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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