneously
> addressed.
>
> For example - in package XYZ, you might have both XSS and SQL injection,
> where the XSS is fixed by input validation (say, by ensuring that a numeric
> input is actually converted to a number).  This fix will inadvertently
> address SQL injection, but a different XSS fix - say, proper encoding -
> would not.
>
> This is one of those areas where we can't be completely consistent in CVE,
> and the amount of available information directly affects how many CVEs get
> assigned.
>
> - Steve
>

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