Comment 3 for bug 130205

Awesome...i didn't want to cry wolf but didn't have the chops to figure it out myself.

Thanks!

Bob

-----Original Message-----
From: <email address hidden> [mailto:<email address hidden>] On Behalf Of Kees Cook
Sent: Monday, August 06, 2007 5:13 PM
To: Robert Rich
Subject: [Bug 130205] Re: newgrp segfaults on exit when default group isn't in/etc/groups

Thanks for reporting this bug. This appears to be a NULL dereference,
and does not seem exploitable. I have unmarked it security/private.
Please feel free to report other bugs you may find.

$ ps auwwx | grep newgrp
root 23490 0.0 0.0 21900 1064 pts/13 S 14:09 0:00 newgrp testing
$ sudo gdb $(which newgrp) 23490
...
0x00002b81453ebb05 in waitpid () from /lib/libc.so.6
(gdb) cont
Continuing.
Program received signal SIGSEGV, Segmentation fault.
0x0000000000402903 in ?? ()
(gdb) info reg
rax 0x0 0
...
(gdb) x/5i $pc
0x402903 <_IO_putc@plt+3123>: mov (%rax),%r9

** Changed in: shadow (Ubuntu)
   Importance: Undecided => Low
       Status: New => Confirmed

** Visibility changed to: Public

** This bug is no longer flagged as a security issue

--
newgrp segfaults on exit when default group isn't in /etc/groups
https://bugs.launchpad.net/bugs/130205
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