On Fri, 21 Aug 2015 13:04:47 -0500, Mark Zelden wrote: >> >>(And long ago, MVS-OE mentioned "charcase lower" as a preventive.) >> I believe this was not in the original design, but provided at a later release in order to forestall the DoS exposure.
>>Suppose you have "/u/mzelden". While it's unmounted I do "cd /u/MZelden". >>Automount issues (something like) an ENQ EXC on MZELDEN.TPLEX.ZFS. >>While that's in effect you can't mount "/u/mzelden". Not a DoS of your >>entire system, just of your HOME. (At least this applied to HFS; zFS >>might be different.) > >So, OMVS / ZFS address spaces have the access and it gets mounted >in a microsecond on my very fast z13 with flash disk. :-) > Not for only a microsecond, but for at least as long as it takes to time out and dismount. And if I can "cd /u/MZelden", for as long as I tarry there. But that requires that I have at least search authority on the directory. >But seriously, where's the exposure? > I believe IBM covered it because they perceived it. Can you try "cd /u/MZelden" and observe the result? -- gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
