CVE

Id
452  
CVE No.
CVE-1999-0453  
Status
Candidate  
Description
An attacker can identify a CISCO device by sending a SYN packet to port 1999, which is for the Cisco Discovery Protocol (CDP).  
Phase
Modified (20040512-02)  
Votes
ACCEPT(2) Baker, Balinsky | MODIFY(1) Frech | NOOP(2) Northcutt, Wall | REVIEWING(1) Christey  
Comments
Frech> XF:cisco-ident(2289) | ADDREF BUGTRAQ:19990118 Remote Cisco Identification | In description, probably better to use "Cisco" as product/company name. | Balinsky> CiscoSecure IDS has a signature for this...ID 3602 Cisco IOS Identity. | Christey> There may be a slight abstraction problem here, e.g. look | at the candidate for queso/nmap; also see followup Bugtraq post | from "Basement Research" on 19990120 which says that there are | many other features in Cisco products that allow remote | identification. | Christey> fix typo: "Dicsovery"