[31976] in bugtraq
Re: Cisco 6509 switch telnet vulnerability
daemon@ATHENA.MIT.EDU (Bob Niederman)
Sat Oct 4 16:36:20 2003
Date: Sat, 4 Oct 2003 00:55:11 -0500 (CDT)
From: Bob Niederman <btrq@bob-n.com>
To: bugtraq@securityfocus.com
In-Reply-To: <20031003000326.4614.qmail@sf-www2-symnsj.securityfocus.com>
Message-ID: <Pine.LNX.4.10.10310032350050.1296-100000@bob-n.com>
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While this is clearly a bug, the example given does not show that it's
serious. The example (and the statement "...as long as they are followed
by a space and a ?") shows that you have gotten the syntax for the next
parameter of the command, not that you have executed it.
---
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On 3 Oct 2003, Chris Norton wrote:
>
>
> A vulnerability has been found on Cisco 6509 switches. The
> vulnerability was found to work on 2 different Cisco 6509 switches
> running CATOS 5.4(2) and 5.5(2). The vulnerability can lead to
> information and commands being exectued on the remote switch from the
> login prompt. Commands can be exectued at the Enter password: prompt
> as long as they are followed by a space and a ? Proof of concept
> below: Cisco Systems Console
>
> Enter password:
> <data_size> Size of the packet (0..1420)
> <cr>
> Enter password: traceroute 127.0.0.1
>
> This vulnerability has yet to be confirmed by Cisco but they have been alerted about it.
>
