Re: [Drbd-dev] [oss-security] CVE request: kernel: connector security bypass

Re: [Drbd-dev] [oss-security] CVE request: kernel: connector security bypass

[dann frazier]

On Mon, Nov 02, 2009 at 11:37:21AM +0000, Mark J Cox wrote:
> On Mon, 2 Nov 2009, Eugene Teo wrote:
> 
> >1/ uvesafb/connector: Disallow unprivileged users to send netlink packets
> >upstream commit: cc44578b5a508889beb8ae3ccd4d2bbdf17bc86c
> >introduced in v2.6.24-rc1; fixed in v2.6.32-rc3
> >
> >2/ pohmelfs/connector: Disallow unprivileged users to configure pohmelfs
> >upstream commit: 98a5783af02f4c9b87b676d7bbda6258045cfc76
> >(staging/experimental)
> >
> >3/ dst/connector: Disallow unprivileged users to configure dst
> >upstream commit: 5788c56891cfb310e419c4f9ae20427851797431
> >(staging/experimental)
> >
> >4/ dm/connector: Only process connector packages from privileged processes
> >upstream commit: 24836479a126e02be691e073c2b6cad7e7ab836a
> >introduced in v2.6.31-rc1; fixed in v2.6.32-rc3
> 
> >References:
> >http://secunia.com/advisories/37113/
> >http://xorl.wordpress.com/2009/10/31/linux-kernel-multiple-capabilities-missing-checks/

Debian provides an out-of-tree drbd module (drbd8), and it appears to
be affected by this issue as well. I assume we need to allocate an
additional CVE ID for it?

Here's a link to the upstream fix:
http://git.drbd.org/?p=drbd-8.3.git;a=commitdiff;h=71915b0d267392c77fe0ae2309535333026cef66

The in-tree version that got merged for 2.6.33 looks fine.

-- 
dann frazier

Re: [Drbd-dev] [oss-security] CVE request: kernel: connector security bypass

[Lars Ellenberg]

On Thu, Mar 11, 2010 at 03:18:08PM -0700, dann frazier wrote:
> On Mon, Nov 02, 2009 at 11:37:21AM +0000, Mark J Cox wrote:
> > On Mon, 2 Nov 2009, Eugene Teo wrote:
> > 
> > >1/ uvesafb/connector: Disallow unprivileged users to send netlink packets
> > >upstream commit: cc44578b5a508889beb8ae3ccd4d2bbdf17bc86c
> > >introduced in v2.6.24-rc1; fixed in v2.6.32-rc3
> > >
> > >2/ pohmelfs/connector: Disallow unprivileged users to configure pohmelfs
> > >upstream commit: 98a5783af02f4c9b87b676d7bbda6258045cfc76
> > >(staging/experimental)
> > >
> > >3/ dst/connector: Disallow unprivileged users to configure dst
> > >upstream commit: 5788c56891cfb310e419c4f9ae20427851797431
> > >(staging/experimental)
> > >
> > >4/ dm/connector: Only process connector packages from privileged processes
> > >upstream commit: 24836479a126e02be691e073c2b6cad7e7ab836a
> > >introduced in v2.6.31-rc1; fixed in v2.6.32-rc3
> > 
> > >References:
> > >http://secunia.com/advisories/37113/
> > >http://xorl.wordpress.com/2009/10/31/linux-kernel-multiple-capabilities-missing-checks/
> 
> Debian provides an out-of-tree drbd module (drbd8), and it appears to
> be affected by this issue as well. I assume we need to allocate an
> additional CVE ID for it?

Maybe just go to current upstream drbd 8.3.7?

> Here's a link to the upstream fix:
> http://git.drbd.org/?p=drbd-8.3.git;a=commitdiff;h=71915b0d267392c77fe0ae2309535333026cef66
> 
> The in-tree version that got merged for 2.6.33 looks fine.

-- 
: Lars Ellenberg
: LINBIT | Your Way to High Availability
: DRBD/HA support and consulting http://www.linbit.com

DRBD® and LINBIT® are registered trademarks of LINBIT, Austria.

Re: [Drbd-dev] [oss-security] CVE request: kernel: connector security bypass

[dann frazier]

On Fri, Mar 12, 2010 at 10:34:52AM +0100, Lars Ellenberg wrote:
> On Thu, Mar 11, 2010 at 03:18:08PM -0700, dann frazier wrote:
> > On Mon, Nov 02, 2009 at 11:37:21AM +0000, Mark J Cox wrote:
> > > On Mon, 2 Nov 2009, Eugene Teo wrote:
> > > 
> > > >1/ uvesafb/connector: Disallow unprivileged users to send netlink packets
> > > >upstream commit: cc44578b5a508889beb8ae3ccd4d2bbdf17bc86c
> > > >introduced in v2.6.24-rc1; fixed in v2.6.32-rc3
> > > >
> > > >2/ pohmelfs/connector: Disallow unprivileged users to configure pohmelfs
> > > >upstream commit: 98a5783af02f4c9b87b676d7bbda6258045cfc76
> > > >(staging/experimental)
> > > >
> > > >3/ dst/connector: Disallow unprivileged users to configure dst
> > > >upstream commit: 5788c56891cfb310e419c4f9ae20427851797431
> > > >(staging/experimental)
> > > >
> > > >4/ dm/connector: Only process connector packages from privileged processes
> > > >upstream commit: 24836479a126e02be691e073c2b6cad7e7ab836a
> > > >introduced in v2.6.31-rc1; fixed in v2.6.32-rc3
> > > 
> > > >References:
> > > >http://secunia.com/advisories/37113/
> > > >http://xorl.wordpress.com/2009/10/31/linux-kernel-multiple-capabilities-missing-checks/
> > 
> > Debian provides an out-of-tree drbd module (drbd8), and it appears to
> > be affected by this issue as well. I assume we need to allocate an
> > additional CVE ID for it?
> 
> Maybe just go to current upstream drbd 8.3.7?

Lars,
 Thanks for the suggestion. That is a possible solution for our next
release of Debian (as is moving to the in-tree version), but for our
current stable release we have backported "just-the-fix" as required
by our security update policy.

-- 
dann frazier