Vulnerability Name:

CVE-1999-0453 (CCN-2289)

Summary:An attacker can identify a CISCO device by sending a SYN packet to port 1999, which is for the Cisco Discovery Protocol (CDP).
Please see the following link for more information:
CVSS v3 Severity:10.0 Critical (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): None
10.0 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-200
Vulnerability Consequences:Obtain Information
References:Source: CCN
Type: BugTraq Mailing List, Mon, 18 Jan 1999 09:48:52 PST
Remote Cisco Identification

Source: CCN
Type: BugTraq Mailing List, Mon, 18 Jan 1999 13:40:23 -0800
Re: Remote Cisco Identification (fwd)

Source: MITRE
Type: CNA

Source: CCN
Type: OSVDB ID: 6014
Cisco Discovery Protocol Remote Device Identification

Source: XF

Vulnerable Configuration:Configuration 1:
  • cpe:/h:cisco:router:*:*:*:*:*:*:*:*

  • Configuration CCN 1:
  • cpe:/h:cisco:router:*:*:*:*:*:*:*:*

  • * Denotes that component is vulnerable
    cisco router *
    cisco router *