nanog mailing list archives

Re: Patching for Cisco vulnerability


From: Jared Mauch <jared () puck Nether net>
Date: Fri, 18 Jul 2003 15:31:25 -0400


On Fri, Jul 18, 2003 at 09:21:28PM +0200, Daniel Roesen wrote:

On Fri, Jul 18, 2003 at 03:04:45PM -0400, Jared Mauch wrote:
    most providers can easily go from (for example)
12.0(21)S3 to 12.0(21)S7 with less testing than from 12.0(21)S to 12.0(25)S

12.0(21)S* (at least S5 and above) have broken SNMP interface counters
and Cisco refuses to fix the bug in 12.0(21)S*, so people who don't

        Do you have a DDTS I can reference?

want to lose money (accounting) are forced to upgrade to 12.0(25)S*.
I guess they want to force all "conservative" ISPs to jump over
the 12.0(22)S "barrier".

        I agree that Cisco should actually take more serious ownership
of these issues within a customers network.  They're selling us
these software/hw and claiming that we can obtain a particular SLA
level.  Yet they can't seem to add in some code that says

        if  (ifc->in_bps > ifc->phy_speed || ifc->out_bps > ifc->phy_speed)
        {
                crash_router();
        }

        If they added this code, they'd find these bugs in their
labs instead of in our networks.

        - jared


-- 
Jared Mauch  | pgp key available via finger from jared () puck nether net
clue++;      | http://puck.nether.net/~jared/  My statements are only mine.


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