Document ID: 59664
Last Updated 2003 October 4
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To: BugTraq Subject: Re: Cisco 6509 switch telnet vulnerability Date: Oct 4 2003 1:11AM Author: Wendy Garvin <firstname.lastname@example.org> Message-ID: <20031004011131.GA1361@cisco.com> In-Reply-To: <email@example.com> -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Chris, This is a known bug, and we were able to reproduce the behavior you reported, however the commands cannot actually be executed. As you demonstrated, you can get the 'help' text for non-enable commands at the password prompt, but the command is not completed, all that is returned is an error message. These commands are publicly available: http://www.cisco.com/univercd/cc/td/doc/product/lan/cat6000/sw_5_5/cmd_refr/cli.htm This bug cannot be used to gain control of the switch, gather further information about the device or gather details about the traffic it carries. It is documented as CSCdr87435, and it is fixed in 5.5(3) and later, and 6.1(1) and later. Details about the problem can be found on our website if you are a registered user: http://www.cisco.com/pcgi-bin/Support/Bugtool/onebug.pl?bugid=CSCdr87435 Thank you for your work on this problem. As always, working with the Cisco PSIRT team is the best way to verify the accuracy of information before posting it publicly. - ---Wendy > Chris Norton <kicktd hotmail com> [2003-10-03 16:24] 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. > > [ ----- End of Included Message ----- ] - --- Wendy Garvin - Cisco PSIRT - 408 525-1888 CCIE# 6526 - ----------------------------------------------------- http://www.cisco.com/go/psirt -----BEGIN PGP SIGNATURE----- Version: PGP 6.5.2 iQA/AwUBP34brc/6vhuARK9tEQICAgCgj7ghQcOp0poO7TPsRyHEI+oe50MAoOBo BHjtXy3ob12Ss7bouy3JpARY =RIWI -----END PGP SIGNATURE-----
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|Updated: Oct 08, 2004||Document ID: 59664|