Vulnerability Development: Re: UUCP

[Iván Arce <core.lists.exploit-dev () core-sdi com>]

dunno if its the same thing, OpenBSD's changelog shows a
security fix for uuxqt parsing of command line  arguments
on Sept. 11, 2001:

http://www.openbsd.org/errata29.html#uucp


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CORE Security Technologies
Iván Arce
Co-Founder and CTO
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----- Original Message -----
From: Izik <core.lists.exploit-dev () core-sdi com>
Newsgroups: core.lists.exploit-dev
To: <vuln-dev () securityfocus com>
Sent: Thursday, November 29, 2001 9:13 AM
Subject: UUCP


> Hello
>
> i've found buffer overflow in uucp. in BSDi platform's
> right now i've checked that on:
>
> BSDI BSD/OS 4.0.1 Kernel #1: Thu Jun 10 15:24:57 PDT 1999
> BSDI BSD/OS 3.0 Kernel #0: Thu Jan 30 13:02:43 MST 1997
>
> versions that seems to be vuln are:
>
> Version: uucp_args.c,v 2.1 1995/02/03 13:22:07 polk Exp
> "BSD/OS 4.0 98/06/11"
>
> Version: uucp_args.c,v 2.1 1995/02/03 13:22:07 polk Exp
> "BSD/OS 3.0 97/01/17"
>
> buffer overflow is based on command line argv. for ex:
>
> /usr/bin/uucp `perl -e 'print "A" x 900'` `perl -e 'print "A" x 900'`
> `perl -e 'print "A" x 356'`
>
> the ret addr is totaly writable, and it's marked as 352 - 354.
> in the thrid buffer (from left to right).
>
> since uucp is by nature suid. and the ownership is by uucp
> i don't see the real profit. what does bother me is that uucp
> also got a daemon ...
>
> Singed.
> izik @ http://www.tty64.org

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